From: Subject: =?windows-1250?Q?FYZIK=C1LN=CD_OLYMPI=C1DA_::_Kategorie_E=2C_F?= Date: Mon, 19 Oct 2009 09:48:23 +0200 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_0000_01CA50A1.4C5B77A0" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CA50A1.4C5B77A0 Content-Type: text/html; charset="windows-1250" Content-Transfer-Encoding: quoted-printable Content-Location: http://fo.cuni.cz/index.php?file=8&who=student FYZIK=C1LN=CD = OLYMPI=C1DA :: Kategorie E, F
=20 Hledat =
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Zah=E1jen=ED 51. ro=E8n=EDku

20. srpna 2009 =97 = V=E1=9Een=ED organiz=E1to=F8i=20 p=F8edm=ECtov=E9 sout=EC=9Ee Fyzik=E1ln=ED olympi=E1da, = v=E1=9Een=ED vyu=E8uj=EDc=ED fyziky na=20 z=E1kladn=EDch a na st=F8edn=EDch =9Akol=E1ch, =9E=E1ci = a =9E=E1kyn=EC z=E1kladn=EDch=20 a st=F8edn=EDch V=EDce= ...

Zpr=E1va z mezin=E1rodn=ED fyzik=E1ln=ED = olympi=E1dy

11. srpna 2009 =97 P=F8e=E8t=ECte si = zpr=E1vu o =FA=E8asti=20 na=9A=ED delagace na 40. mezin=E1rodn=ED fyzik=E1ln=ED olympi=E1d=EC. V=EDce= ...

 

Kategorie E, F 51. ro=E8n=EDku FO

Organizace

Kategorie E ur=E8ena =9E=E1k=F9m 9. t=F8=EDd, kategorie F ur=E8ena = =9E=E1k=F9m 8. t=F8=EDd z=E1kladn=EDch=20 =9Akol a jim v=ECkov=EC odpov=EDdaj=EDc=EDm =9E=E1k=F9m t=F8=EDd = ni=9E=9A=EDho gymn=E1zia.

V prvn=EDm (dom=E1c=EDm) kole m=E1te za =FAkol = vy=F8e=9Ait sedm =FAloh.=20 =D8e=9Aen=ED odevzdejte sv=E9mu u=E8iteli fyziky v t=ECchto term=EDnech: = =FAlohu prvn=ED a=9E t=F8et=ED=20 zpravidla do konce listopadu, =FAlohu =E8tvrtou a=9E sedmou nejpozd=ECji = do 15.=20 3. 2010, kdy kon=E8=ED prvn=ED kolo sout=EC=9Ee. =D8e=9Aen=ED = =FAloh oprav=ED v=E1=9A u=E8itel=20 fyziky. Pro ka=9Edou =FAlohu je stanoveno 10 bod=F9. Pln=FD po=E8et = bod=F9 dost=E1v=E1 =F8e=9Aitel,=20 jestli=9Ee je =FAloha =F8e=9Aena zcela bez chyb. =D8e=9Aen=ED je = nevyhovuj=EDc=ED, chyb=ED-li slovn=ED=20 v=FDklad, nebo je-li ne=FApln=FD, tak=9Ee z n=ECho nelze vyvodit = my=9Alenkov=FD postup=20 podan=E9ho =F8e=9Aen=ED.

=DAsp=EC=9An=FD =F8e=9Aitel prvn=EDho kola jste v p=F8=EDpad=EC, =9Ee = dostanete v p=ECti =FAloh=E1ch=20 alespo=F2 5 bod=F9 a vy=F8e=9A=EDte experiment=E1ln=ED =FAlohu. = Pozv=E1n=ED do druh=E9ho kola sout=EC=9Ee,=20 ve kter=E9m se dozv=EDte o m=EDst=EC a =E8asu kon=E1n=ED, dostanete od = sv=E9ho u=E8itele.

Druh=E9 (okresn=ED) kolo se uskute=E8n=ED = v term=EDnu=20 st=F8eda 31. 3. 2010. Ve druh=E9m kole je va=9A=EDm = =FAkolem vy=F8e=9Ait=20 =E8ty=F8i teoretick=E9 =FAlohy. =DAsp=EC=9An=FDm =F8e=9Aitelem druh=E9ho = kola, kde se tak=E9 boduje=20 jedna =FAloha 10ti body, se stanete, pokud vy=F8e=9A=EDte alespo=F2 = dv=EC =FAlohy s bodov=FDm=20 hodnocen=EDm alespo=F2 5 bod=F9 a dos=E1hnete p=F8itom nejmen=9A=EDho = po=E8tu celkem 14 bod=F9.=20 V=9Aichni =FAsp=EC=9An=ED =F8e=9Aitel=E9 dostanete pochvaln=E9 = uzn=E1n=ED, nejlep=9A=ED =F8e=9Aitel=E9 budou=20 odm=ECn=ECni.

V term=EDnu =E8tvrtek 29. 4. 2010 budou = uspo=F8=E1d=E1na=20 t=F8et=ED (krajsk=E1) kola sout=EC=9Ee v kategorii E, a = to ve vybran=FDch=20 m=EDstech. Do t=F8et=EDho kola jsou vybr=E1ni nejlep=9A=ED = =FA=E8astn=EDci druh=E9ho kola. Pozv=E1n=ED=20 do t=F8et=EDho kola dostanete od sv=E9ho u=E8itele. V=9Aichni = =FAsp=EC=9An=ED =F8e=9Aitel=E9 t=F8et=EDho=20 kola obdr=9E=EDte pochvaln=E1 uzn=E1n=ED a nejlep=9A=ED = sout=EC=9E=EDc=ED budou odm=ECn=ECni.

Po ukon=E8en=ED ka=9Ed=E9ho kola budete sezn=E1meni se spr=E1vn=FDm = =F8e=9Aen=EDm =FAloh, bu=EFto od=20 sv=E9ho u=E8itele fyziky, nebo ho najdte na t=ECchto str=E1nk=E1ch. = Ka=9Ed=E1 krajsk=E1 komise=20 z=F8izuje svou webovsko= u=20 str=E1nku, kde m=F9=9Eete naj=EDt dal=9A=ED informace = i v=FDsledky sout=EC=9Ee.

Pokyny pro sout=EC=9E=EDc=ED

=D8e=9Aen=ED pi=9Ate =FAhledn=EC a =E8iteln=EC na listy = form=E1tu A4. Ka=9Edou=20 =FAlohu vypracujte na samostatn=FD pap=EDr, pomocn=E9 = obr=E1zky a n=E1=E8rty=20 zhotovte tu=9Ekou. Jestli=9Ee pou=9E=EDv=E1te kalkula=E8ku, = nezapome=F2te na spr=E1vn=E9=20 zaokrouhlen=ED v=FDsledk=F9. Na prvn=ED list =F8e=9Aen=ED ka=9Ed=E9 = =FAlohy napi=9Ate z=E1hlav=ED podle=20 n=E1sleduj=EDc=EDho vzoru:

Jm=E9no=20 a p=F8=EDjmen=ED: Kategorie=20 E, F T=F8=EDda: =8Akoln=ED=20 rok: =8Akola: I.=20 kolo Vyu=E8=EDj=EDc=ED=20 fyziky: Posudek: Okres: Posuzovali: =DAloha=20 =E8.:

N=E1sleduje stru=E8n=FD z=E1znam textu =FAlohy, vysv=ECtlete = ozna=E8en=ED veli=E8in. Zapi=9Ate=20 podrobn=FD protokol o =F8e=9Aen=ED =FAlohy, dopln=ECn=FD o = p=F8=EDslu=9An=E9 obr=E1zky a n=E1=E8rtky.=20 Nezapome=F2te, =9Ee z protokolu mus=ED b=FDt jasn=FD my=9Alenkov=FD = postup p=F8i =F8e=9Aen=ED =FAlohy.=20

Na ka=9Ed=FD dal=9A=ED list napi=9Ate sv=E9 jm=E9no, p=F8=EDjmen=ED, = =9Akolu a =E8=EDslo =F8e=9Aen=E9 =FAlohy,=20 str=E1nku protokolu o =F8e=9Aen=ED. Texty =FAloh neopisujte, = vysv=ECtlete v=9Aak v=E1mi pou=9Eit=E9=20 ozna=E8en=ED a ud=EClejte stru=E8n=FD z=E1pis a legendu. Pou=9E=EDvejte = n=E1=E8rtky. =D8e=9Aen=ED =FAloh=20 doprov=E1zejte v=9Edy takov=FDm slovn=EDm v=FDkladem, aby ka=9Ed=FD, kdo = si va=9Ae =F8e=9Aen=ED=20 p=F8e=E8te, porozum=ECl va=9Aemu postupu =F8e=9Aen=ED. P=F8ipom=EDn=E1me = je=9At=EC jednou, =9Ee =F8e=9Aen=ED=20 =FAlohy bez v=FDkladu je hodnoceno jako nevyhovuj=EDc=ED. K ozna=E8en=ED = veli=E8in pou=9E=EDvejte=20 obvykl=E9 zna=E8ky, kter=E9 u=9E=EDv=E1te ve v=FDuce fyziky. Nau=E8te = se, =9Ee podat dobrou zpr=E1vu=20 o =F8e=9Aen=ED probl=E9mu je stejn=EC tak d=F9le=9Eit=E9 jako jeho = vy=F8e=9Aen=ED. Bude se v=E1m to=20 hodit v dal=9A=EDm studiu.

=DAlohy =F8e=9Ate pokud mo=9Eno nejprve obecn=EC, potom prove=EFte = =E8=EDseln=E9 =F8e=9Aen=ED.=20 Nezapom=EDnejte, =9Ee fyzik=E1ln=ED veli=E8iny jsou v=9Edy doprov=E1zeny = jednotkami, =9Ee ve=20 fyzice pracujeme =E8asto s nep=F8esn=FDmi =E8=EDsly a v=FDsledek je = t=F8eba zaokrouhlovat s=20 ohledem na po=E8et platn=FDch m=EDst dan=FDch veli=E8in. U zlomk=F9 = pi=9Ate vodorovnou=20 zlomkovou =E8=E1ru. P=F8i =F8e=9Aen=ED =FAloh se op=EDrejte = p=F8edev=9A=EDm o u=E8ebnice fyziky. V=E1=9A=20 u=E8itel fyziky v=E1m doporu=E8=ED i jin=E9 vhodn=E9 studijn=ED = pom=F9cky. K =FAsp=EC=9An=E9mu =E8=EDseln=E9mu=20 v=FDpo=E8tu pou=9E=EDvejte kalkul=E1tory; v=FDsledek v=9Aak = nezapome=F2te zaokrouhlit na rozumn=FD=20 po=E8et platn=FDch m=EDst. Nau=E8te se odhadovat v=FDsledek, co=9E v=E1m = pom=F9=9Ee p=F8i kontrole=20 va=9Aich v=FDpo=E8t=F9.

=DAlohy

Pro ob=EC kategorie E a F je zad=E1no spole=E8n=EC v=EDce =FAloh, z = nich=9E v=E1=9A u=E8itel=20 fyziky vybere a vyzna=E8=ED sedm =FAloh pro ka=9Edou kategorii podle = u=E8iva, kter=E9 bude=20 na va=9A=ED =9Akole probr=E1no do konce b=F8ezna. Pro vy=9A=9A=ED kola = sout=EC=9Ee (okresn=ED, krajsk=E9=20 kolo) jsme stanovili n=ECkter=E1 z=E1vazn=E1 t=E9mata.

Kategorie F:
Mechanika (pohyby, s=EDly, pr=E1ce, v=FDkon, energie)
Hydromechanika (statika a dynamika kapalin, aerostatika)
Termika (v=FDm=ECna tepla, teplo a pr=E1ce, zm=ECny = skupenstv=ED)
Optika (jen paprskov=E1 optika =96 geometrick=E9 = =F8e=9Aen=ED)
Kategorie E: (k v=FD=9Ae uveden=FDm z=E1vazn=FDm t=E9mat=F9m = p=F8ipoj=EDme)
Elekt=F8ina (kondenz=E1tory, stejnosm=ECrn=FD proud, obvody, = =FA=E8inky=20 proudu)

P=F8ejeme v=E1m, abyste p=F8i =F8e=9Aen=ED =FAloh fyzik=E1ln=ED = olympi=E1dy str=E1vili p=ECkn=E9=20 chv=EDle, aby v=E1s =FAlohy zaujaly, a t=EDm aby se prohloubil v=E1=9A = dobr=FD vztah k fyzice.=20 Fyzika je teoretick=FDm z=E1kladem techniky, kter=E1 je pro sou=E8asnou = spole=E8nost zcela=20 nepostradateln=E1. Fyzika je v=9Aak i sou=E8=E1st=ED lidsk=E9 kultury, a = proto by se m=ECl s=20 jej=EDmi v=FDsledky sezn=E1mit ka=9Ed=FD =E8lov=ECk a naj=EDt k n=ED = kladn=FD vztah.

Vloni byly poprv=E9 za=F8azeny =FAlohy, k jejich=9E =F8e=9Aen=ED byly = zapot=F8eb=ED po=E8=EDta=E8 a=20 Internet. Stejn=EC tak tomu bude i letos.

Zad=E1n=ED v=9Aech =FAloh dom=E1c=EDho kola si m=F9=9Eete st=E1hnout = ve form=E1tu=20 pdf. =D8e=9Aen=ED =FAloh dom=E1c=EDho kola zve=F8ejn=EDme = po term=EDnu odevzd=E1n=ED.=20 Zadan=ED a =F8e=9Aen=ED =FAloh okresn=EDho a krajsk=E9ho kola = zve=F8ejn=EDme a=9E po jeho=20 term=EDnu kon=E1n=ED.

Texty =FAloh dom=E1c=EDho kola

3D"PDF

Letos poprv=E9 p=F8edkl=E1d=E1me u=E8itel=F9m fyziky a z=E1jemc=F9m = z =F8ad =9E=E1k=F9 texty=20 =FAloh Fyzik=E1ln=ED olympi=E1dy, ilustrovan=E9 barevn=FDmi obr=E1zky. = Tento materi=E1l je=20 vhodn=FD pro upout=E1n=ED pozornosti budouc=EDch =F8e=9Aitel=F9 =FAloh = FO.

3DPDF=20

Zad=E1n=ED v=9Aech =FAloh dom=E1c=EDho kola si m=F9=9Eete rovn=EC=9E = st=E1hnout ve form=E1tu=20 pdf pro tisk:

Soubor =FAloh je ur=E8en pro sout=EC=9E=EDc=ED, kte=F8=ED = nav=9At=ECvuj=ED 8. nebo 9. ro=E8n=EDk =9Akol,=20 poskytuj=EDc=EDch z=E1kladn=ED vzd=ECl=E1n=ED, a jim odpov=EDdaj=EDc=ED = ro=E8n=EDky v=EDcelet=FDch gymn=E1zi=ED.=20 Budete povinn=EC =F8e=9Ait =FAlohy, kter=E9 v=E1m stanov=ED v=E1=9A = u=E8itel fyziky. Mezi probl=E9my=20 k =F8e=9Aen=ED jsme za=F8adili tak=E9 projekty, kter=E9 m=F9=9Eete = =F8e=9Ait. Samoz=F8ejm=EC,=20 m=F9=9Eete =F8e=9Ait i dal=9A=ED, pro v=E1s ji=9E nesout=EC=9En=ED = =FAlohy.

1. Na z=E1vodn=ED dr=E1ze
Na z=E1vodn=ED dr=E1ze sout=EC=9E=ED t=F8i cyklist=E9 na trase = 1200 m s letm=FDm=20 startem tak, =9Ee po cel=E9 trase udr=9Euj=ED st=E1lou velikost = rychlosti. P=F8i pr=F9jezdu=20 c=EDlem postupn=EC zpomaluj=ED tak, =9Ee jejich rychlost kles=E1 = line=E1rn=EC s =E8asem,=20 a=9E se kolo zastav=ED. Prvn=ED z=E1vodn=EDk Adam pot=E9, co projel = c=EDlem, zastavil za=20 40 s na dr=E1ze 240 m. Druh=FD z=E1vodn=EDk Bohumil pot=E9, = co projel c=EDlem,=20 zastavil za 50 s na dr=E1ze 375 m. T=F8et=ED z=E1vodn=EDk = Cyril pot=E9, co=20 projel c=EDlem, zastavil za 45 s na dr=E1ze 304 m.=20
  1. K =F8e=9Aen=ED si na=E8rtni graf rychlosti v z=E1vislosti = na =E8ase pot=E9, co=20 n=ECkter=FD ze z=E1vodn=EDk=F9 projel c=EDlem. Ur=E8i z grafu = velikost rychlosti=20 v0, kterou z=E1vodn=EDk projel c=EDlem.
  2. Kter=FD ze t=F8=ED z=E1vodn=EDk=F9 =96 Adam, Bohumil, = Cyril =96 byl=20 nejrychlej=9A=ED?
  3. Nakresli do jednoho obr=E1zku graf v(t) pro = v=9Aechny t=F8i=20 z=E1vodn=EDky pro trasu od startu z=E1vodu a=9E po m=EDsto jejich = zastaven=ED.=20
2. Automobil jede po d=E1lnici
Automobil jede po d=E1lnici st=E1lou rychlost=ED 126 km/h, = kdy=9E =F8idi=E8=20 zjist=ED ve velk=E9 vzd=E1lenosti hromadnou hav=E1rii. Nejprve uplyne = doba 1,2 s,=20 ne=9E za=E8ne automobil brzdit. Automobil zpomaluje tak, =9Ee za = ka=9Edou sekundu se=20 rychlost zmen=9A=ED o 5 m/s.=20
  1. Nakresli graf v(t) rychlosti v z=E1vislosti = na =E8ase u=20 tohoto pohybu.
  2. Jakou dr=E1hu uraz=ED automobil, ne=9E za=E8ne brzdit?
  3. Zjisti, za jak dlouho od zpozorov=E1n=ED hav=E1rie automobil = zastav=ED a na jak=E9=20 dr=E1ze.
  4. Jak se zm=ECn=ED v=FDsledky, pojede-li automobil st=E1lou = rychlost=ED=20 144 km/h, 108 km/h?
3. Listono=9A bal=EDkov=E9 slu=9Eby
Listono=9A bal=EDkov=E9 slu=9Eby m=E1 doru=E8it bal=EDk o = hmotnosti 12 kg do bytu=20 ve 14. poschod=ED a zdolat tak v=FD=9Akov=FD rozd=EDl 42 m. = Proto=9Ee se v=FDtah=20 opravuje, musel vystoupit po schodi=9Ati. Hmotnost listono=9Ae je = 88 kg.=20
  1. Jakou pr=E1ci je nutno vykonat pro doru=E8en=ED bal=EDku do bytu = ve=20 14. poschod=ED?
  2. Jakou celkovou pr=E1ci vykon=E1 listono=9A p=F8i osobn=EDm = doru=E8en=ED bal=EDku?
  3. Jak=E1 je u=9Eite=E8n=E1 pr=E1ce pro doru=E8en=ED bal=EDku? = Jak=E1 je pr=E1ce sice zbyte=E8n=E1,=20 ale nutn=E1 k doru=E8en=ED bal=EDku? Ur=E8i =FA=E8innost = doru=E8en=ED bal=EDku.=20
4. Nep=F8edstaviteln=EC zbyte=E8n=E1 ztr=E1ta
Na chat=EC zapomn=ECl jednou v ned=ECli ve=E8er p=F8i odjezdu = Petr vypnout=20 =9E=E1rovku ve stoln=ED lamp=EC, a tato =9E=E1rovka o p=F8=EDkonu = 40 W sv=EDtila a=9E do=20 p=E1tku do ve=E8era, kdy se na chatu rodina zase vr=E1tila. Lampa = sv=EDtila tedy=20 zbyte=E8n=EC cel=FDch 5 dn=ED.=20
  1. Jak=E1 je =84zbyte=E8n=E1=93 elektrick=E1 pr=E1ce p=F8i tomto = sv=EDcen=ED?
  2. Chlapec musel jako kompenzaci pro rodinu nah=E1zet 6 t = p=EDsku na=20 valn=EDk tak, =9Ee lopatou vyhazoval p=EDsek p=F8es bo=E8nici = valn=EDku. P=EDsek musel=20 zvednout lopatou ze zem=EC do v=FD=9Aky 2 m, hmotnost p=EDsku = na lopat=EC byla=20 4 kg. Ur=E8i, kolikr=E1t musel Petr p=EDsek na lopatu nabrat a = jakou pr=E1ci=20 vykonal.
  3. Porovnej oba v=FDsledky a zjisti, kolik p=EDsku by musel = Petr na valn=EDk=20 nalo=9Eit, aby vykonal stejnou pr=E1ci, jako byla =84zbyte=E8n=E1=93 = pr=E1ce elektrick=E1.=20
5. Motocykl se rozj=ED=9Ed=ED
P=F8i tr=E9ninku na motocyklov=FDch z=E1vodech se motocykl = rozj=ED=9Ed=ED rovnom=ECrn=EC=20 zrychlen=EC po dobu 25 s a=9E dos=E1hne rychlosti 180 km/h, = pot=E9 touto=20 rychlost=ED projede trasu 2500 m a v n=E1sleduj=EDc=ED = dob=EC 125 s=20 rovnom=ECrn=EC zpomaluje, a=9E zastav=ED p=F8esn=EC v m=EDst=EC = startu.=20
  1. Ur=E8i, jak=E1 doba uplynula od startu a=9E k =FApln=E9mu = zastaven=ED.
  2. Nakresli graf z=E1vislosti rychlosti na =E8ase = v(t).
  3. Jakou dr=E1hu urazil motocykl od startu a=9E k =FApln=E9mu = zastaven=ED?
  4. Ur=E8i pr=F9m=ECrnou rychlost motocyklu p=F8i pohybu. =
6. Oprav=E1=F8 =96 amat=E9r
Na chat=EC je star=FD va=F8i=E8, v n=ECm=9E je topn=E1 = =84spir=E1la=93, um=EDst=ECn=E1=20 v keramick=E9 form=EC. Va=F8i=E8 se p=F8ipoj=ED k nap=ECt=ED = 230 V=20 a spir=E1lou proch=E1z=ED elektrick=FD proud 3,5 A. Jednou = se v=9Aak spir=E1la=20 p=F8ep=E1lila a soused =96 oprav=E1=F8 amat=E9r od=9At=EDpl = desetinu d=E9lky spir=E1ly=20 a p=F8ipojil spir=E1lu zase ke kontakt=F9m va=F8i=E8e. Odpor = dr=E1tu z=E1vis=ED na d=E9lce=20 vodi=E8e p=F8=EDmo, na obsahu kolm=E9ho =F8ezu dr=E1tu nep=F8=EDmo = a z=E1vis=ED tak=E9 na=20 materi=E1lu vodi=E8e. Z=E1vislost odporu na teplot=EC nebudeme = uva=9Eovat.=20
  1. Napi=9A, jak=FD byl p=F9vodn=EC v=FDkon star=E9ho va=F8i=E8e a = jak se touto =FApravou=20 zm=ECnil.
  2. Jak se zm=ECnila doba, za n=ED=9E se d=E1 oh=F8=E1t 1 litr = vody na =E8aj na tomto=20 va=F8i=E8i? Po=E8=E1te=E8n=ED teplota vody 15=B0 C, koncov=E1 = 95=B0 C. Dal=9A=ED=20 pot=F8ebn=E9 =FAdaje jsou v tabulk=E1ch.
  3. K oh=F8=E1t=ED stejn=E9ho objemu vody na =E8aj varnou konvic=ED = s p=F8=EDkonem=20 2 000 W a =FA=E8innost=ED 85 % pot=F8ebujeme = pr=E1v=EC polovinu p=F9vodn=ED=20 doby. Jak=E1 je =FA=E8innost star=E9ho va=F8i=E8e?
7. =DAsporn=E9 z=E1=F8ivky
V dom=E1cnosti se pou=9E=EDv=E1 v lamp=EC =9E=E1rovka = o v=FDkonu 100 W a=20 nahrad=EDme ji =FAspornou z=E1=F8ivkou o p=F8ibli=9En=EC = stejn=E9m sv=ECteln=E9m v=FDkonu, ale=20 o p=F8=EDkonu jen 20 W.=20
  1. Jak=E9 jsou klady a jak=E9 jsou z=E1pory =FAsporn=FDch = z=E1=F8ivek?
  2. Jak=E9 d=F9sledky maj=ED tyto z=E1=F8ivky pro zm=ECny = =9Eivotn=EDho prost=F8ed=ED?
  3. V=EDte-li, =9Ee n=E1kupn=ED cena =FAsporn=E9 z=E1=F8ivky je = desetkr=E1t vy=9A=9A=ED ne=9E=20 ne=FAsporn=E9 =9E=E1rovky, pro=E8 a kdy je =E8i nen=ED = v=FDm=ECna ekonomick=E1?=20
8. Voda v baz=E9nu
Sportovn=ED plaveck=FD baz=E9n m=ECstsk=FDch l=E1zn=ED m=E1 = =9A=ED=F8ku 15 m a d=E9lku=20 50 m, hloubka vody na jednom konci baz=E9nu je 60 cm, dno = baz=E9nu se=20 zvolna sva=9Euje tak, =9Ee na druh=E9m konci hloubka vody dos=E1hne = 240 cm.=20 Veden=ED l=E1zn=ED se sna=9E=ED udr=9Eovat st=F8edn=ED teplotu vody = v baz=E9nu na hodnot=EC=20 22=B0 C, av=9Aak na p=F8=E1n=ED z=E1kazn=EDk=F9 se rozhodlo = zv=FD=9Ait komfort a upravit=20 tuto teplotu na 27=B0 C.=20
  1. Ur=E8i objem a hmotnost vody v baz=E9nu.
  2. Kolik tepla je t=F8eba dodat vod=EC v baz=E9nu, aby se = st=F8edn=ED teplota=20 vody zv=FD=9Aila na 27=B0 C?
  3. V=EDme-li, =9Ee b=EChem dvou hodin klesne teplota vody zpravidla = o=20 1,2=B0 C, jak=FD v=FDkon mus=ED m=EDt za=F8=EDzen=ED ur=E8en=E9 = k oh=F8evu vody, aby se=20 udr=9Eovala teplota 27=B0 C?
9. Na kolik n=E1s p=F8ijde povinn=E9 sv=EDcen=ED automobilu?
Podle platn=FDch p=F8edpis=F9 pro silni=E8n=ED provoz mus=ED = b=EChem j=EDzdy automobilu=20 sv=EDtit jeho p=F8edn=ED reflektory, ka=9Ed=FD se =9E=E1rovkou = 50 W, v zadn=ED =E8=E1sti=20 dv=EC koncov=E1 sv=ECtla a osv=ECtlen=ED st=E1tn=ED pozn=E1vac=ED = zna=E8ky, celkem=20 o v=FDkonu 30 W. P=F8edpokl=E1dejme, =9Ee b=EChem dne, za = p=F8ijateln=E9=20 viditelnosti, jezd=ED majitel b=EChem roku asi 300 dn=ED, = ka=9Ed=FD den 2 h=20 s rozsv=EDcen=FDmi sv=ECtly.=20
  1. Zjisti, o kolik se t=EDmto sv=EDcen=EDm zv=FD=9A=ED = pr=E1ce, ji=9E mus=ED vykonat=20 ro=E8n=EC motor automobilu.
  2. Jestli=9Ee dokonal=FDm sp=E1len=EDm 1 litru benz=EDnu = z=EDsk=E1me teplo=20 36 MJ, ale v motoru auta ho dok=E1=9Eeme vyu=9E=EDt jen na = 22 %, kolik=20 litr=F9 benz=EDnu uveden=FD automobil spot=F8ebuje ro=E8n=EC nav=EDc = proto, =9Ee majitel=20 p=F8esn=EC dodr=9Euje dopravn=ED p=F8edpisy?
  3. Jak=E9 jsou kladn=E9 a jak=E9 z=E1porn=E9 d=F9sledky tohoto = na=F8=EDzen=ED?
10. Dr=E1ty jako rezistory
Dr=E1t=ECn=FD =E8tverec ABCD o d=E9lce strany 100 cm, = odpor ka=9Ed=E9 strany=20 je 12 Ω, m=E1 dr=E1t=ECnou =FAhlop=F8=ED=E8ku AC, jej=ED=9E = odpor je 18 Ω. Tento=20 =84odporov=FD=93 =E8tverec zapoj=EDme t=F8emi mo=9En=FDmi zp=F9soby ke = zdroji o nap=ECt=ED=20 3,0 V (zdroj p=F8ipoj=EDme k bod=F9m A-B, A-C, A-D).=20
  1. Nakresli re=E1lnou situaci (ve zmen=9Aen=ED) a jej=ED = elektrick=E9 sch=E9ma.
  2. Jak velk=FD je v=FDsledn=FD odpor ve v=9Aech t=F8ech = zapojen=EDch?
  3. Jak=FD proud proch=E1z=ED vodi=E8i p=F8i jednotliv=FDch = zapojen=EDch?
11. Elektr=E1rna Prun=E9=F8ov
Elektr=E1rna Prun=E9=F8ov (EPRU) pat=F8=ED mezi t=ECch n=ECkolik = tepeln=FDch elektr=E1ren=20 Evropsk=E9 unie, kter=E9 nejv=EDce zat=EC=9Euj=ED =9Eivotn=ED = prost=F8ed=ED. Konkr=E9tn=EC jde o=20 produkci 1,07 Mt oxidu uhli=E8it=E9ho na ka=9Edou vyrobenou TWh. = V p=F9vodn=ED=20 =E8=E1sti (EPRUI) jsou instalov=E1na turbosoustroj=ED = o celkov=E9m v=FDkonu=20 440 MW, v p=F8=EDstavb=EC EPRUII je p=ECt agreg=E1t=F9, = ka=9Ed=FD o v=FDkonu=20 210 MW. Sou=E8initel ro=E8n=EDho vyu=9Eit=ED se po=E8=EDt=E1 = u tepeln=FDch elektr=E1ren=20 55 %, rok obsahuje 8766 h.=20
  1. Ur=E8i elektrickou pr=E1ci, kter=E1 je pro spot=F8ebitele = k dispozici za=20 jeden rok.
  2. Jak=E1 je ro=E8n=ED produkce oxidu uhli=E8it=E9ho = u tepeln=E9 elektr=E1rny=20 Prun=E9=F8ov?
  3. Ur=E8ete denn=ED (ro=E8n=ED) spot=F8ebu hn=ECd=E9ho uhl=ED = v t=E9to tepeln=E9=20 elektr=E1rn=EC, je-li jeho v=FDh=F8evnost 12 MJ/kg = a =FA=E8innost elektr=E1rny=20 je 35 %.
  4. Nejv=ECt=9A=ED tepeln=E1 elektr=E1rna v Polsku je = v bl=EDzkosti m=ECsta=20 Belchat=F3w, kter=E1 m=E1 instalovan=FD v=FDkon 4 400 MW, = ro=E8n=EC poskytuje=20 asi 28 TWh a um=EDstila se na p=F8edn=EDm m=EDst=EC = v produkci oxidu=20 uhli=E8it=E9ho hodnotou 1,09 Mt na vyrobenou TWh. Kolik dn=ED = je tato=20 elektr=E1rna v provozu?
  5. Porovnej odpov=ECdi na ot=E1zky a), b), c) pro polskou a = =E8eskou elektr=E1rnu.=20
12. Tandemov=FD seskok pad=E1kem
Seskoky pad=E1kem pat=F8=ED mezi adrenalinov=E9 sporty. = V=FDsadk=E1=F8 pad=E1 za bezv=ECt=F8=ED=20 svisle dol=F9 a proti jeho pohybu p=F9sob=ED odporov=E1 s=EDla, = vznikaj=EDc=ED pohybem=20 ve vzduchu. Velikost odporov=E9 s=EDly ur=E8=EDme ze vztahu = F =3D ½CSρv², = kde zvol=EDme tvarov=FD=20 odporov=FD sou=E8initel pro dutou polokouli=20 C =3D 1,33, hustotu vzduchu=20 ρ =3D 1,20 kg/m³, vodorovn=FD =F8ez = kruhov=FDm pad=E1kem=20 S =3D 50 m². Potom p=F8ep=ED=9Aeme vztah = pro velikost celkov=E9=20 odporov=E9 s=EDly jako F =3D kv². V=EDme, = =9Ee hmotnost pad=E1ku=20 je 15 kg, hmotnost v=FDsadk=E1=F8e 75 kg a hmotnost = v=FDsadk=E1=F8ky 65 kg.=20
  1. Jak velk=E1 s=EDla p=F9sob=ED na v=FDsadk=E1=F8e =E8i = v=FDsadk=E1=F8ku p=F8i p=E1du=20 s otev=F8en=FDm pad=E1kem?
  2. Jak velk=E9 rychlosti pohybu m=F9=9Ee v=FDsadk=E1=F8 =E8i = v=FDsadk=E1=F8ka dos=E1hnout?
  3. P=F8i tandemov=E9mu seskoku jsou na jednom pad=E1ku zav=EC=9Aeni = v=FDsadk=E1=F8=20 i v=FDsadk=E1=F8ka spole=E8n=EC. Jak se zm=ECn=ED rychlost = p=E1du pohybuj=EDc=ED se=20 soustavy?
  4. V technick=E9 dokumentaci pad=E1k=F9 je uvedeno, =9Ee p=F8i = zat=ED=9Een=ED pad=E1ku=20 100 kg dosahuje padaj=EDc=ED t=ECleso rychlosti 5,3 m/s. = Porovnej=20 teoretick=E9 =FAdaje s vypo=E8ten=FDmi hodnotami. =
13. Autobusov=E1 posila
Pravideln=EC ka=9Ed=FD den vyj=ED=9Ed=ED linkov=FD autobus ze = stanice Po=E8=E1te=E8n=ED ve=20 14:15 h a doraz=ED do stanice Kone=E8n=E1 ve vzd=E1lenosti = 98 km=20 v 15:50 h. Na trase je jen jedin=E1 zast=E1vka, kde autobus = stoj=ED p=F8esn=EC=20 5,0 min. V p=E1tek odpoledne je v=9Edy p=F8istaven = tzv. posilov=FD v=F9z,=20 kter=FD ze stanice Po=E8=E1te=E8n=ED vyj=ED=9Ed=ED = ve 14:30 h a do c=EDlov=E9 stanice=20 Kone=E8n=E1 doraz=ED v 15:45 h. J=EDzda posilov=E9ho vozu je = koordinov=E1na tak,=20 =9Ee doraz=ED do stanice, kde zastavuje prvn=ED autobus, p=F8esn=EC ve = stejn=E9m okam=9Eiku=20 a vyj=ED=9Ed=ED t=E9=9E p=F8esn=EC jako autobus prvn=ED. Pro = jednoduchost p=F8edpokl=E1dejme, =9Ee=20 celou dobu mohou autobusy jet st=E1lou rychlost=ED, kter=E1 je rovna = jejich=20 rychlosti pr=F9m=ECrn=E9.=20
  1. Ur=E8i pr=F9m=ECrnou rychlost, kterou jel prvn=ED autobus.
  2. Ur=E8i pr=F9m=ECrnou rychlost, kterou jel druh=FD autobus.
  3. Ur=E8i, jak daleko je jedin=E1 zast=E1vka od stanice = Po=E8=E1te=E8n=ED a v kolik tam=20 autobusy doraz=ED.
  4. Jak daleko zb=FDv=E1 autobus=F9m do c=EDle trasy? =
14. Tak dlouh=FD =F8et=ECzec?
Z chemie v=EDme, =9Ee jeden mol obsahuje = 6,0=B71023 =E8=E1stic,=20 1 mol vody H2O m=E1 hmotnost 18,0 g.=20
  1. Ur=E8i, jak=FD objem p=F8ipad=E1 na jednu molekulu vody.
  2. Odhadni line=E1rn=ED rozm=ECry molekuly vody. Sv=F9j postup = vysv=ECtli.
  3. Jak dlouh=FD =F8et=ECzec bychom z=EDskali, kdyby se v=9Aechny = molekuly=20 v jednom molu postavily =84do z=E1stupu=93? V=FDsledek porovnej = s n=ECkterou=20 obecn=EC zn=E1mou vzd=E1lenost=ED.
  4. Jak dlouh=FD =F8et=ECzec bychom z=EDskali, kdyby v=9Aechny = molekuly v jednom=20 molu vytvo=F8ily =84tis=EDcistup=93?
15. Lond=FDnsk=E9 kolo
Koncem minul=E9ho stolet=ED, p=F8esn=EC = 31. prosince 1999 byl ofici=E1ln=EC=20 zah=E1jen provoz lond=FDnsk=E9 z=E1bavn=ED atrakce The London Eye =E8i = Millenium Wheel; u=20 n=E1s m=E1 v=9Eit=FD n=E1zev =84rusk=E9 kolo=93. Bylo postaveno na = b=F8ehu Tem=9Ee a dosahuje=20 v=FD=9Aky 135 m (443 stop). Dal=9A=ED zn=E1m=E1 rusk=E1 kola = jsou postavena na=20 n=ECkolika m=EDstech sv=ECta: Star of Nancheng =96 160 m = (525 stop),=20 Singapore Flyer =96 165 m (541 stop). Great Berlin = Wheel =96=20 175 m (570 stop) m=E1 b=FDt uvedeno do provozu = v roce 2010,=20 ale ji=9E v roce 2009 m=E1 b=FDt nejvy=9A=9A=EDm kolem = Beijing Great Wheel,=20 kter=E9 m=E1 dosahovat a=9E do v=FD=9Ae 208 m = (682 stop).
Lond=FDnsk=E9 kolo m=E1=20 celkem 32 vej=E8it=FDch kabinek, ka=9Ed=E1 pro 25 osob. Je = jasn=E9, =9Ee p=F8i=20 postupn=E9m vystupov=E1n=ED a nastupov=E1n=ED lid=ED = z kabinek (po=E8=EDtejme na=20 ka=9Edou zast=E1vku pouze 1 min) by se kolo muselo neust=E1le = rozj=ED=9Ed=ECt=20 a zastavovat, co=9E by znamenalo zna=E8n=E9 energetick=E9 = i =E8asov=E9 ztr=E1ty.=20 Proto se kolo ot=E1=E8=ED neust=E1le malou rychlost=ED, aby = n=E1v=9At=ECvn=EDci stihli vystoupit=20 i nastoupit za j=EDzdy; kolo se oto=E8=ED o 360=B0 jednou za = 30 min.=20
  1. Vypo=E8ti rychlost pohybu kabinky a posu=EF, zda je p=F8i = t=E9to rychlosti=20 opravdu mo=9En=E9, aby v doln=ED poloze lid=E9 vystupovali = a nastupovali.=20
  2. Jestli=9Ee z=EDskan=E1 rychlost p=F8edstavuje podm=EDnku = bezpe=E8n=E9ho provozu, jak=20 dlouho trv=E1 pobyt n=E1v=9At=ECvn=EDka na dal=9A=EDch = vyjmenovan=FDch atrakc=EDch?
  3. Uveden=E9 atrakce jsou um=EDst=ECny v rovinat=E9 krajin=EC, = v p=F8=EDpadu=20 Singapore Flyer dokonce nedaleko mo=F8e. Odhadni vzd=E1lenost, do = kter=E9 vid=ED=20 n=E1v=9At=ECvn=EDk v okam=9Eiku, kdy je na vrcholu kola.
  4. V=9Aechny uveden=E9 atrakce najdi na wikipedii. Pokus se tak=E9 = naj=EDt m=EDsta,=20 kde jsou um=EDst=ECny, a to v atlase nebo na Google Earth 3D. =
Pozn=E1mka:=20 Z =E8esk=E9ho pohledu m=F9=9Ee b=FDt zaj=EDmav=E9, =9Ee lit=E9 = ocelov=E9 =E8=E1sti kola=20 v Lond=FDn=EC, jako jsou hlavn=ED h=F8=EDdel, jej=ED z=E1v=ECsy = a klouby konstrukce,=20 byly vyrobeny =E8eskou firmou =8Akoda.
16. Sport a fyzika (projekt)
Sportovn=ED a t=EClov=FDchovn=E9 =E8innosti jsou t=ECsn=EC spjaty = s fyzikou =96=20 v ciz=EDch jazyc=EDch se n=ECkdy t=EClesn=E9 v=FDchov=EC = =F8=EDk=E1 Physical training,=20 Educazione fisica, Educaci=F3n fisica. Sportem =9Eije mnoho lid=ED, = ale sou=E8asn=EC=20 nemaj=ED r=E1di =9Akoln=ED vyu=E8ovac=ED p=F8edm=ECt Fyzika. Va=9A=EDm = =FAkolem bude vybrat si=20 n=ECkterou sportovn=ED =E8innost a podle sv=FDch = mo=9Enost=ED =96 informac=ED=20 i sv=E9ho p=F8edchoz=EDho matematick=E9ho a fyzik=E1ln=EDho = vzd=ECl=E1n=ED =96 sestavit=20 alespo=F2 p=ECt (l=E9pe deset) sportovn=EDch situac=ED, kter=E9 = dovedete p=F8esn=EC popsat,=20 vytvo=F8it k nim vhodn=FD zjednodu=9Aen=FD model = a vy=F8e=9Ait probl=E9m, kter=FD=20 jste si vybrali. Sv=E9 =F8e=9Aen=ED podrobn=EC popi=9Ate (formulujte = text a va=9Ae =F8e=9Aen=ED),=20 dopl=F2te obr=E1zky, fotografiemi, grafy aj.
17. Experiment=E1ln=ED =FAloha
Experiment=E1ln=ED =FAloha pro sout=EC=9E=EDc=ED = v kategori=EDch E a F je=20 v leto=9An=EDm ro=E8n=EDku spole=E8n=E1 = s kategori=ED G =96 Arc= him=E9di=E1da=20 a t=FDk=E1 se ur=E8ov=E1n=ED plo=9An=E9ho obsahu metodou = v=E1=9Een=ED tenk=FDch desek v=9Aude=20 t=E9=9Ee tlou=9A=9Dky.

Se=9Ee=F2 si tu=9E=9A=ED pap=EDr z krabice nebo z  = kalend=E1=F8e (ob=E9 bude nutno=20 p=F8i pokusech zni=E8it). D=E1le bude=9A pot=F8ebovat n=F9=9Eky, = =9Apendl=EDk nebo jehlu, re=9Enou=20 nebo jinou pevn=ECj=9A=ED nit, =9Apejle nebo tenkou ty=E8ku. Nejprve = si vyrob=ED=9A citliv=E9=20 v=E1=9Eky tak, =9Ee uv=E1=9Ee=9A na nit =9Apejli p=F8esn=EC = uprost=F8ed. Pak vyst=F8ihne=9A=20 z tu=9E=9A=EDho pap=EDru dva =E8tverce o rozm=ECrech=20 10 cm =D7 10 cm, pobl=ED=9E vrcholu prop=EDchne=9A = pap=EDr =9Apendl=EDkem=20 a uv=E1=9Ee=9A nit se smy=E8kou na opa=E8n=E9m konci nit=EC tak, = aby bylo mo=9Eno=20 zav=EC=9Aovat pap=EDrov=E1 t=ECl=EDska na =9Apejli (obdobn=EC to = provede=9A i s dal=9A=EDmi=20 t=EClesy). Citliv=E9 v=E1=9Eky pak vyzkou=9Aej: Na ka=9Edou stranu = =9Apejle um=EDst=ED=9A=20 vyst=F8ihnut=FD =E8tverec; pokud jsou vzd=E1lenosti um=EDst=ECn=ED na = =9Apejli od osy v=E1=9Eek=20 stejn=E9, m=F9=9Ee=9A pokra=E8ovat. Vyst=F8ihne=9A z t=E9ho=9E = pap=EDru lichob=EC=9En=EDk,=20 obd=E9ln=EDk, troj=FAheln=EDk (p=F8ibli=9En=EC stejn=EC velik=E9), = kruh (o polom=ECru asi=20 5 cm), t=F8eba i p=F9lkruh o polom=ECru 10 cm. = Prop=EDchnut=EDm na=20 vhodn=E9m m=EDst=EC a u=9Eit=EDm niti p=F8iprav=ED=9A z=E1v=ECsy. = Potom zav=ECs=ED=9A =E8tverec=20 o plo=9An=E9m obsahu = 1 dm² =3D 100 cm² a vyst=F8ihnut=FD=20 tvar na =9Apejle tak, =9Ee vznikne rovnov=E1ha p=F9sob=EDc=EDch sil. = Odtud zjist=ED=9A plo=9An=FD=20 obsah obrazce.

O sv=E9m v=FDsledku se p=F8esv=ECd=E8=ED=9A = v=FDpo=E8tem plo=9An=E9ho obsahu=20 podle zn=E1m=FDch vzorc=F9. Zaj=EDmav=E9 v=FDsledky z=EDsk=E1=9A = porovn=E1n=EDm obsahu kruhu=20 a =E8tverce (m=ECl bys z=EDskat n=ECjak=FD n=E1sobek = =E8=EDsla π, kter=E9=20 najde=9A v tabulk=E1ch nebo na sv=E9 kalkula=E8ce). M=F9=9Ee=9A = v=9Aak ur=E8it plo=9An=FD obsah=20 i =FAtvar=F9 nepravideln=FDch, kter=E9 p=F8ekresl=ED=9A na = v=FDchoz=ED pap=EDr, nap=F8. list=20 javoru, l=EDpy aj. Zkus tak=E9 zjistit plo=9An=FD obsah =FAtvaru, = kter=FD z=EDsk=E1=9A=20 obkreslen=EDm obrysu =C8esk=E9 republiky (pro=E8 mus=ED=9A zn=E1t = m=EC=F8=EDtko mapy?).=20

N=ECkolik rad, jak =F8e=9Ait fyzik=E1ln=ED =FAlohy

  1. Pe=E8liv=EC si prostuduj text =FAlohy a sna=9E se pochopit = v=9Aechny jeho=20 =E8=E1sti. Velmi d=F9le=9Eit=E9 je pochopit, o jak=E9m probl=E9mu se = v =FAloze=20 jedn=E1.
  2. Ozna=E8 fyzik=E1ln=ED veli=E8iny tak, jak jsi zvykl=E1(=FD) = z v=FDuky fyziky,=20 hodnoty si p=F8eve=EF do mezin=E1rodn=ED soustavy jednotek.
  3. Nezapome=F2 si nakreslit situa=E8n=ED n=E1=E8rtek, pom=F9=9Ee ti = orientovat se=20 v probl=E9mu.
  4. Prove=EF fyzik=E1ln=ED anal=FDzu situace =96 vytvo=F8 si = zjednodu=9Auj=EDc=ED modely=20 a vyberte vztahy, o nich=9E p=F8edpokl=E1=9A, =9Ee je = pou=9Eije=9A p=F8i =F8e=9Aen=ED.=20 Vytvo=F8te si pl=E1n =F8e=9Aen=ED.
  5. =DAlohu =F8e=9A nejprve obecn=EC, tj. nedosazuj za p=EDsmena = dan=E9 hodnoty =96=20 pom=F9=9Ee ti to =E8asto dostat se rychleji k c=EDli = a =F8e=9A=ED=9A sou=E8asn=EC=20 v=9Aechny podobn=E9 =FAlohy. Tak dostane=9A z=E1v=ECre=E8n=FD vztah, = kde na lev=E9 stran=EC m=E1=9A=20 hledanou veli=E8inu a napravo m=E1=9A veli=E8iny, jejich=9E = hodnoty zn=E1=9A=20 z textu =FAlohy nebo je um=ED=9A zjistit.
  6. Dosa=EF do vztahu m=EDsto hodnot veli=E8in pouze jejich jednotky = a prove=EF=20 tak tzv. jednotkovou kontrolu. Vyjde-li ti spr=E1vn=E1 jednotka = v=FDsledku, m=E1=9A=20 velkou nad=ECji, =9Ee dan=FD vztah je spr=E1vn=FD.
  7. Dosa=EF hodnoty veli=E8in a zn=E1m=E9 konstanty, pou=9Eij = kalkul=E1tor=20 a sna=9E se pokud mo=9Eno ekonomicky dostat k hodnot=EC = v=FDsledku.=20 Nezapome=F2 na stanoven=ED hledan=E9ho v=FDsledku = s p=F8ijateln=FDm po=E8tem platn=FDch=20 =E8=EDslic =96 neopisuj tedy v=FDsledek z kalkul=E1toru.
  8. Pro kontrolu pou=9Eij n=ECkter=E9 z grafick=FDch metod = (n=ECkdy to bude jedin=FD=20 zp=F9sob, jak se dostat k v=FDsledku, zvl=E1=9At=EC, nen=ED-li = tvoje matematick=E1=20 p=F8=EDprava dostate=E8n=E1). N=ECkdy mus=ED=9A vykonat kontroln=ED = experiment.
  9. Nezapome=F2 prov=E9st diskusi =F8e=9Aen=ED s ohledem na = dan=E9 hodnoty veli=E8in=20 a vybran=FD model k =F8e=9Aen=ED probl=E9mu.
  10. Stanov odpov=EC=EF na ot=E1zku danou textem probl=E9mu. = Nezapome=F2, =9Ee n=ECkdy jde=20 jen o =E8=EDselnou hodnotu hledan=E9 veli=E8iny, jindy = z=EDskan=FD v=FDsledek je=20 p=F8edpokladem pro vysloven=ED slovn=ED odpov=ECdi. Zdaj=ED se ti = =FAlohy obt=ED=9En=E9?=20 Nezapome=F2 na zn=E1mou pravdu: =E8=EDm v=EDce si nakresl=ED=9A = obr=E1zk=F9, =E8=EDm v=EDce se v=20 pokusech =E8i p=F8edstav=E1ch se p=F8ibl=ED=9E=ED=9A situaci, = o n=ED=9E se v =FAloze jedn=E1, =E8=EDm=20 v=EDce ud=ECl=E1=9A p=F8=EDpravn=FDch =E8innost=ED, t=EDm snadn=ECji = se potom dostane=9A k v=FDsledku.=20 Dal=9A=ED informace najde=9A v u=E8ebnic=EDch a  na = Internetu.

Upozorn=ECn=ED pro =F8e=9Aitele

Fyzik=E1ln=ED =FAlohy, zad=E1van=E9 v=ECt=9Ainou ve =9Akoln=EDch = hodin=E1ch fyziky, b=FDvaj=ED=20 jednoduch=E9 a p=F8i jejich =F8e=9Aen=ED =E8asto vysta=E8=EDte = s pou=9Eit=EDm logick=FDch =FAvah=20 nebo jen s jedn=EDm vzorce, do n=ECho=9E lze dosadit dan=E9 = veli=E8iny.

Ve fyzik=E1ln=ED olympi=E1d=EC za=F8azujeme v=ECt=9Ainou =FAlohy = probl=E9mov=E9, u kter=FDch je=20 t=F8eba nejprve formulovat podm=EDnky, za nich=9E je v=F9bec mo=9En=E9 = =FAlohu =F8e=9Ait,=20 zjednodu=9Ait situaci, kter=E9 se dan=FD probl=E9m t=FDk=E1 a zv=E1=9Eit = dosa=9Een=E9 v=FDsledky=20 s ohledem na vybran=E9 vstupn=ED =FAdaje. N=ECkter=E9 =FAlohy = vy=9Eaduj=ED spojit v=ECdomosti=20 z n=ECkolika =E8=E1st=ED fyziky, jin=E9 m=F9=9Eeme =F8e=9Ait jenom = tehdy, kdy=9E uv=E1=9E=EDme=20 informace z techniky nebo z dal=9A=EDch p=F8=EDrodov=ECdn=FDch = discipl=EDn. =D8e=9Aen=ED=20 ka=9Ed=E9 =FAlohy mus=ED b=FDt tedy dopln=ECno dal=9A=EDm = koment=E1=F8em, nelze jen vybrat vhodn=FD=20 fyzik=E1ln=ED vztah a =84zbavit=93 se probl=E9mu. Velmi d=F9le=9Eit=FDm = krokem je tzv. diskuse=20 =F8e=9Aen=ED, kter=E1 d=E1v=E1 do souvislosti nejen dan=E9 a = dopln=ECn=E9 hodnoty veli=E8in, ale=20 tak=E9 porovn=E1v=E1 z=EDskan=E9 v=FDsledky se skute=E8nost=ED =E8i = tabel=E1rn=EDmi hodnotami. V=20 posledn=EDch letech zad=E1v=E1me i takov=E9 =FAlohy, pro jejich=9E = =F8e=9Aen=ED je vhodn=E9 otev=F8=EDt=20 vhodn=E9 internetov=E9 str=E1nky.

 

=A92004=962009 FO, webmaster@fo.cuni.cz =96 Jan = Pracha=F8. All=20 Rights Reserved.

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BORDER-LEFT: black 1px solid; = BORDER-TOP: black 1px solid; BORDER-RIGHT: black 1px solid } #content #news DT { MARGIN: 1em 0px 1px } #content #news DD { BORDER-BOTTOM: #ffbf23 2px; POSITION: relative; BORDER-LEFT: #ffbf23 = 2px solid; PADDING-BOTTOM: 7px; MARGIN: 0px; PADDING-LEFT: 11px; = PADDING-RIGHT: 11px; BORDER-TOP: #ffbf23 2px solid; BORDER-RIGHT: = #ffbf23 2px solid; PADDING-TOP: 7px; _position: static; _padding: 0px } #content #news DD DIV { _padding: 7px 11px } #content #news DD.sign { BORDER-BOTTOM: #ffbf23 2px solid; TEXT-ALIGN: left; BORDER-LEFT: = #ffbf23 2px solid; PADDING-BOTTOM: 2em; PADDING-LEFT: 11px; = PADDING-RIGHT: 11px; MARGIN-LEFT: 0px; FONT-SIZE: smaller; BORDER-TOP: = #ffbf23 2px; BORDER-RIGHT: #ffbf23 2px solid; PADDING-TOP: 0px } #content #news DD.sign A.link { FLOAT: left } #content #news DD.sign A.sign { FONT-STYLE: italic; FLOAT: right; COLOR: white; TEXT-DECORATION: none } .tr { POSITION: absolute; PADDING-BOTTOM: 0px !important; MARGIN: 0px; = PADDING-LEFT: 0px !important; WIDTH: 11px !important; PADDING-RIGHT: 0px = !important; BACKGROUND: url(../images/top-right.png) no-repeat right = top; HEIGHT: 11px !important; TOP: -2px; RIGHT: -2px; PADDING-TOP: 0px = !important; _display: none } .tl { POSITION: absolute; PADDING-BOTTOM: 0px !important; MARGIN: 0px; = PADDING-LEFT: 0px !important; WIDTH: 11px !important; PADDING-RIGHT: 0px = !important; BACKGROUND: url(../images/top-left.png) no-repeat left top; = HEIGHT: 11px !important; TOP: -2px; PADDING-TOP: 0px !important; LEFT: = -2px; _display: none } .br { POSITION: absolute; PADDING-BOTTOM: 0px !important; MARGIN: 0px; = PADDING-LEFT: 0px !important; WIDTH: 11px !important; BOTTOM: -2px; = PADDING-RIGHT: 0px !important; BACKGROUND: = url(../images/bottom-right.png) no-repeat right bottom; HEIGHT: 11px = !important; RIGHT: -2px; PADDING-TOP: 0px !important; _display: none } .bl { POSITION: absolute; PADDING-BOTTOM: 0px !important; MARGIN: 0px; = PADDING-LEFT: 0px !important; WIDTH: 11px !important; BOTTOM: -2px; = PADDING-RIGHT: 0px !important; BACKGROUND: = url(../images/bottom-left.png) no-repeat left bottom; HEIGHT: 11px = !important; PADDING-TOP: 0px !important; LEFT: -2px; _display: none } ------=_NextPart_000_0000_01CA50A1.4C5B77A0 Content-Type: text/css; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Content-Location: http://fo.cuni.cz/css/content.css H1 { MARGIN-TOP: 0px; COLOR: #000000; FONT-WEIGHT: normal } H2 { MARGIN-TOP: 0px; COLOR: #000000; FONT-WEIGHT: normal } H3 { MARGIN-TOP: 0px; COLOR: #000000; FONT-WEIGHT: normal } H1 { =09 } H2 { FONT-SIZE: 197% } H3 { FONT-SIZE: 136%; FONT-WEIGHT: normal } P { LINE-HEIGHT: 160%; MARGIN-BOTTOM: 1.6em } UL { LINE-HEIGHT: 160%; MARGIN-BOTTOM: 1.6em } OL { LINE-HEIGHT: 160%; MARGIN-BOTTOM: 1.6em } DL { LINE-HEIGHT: 160%; MARGIN-BOTTOM: 1.6em } TABLE { LINE-HEIGHT: 160%; MARGIN-BOTTOM: 1.6em } P { =09 } BLOCKQUOTE { FONT-STYLE: italic } UL { =09 } OL { =09 } DT { FONT-WEIGHT: bold } DD { MARGIN-TOP: 0px } TABLE { BORDER-COLLAPSE: collapse } TD { BORDER-BOTTOM: white 1px solid; BORDER-LEFT: white 1px solid; = PADDING-BOTTOM: 4px; PADDING-LEFT: 4px; PADDING-RIGHT: 4px; BORDER-TOP: = white 1px solid; BORDER-RIGHT: white 1px solid; PADDING-TOP: 4px } TH { BORDER-BOTTOM: white 1px solid; BORDER-LEFT: white 1px solid; = PADDING-BOTTOM: 4px; PADDING-LEFT: 4px; PADDING-RIGHT: 4px; BORDER-TOP: = white 1px solid; BORDER-RIGHT: white 1px solid; PADDING-TOP: 4px } TH { TEXT-ALIGN: center; BACKGROUND-COLOR: #afa7a2; COLOR: black } CODE { FONT-SIZE: 100% } VAR { FONT-STYLE: italic } A { COLOR: #ffbf23 } A:hover { COLOR: #f7f0d4; TEXT-DECORATION: none } SMALL { =09 } HR { DISPLAY: none } IMG { BORDER-BOTTOM: #b2b2b2 1px solid; BORDER-LEFT: #b2b2b2 1px solid; = PADDING-BOTTOM: 1px; PADDING-LEFT: 1px; PADDING-RIGHT: 1px; BORDER-TOP: = #b2b2b2 1px solid; BORDER-RIGHT: #b2b2b2 1px solid; PADDING-TOP: 1px } DIV.center { TEXT-ALIGN: center; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: = 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px } TABLE.centered { TEXT-ALIGN: left; MARGIN: 0px auto 1.6em } IMG.block { DISPLAY: block } IMG.left { MARGIN: 0px 15px 0px 0px; FLOAT: left } IMG.right { MARGIN: 0px 0px 0px 15px; FLOAT: right } A:hover IMG { BACKGROUND-COLOR: #b2b2b2 } #content INPUT.text { BORDER-BOTTOM: white 1px solid; BORDER-LEFT: white 1px solid; = PADDING-BOTTOM: 2px; BACKGROUND-COLOR: #b2b2b2; PADDING-LEFT: 2px; = PADDING-RIGHT: 2px; FONT: 100% Georgia, "Times New Roman", Times, serif; = BORDER-TOP: white 1px solid; BORDER-RIGHT: white 1px solid; PADDING-TOP: = 2px } SELECT { BORDER-BOTTOM: white 1px solid; BORDER-LEFT: white 1px solid; = PADDING-BOTTOM: 2px; BACKGROUND-COLOR: #b2b2b2; PADDING-LEFT: 2px; = PADDING-RIGHT: 2px; FONT: 100% Georgia, "Times New Roman", Times, serif; = BORDER-TOP: white 1px solid; BORDER-RIGHT: white 1px solid; PADDING-TOP: = 2px } TEXTAREA { BORDER-BOTTOM: white 1px solid; BORDER-LEFT: white 1px solid; = PADDING-BOTTOM: 2px; BACKGROUND-COLOR: #b2b2b2; PADDING-LEFT: 2px; = PADDING-RIGHT: 2px; FONT: 100% Georgia, "Times New Roman", Times, serif; = BORDER-TOP: white 1px solid; BORDER-RIGHT: white 1px solid; PADDING-TOP: = 2px } #content INPUT { FONT: 100% Georgia, "Times New Roman", Times, serif } INPUT.button { CURSOR: pointer } .chyba_vstupu { COLOR: #f4a460 } .error { COLOR: #f4a460 } .chyba { COLOR: #f4a460 } #zadani DL { MARGIN: 0px } #zadani DT { MARGIN-TOP: 1.5em; MARGIN-BOTTOM: 0.5em; FONT-WEIGHT: bold } #zadani DD { MARGIN-LEFT: 0px } #zadani DD LI { LIST-STYLE-TYPE: lower-alpha; PADDING-LEFT: 0px } #photoGallery DIV.photoContainer { BORDER-BOTTOM: #d0d8dc 1px solid; BORDER-LEFT: #d0d8dc 1px solid; = PADDING-BOTTOM: 0px; MARGIN: 3px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; = FLOAT: left; BORDER-TOP: #d0d8dc 1px solid; BORDER-RIGHT: #d0d8dc 1px = solid; PADDING-TOP: 0px } #photoGallery DIV.photoContainer A { TEXT-ALIGN: center; PADDING-BOTTOM: 0px; MARGIN: 2px; PADDING-LEFT: = 0px; WIDTH: 175px; PADDING-RIGHT: 0px; DISPLAY: block; HEIGHT: 175px; = OVERFLOW: hidden; PADDING-TOP: 0px } #photoGallery DIV.photoContainer A IMG { BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: = 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: medium none; = BORDER-RIGHT: medium none; PADDING-TOP: 0px } #photoGallery DIV.photoContainer A:hover { BACKGROUND: #d0d8dc } ------=_NextPart_000_0000_01CA50A1.4C5B77A0 Content-Type: text/css; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Content-Location: http://fo.cuni.cz/css/print.css BODY { FONT-FAMILY: Georgia, "Times New Roman", Times, serif } A { COLOR: black } #header { DISPLAY: none } #search { DISPLAY: none } #menu { DISPLAY: none } #page { CLEAR: both } #splash { DISPLAY: none } #content { =09 } .title { PADDING-BOTTOM: 5px } #sidebar { DISPLAY: none } #footer { BACKGROUND: #ffffff; COLOR: #736b66; CLEAR: both } #footer P { TEXT-ALIGN: center; MARGIN: 0px; FONT-SIZE: 77% } #footer A { COLOR: #736b66 } #footer #links { DISPLAY: none } #content #forum UL { PADDING-BOTTOM: 0px; LIST-STYLE-TYPE: none; MARGIN: 0px; PADDING-LEFT: = 6px; PADDING-RIGHT: 0px; LIST-STYLE-IMAGE: none; PADDING-TOP: 0px } #content #forum > UL { PADDING-LEFT: 0px } #content #forum UL.vlakno_root { =09 } #content #forum LI { PADDING-BOTTOM: 0px; LIST-STYLE-TYPE: none; MARGIN: 0px; PADDING-LEFT: = 20px; PADDING-RIGHT: 0px; LIST-STYLE-IMAGE: none; PADDING-TOP: 25px } #content #forum > UL > LI { PADDING-LEFT: 0px } #content #forum LI.prispevek_root { =09 } #content #forum LI DIV DL { PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: = 0px; PADDING-TOP: 0px } #content #forum LI DIV DL DD.reagovat { DISPLAY: none } #content #forum #predchozi_diskuze { DISPLAY: none } #content FORM#forum-form { DISPLAY: none } #content #news DD { PADDING-BOTTOM: 7px; MARGIN: 0px; PADDING-LEFT: 11px; PADDING-RIGHT: = 11px; PADDING-TOP: 7px; _padding: 0px } #content #news DD DIV { _padding: 7px 11px } #content #news DD.sign { TEXT-ALIGN: left; PADDING-BOTTOM: 2em; PADDING-LEFT: 11px; = PADDING-RIGHT: 11px; MARGIN-LEFT: 0px; FONT-SIZE: smaller; PADDING-TOP: = 0px } #content #news DD.sign A.link { FLOAT: left } #content #news DD.sign A.sign { FONT-STYLE: italic; FLOAT: right; TEXT-DECORATION: none } .tr { DISPLAY: none } .tl { DISPLAY: none } .br { DISPLAY: none } .bl { DISPLAY: none } ------=_NextPart_000_0000_01CA50A1.4C5B77A0 Content-Type: text/css; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Content-Location: http://fo.cuni.cz/css/jquery.lightbox-0.5.css #jquery-overlay { Z-INDEX: 90; POSITION: absolute; WIDTH: 100%; HEIGHT: 500px; TOP: 0px; = LEFT: 0px } #jquery-lightbox { Z-INDEX: 100; POSITION: absolute; TEXT-ALIGN: center; LINE-HEIGHT: 0; = WIDTH: 100%; TOP: 0px; LEFT: 0px } #jquery-lightbox A IMG { BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: = medium none; BORDER-RIGHT: medium none } #lightbox-container-image-box { POSITION: relative; BACKGROUND-COLOR: #fff; MARGIN: 0px auto; WIDTH: = 250px; HEIGHT: 250px } #lightbox-container-image { PADDING-BOTTOM: 10px; PADDING-LEFT: 10px; PADDING-RIGHT: 10px; = PADDING-TOP: 10px } #lightbox-loading { POSITION: absolute; TEXT-ALIGN: center; LINE-HEIGHT: 0; WIDTH: 100%; = HEIGHT: 25%; TOP: 40%; LEFT: 0% } #lightbox-nav { Z-INDEX: 10; POSITION: absolute; WIDTH: 100%; HEIGHT: 100%; TOP: 0px; = LEFT: 0px } #lightbox-container-image-box > #lightbox-nav { LEFT: 0px } #lightbox-nav A { OUTLINE-STYLE: none; OUTLINE-COLOR: invert; OUTLINE-WIDTH: medium } #lightbox-nav-btnPrev { WIDTH: 49%; ZOOM: 1; DISPLAY: block; HEIGHT: 100% } #lightbox-nav-btnNext { WIDTH: 49%; ZOOM: 1; DISPLAY: block; HEIGHT: 100% } #lightbox-nav-btnPrev { FLOAT: left; LEFT: 0px } #lightbox-nav-btnNext { FLOAT: right; RIGHT: 0px } #lightbox-container-image-data-box { PADDING-BOTTOM: 0px; BACKGROUND-COLOR: #fff; MARGIN: 0px auto; = PADDING-LEFT: 10px; WIDTH: 100%; PADDING-RIGHT: 10px; FONT: 10px/1.4em = Verdana, Helvetica, sans-serif; OVERFLOW: auto; PADDING-TOP: 0px } #lightbox-container-image-data { PADDING-BOTTOM: 0px; PADDING-LEFT: 10px; PADDING-RIGHT: 10px; COLOR: = #666; PADDING-TOP: 0px } #lightbox-container-image-data #lightbox-image-details { TEXT-ALIGN: left; WIDTH: 70%; FLOAT: left } #lightbox-image-details-caption { FONT-WEIGHT: bold } #lightbox-image-details-currentNumber { PADDING-BOTTOM: 1em; DISPLAY: block; CLEAR: left } #lightbox-secNav-btnClose { PADDING-BOTTOM: 0.7em; WIDTH: 66px; FLOAT: right } ------=_NextPart_000_0000_01CA50A1.4C5B77A0 Content-Type: text/css; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Content-Location: http://fo.cuni.cz/css/jtip.css #JT_arrow_left { BACKGROUND-IMAGE: url(../images/arrow_left.gif); Z-INDEX: 101; = POSITION: absolute; WIDTH: 10px; BACKGROUND-REPEAT: no-repeat; = BACKGROUND-POSITION: left top; HEIGHT: 23px; TOP: -3px; LEFT: -12px } #JT_arrow_right { BACKGROUND-IMAGE: url(../images/arrow_right.gif); Z-INDEX: 101; = POSITION: absolute; WIDTH: 11px; BACKGROUND-REPEAT: no-repeat; = BACKGROUND-POSITION: left top; HEIGHT: 23px; TOP: -2px } #JT { Z-INDEX: 100; BORDER-BOTTOM: #cccccc 2px solid; POSITION: absolute; = BORDER-LEFT: #cccccc 2px solid; BACKGROUND-COLOR: #fff; BORDER-TOP: = #cccccc 2px solid; BORDER-RIGHT: #cccccc 2px solid } #JT_copy { PADDING-BOTTOM: 10px; PADDING-LEFT: 10px; PADDING-RIGHT: 10px; COLOR: = #333333; PADDING-TOP: 10px } .JT_loader { BACKGROUND-IMAGE: url(../images/loader.gif); WIDTH: 100%; = BACKGROUND-REPEAT: no-repeat; BACKGROUND-POSITION: center center; = HEIGHT: 12px } #JT_close_left { TEXT-ALIGN: left; PADDING-BOTTOM: 5px; BACKGROUND-COLOR: #cccccc; = PADDING-LEFT: 8px; FONT-WEIGHT: bold; PADDING-TOP: 2px } #JT_close_right { TEXT-ALIGN: left; PADDING-BOTTOM: 5px; BACKGROUND-COLOR: #cccccc; = PADDING-LEFT: 8px; FONT-WEIGHT: bold; PADDING-TOP: 2px } #JT_copy P { MARGIN: 3px 0px } #JT_copy IMG { BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; = PADDING-BOTTOM: 1px; PADDING-LEFT: 1px; PADDING-RIGHT: 1px; BORDER-TOP: = #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 1px } .jTip { CURSOR: help } #JT_close_left { FONT-SIZE: 0.8em } #JT_close_right { FONT-SIZE: 0.8em } #JT_copy P { MARGIN-TOP: 0.5em; FONT-SIZE: 0.6em } #JT_copy UL { MARGIN-TOP: 0.5em; FONT-SIZE: 0.6em } #JT_copy H1 { MARGIN-TOP: 0px; FONT-SIZE: 1em } #JT_copy H2 { MARGIN-TOP: 1em; MARGIN-BOTTOM: 0.5em; FONT-SIZE: 0.8em } #JT_copy { TEXT-ALIGN: left } #JT_copy UL { PADDING-LEFT: 2em; MARGIN-LEFT: 0px } ------=_NextPart_000_0000_01CA50A1.4C5B77A0--