MG Forum

Outline · Standard · [ Linear+ ]

> Pomoc

Track this topic | Email this topic | Print this topic
nikolapfc
post Mar 8 2011, 05:59 PM
Post #1





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
Za pocetak,zovem se Nikola i idem u osnovnu skolu.Registrovao sam na ovaj forum,jer su mi stvarno potrebni resenja ovih zadataka iz fizike,toliko potrebni da od toga zavisi moj upis u srednju skolu,ako bilo ko zna kako da ih resi bio bih mu veoma zahvalan...Ovo su zadaci

1. odrediti jacinu homogenog elektricnog polja ako se pri pomeranju naelektrisane kuglice vrsi rad od 20J.kuglica se pomera duz linije sile za 20 cm a njeno naelektrisanje je 0,4 C.

2. pri proticanju struje kroz poprecni presek provodnika za 3 sekunde prodje kolicina naelektrisanja od 20 C.kolika ce kolicina naelektrisanja proteci za 8 sekundi?kolika je jacina struje?

3.kolika treba da bude povrsina poprecnog preseka gvozdene telefonske zice duzine 600 km da bi otpor bio 50 K oma?specificni otpor gvozdja je 12*10 na -8 om metara.

4. otpor potrosaca je 15 oma.elektromotorna sila izvora je 12 V,a unutrasnji otpor izvora je 0,5 oma.kolika je jacina struje?
nadji u svesci ili knjizi oznaku za om posto ne mogu da napisem na kompu...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topicStart Poll
Replies(1 - 19)
pyost
post Mar 9 2011, 12:19 AM
Post #2


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
Svi ovi zadaci se svode na koriscenje po jedne formule...

1. Formula za jacinu elektricnog polja
E = \frac{F}{q} = \frac{A}{q \cdot l}
E - jacina polja
F - sila
q - kolicina naelektrisanja
A - rad
L - duzina


2. Formula za jacinu struje
user posted image
I - jacina struje
Q - kolicina naelektrisanja
T - vreme


3. Formula za otpor provodnika
user posted image
R - otpor
Ro - specifisna otpornost
L - duzina provodnika
A - poprecni presek provodnika


4. Omov zakon
I = \frac{U}{R+r}
I - jacina struje
U - elektromotorna sila izvora
R - otpor potrosaca
r - unutrasnji otpor izvora


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DSoboci
post Mar 9 2011, 01:11 AM
Post #3





Group: Članovi
Joined: 5-March 09
Member No.: 1.146
Status: Učenik MGa
Ime i prezime: Dušan Šobot
Škola/Razred: IIId
Mala ispravka, gore je F=A/l, a ne A*l, pa je formula E=F/ql, inace je super
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Kuzman
post Mar 9 2011, 01:22 AM
Post #4





Group: Članovi
Joined: 19-February 07
Member No.: 450
Status: Učenik MGa
Ime i prezime: Kuzmanovic Marko
Škola/Razred: 07D
Nesica saves the day smile.gif


--------------------
What's cuter than a platonic solid? A cat dressed up as a platonic solid for Halloween!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Mar 9 2011, 08:35 AM
Post #5


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
QUOTE(DSoboci @ Mar 9 2011, 01:11 AM)
Mala ispravka, gore je F=A/l, a ne A*l, pa je formula E=F/ql, inace je super
*



Stvarno se sramotim, zaboravio sam formulu za rad blush.gif


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DSoboci
post Mar 9 2011, 10:48 AM
Post #6





Group: Članovi
Joined: 5-March 09
Member No.: 1.146
Status: Učenik MGa
Ime i prezime: Dušan Šobot
Škola/Razred: IIId
I ja sam failovao, formula je A/ql hahahha
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Kuzman
post Mar 9 2011, 11:29 AM
Post #7





Group: Članovi
Joined: 19-February 07
Member No.: 450
Status: Učenik MGa
Ime i prezime: Kuzmanovic Marko
Škola/Razred: 07D
ma Log[A*q]/Log[l] sta lozite tipa!


--------------------
What's cuter than a platonic solid? A cat dressed up as a platonic solid for Halloween!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nikolapfc
post Mar 9 2011, 01:42 PM
Post #8





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
Hvala ljudi samo mi je potrebna provera da li sam tacno izracunao..

1. zadatak resenje je: E.=250 N/C
2. zadataj resenje je: q2=53,36 C
3. zadatak resenje je: S=144*10 na -8 m kvadratnih
4.zadatak resenje je: I=1,3 A

Je l su tacni rezultati?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Mar 9 2011, 02:08 PM
Post #9


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
Drugi i cetvrti nisu, mada si u drugom verovatno pogresio u kucanju, izracunaj ponovo.


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nikolapfc
post Mar 9 2011, 02:15 PM
Post #10





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
Aha dobro,ali samo mi nije jasno gde sam pogresio u 4. zadatku?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Mar 9 2011, 02:20 PM
Post #11


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
I\ =\ \frac{U}{R+r}\ =\ \frac{12V}{15\Om\ +\ 0.5\Om}


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nikolapfc
post Mar 9 2011, 02:24 PM
Post #12





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
Aha sad mi je jasno,nisam lepo izracuonao..Sad dobijem rezultat veliki ali zaokruzicu na 0,774..
Je l sad dobro?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Mar 9 2011, 02:29 PM
Post #13


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
Jeste


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nikolapfc
post Mar 9 2011, 02:35 PM
Post #14





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
E druze mozes li mi samo drugi pomoci,ne znam bas najbolje ove jedinice i pretvaranje..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Mar 9 2011, 02:40 PM
Post #15


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
Pa nista, nije 53.36 nego 53.33


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nikolapfc
post Mar 9 2011, 02:41 PM
Post #16





Group: Članovi
Joined: 8-March 11
Member No.: 1.345
Status: Van MGa
Uh dobro je ja rekao odmah sta sam sad uradio..biggrin.gif
Zeleo bih da vam se zahvalim na pomoci puno ste mi pomogli..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SBS
post Mar 9 2011, 11:23 PM
Post #17



Group Icon

Group: Moderatori
Joined: 25-April 08
Member No.: 1.043
Status: Van MGa
a šta planiraš da upišeš?


--------------------
зашто цитирати песму, кад једноставно можеш рећи своје мишљење: " Не волим кнедле са шљивама"!!!


Now i wanna sniff some glue!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Ucenik20
post Jan 7 2012, 04:09 PM
Post #18





Group: Članovi
Joined: 7-January 12
Member No.: 1.835
Status: Van MGa
Ime i prezime: Ivan Boskovski
Škola/Razred: "KAIK" VIII1
jel moze neko da mi pomogne da naucim programske jezike c, c++ pascal itd?
posto bih vole da se bavim programiranjem......
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dadkristy94
post Jan 7 2012, 09:48 PM
Post #19





Group: Članovi
Joined: 8-June 08
From: Beograd
Member No.: 1.066
Status: Van MGa
Ime i prezime: Kristina Radojević
Škola/Razred: I beogradska gimnazija III/5
http://pascal-programming.info/lesson1.php
http://www.cprogramming.com/

Naravno postoji gomila sajtova na istu temu. Izguglaj i pronadji objasnjenje koje ti najvise odgovara smile.gif


--------------------
''Manifesta haud indigent probatione''
(Za ono sto je jasno dokazivanje nije potrebno) XD
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pyost
post Jan 8 2012, 12:24 AM
Post #20


Deus Ex Makina
Group Icon

Group: Administratori
Joined: 25-January 06
From: Beograd
Member No.: 2
Status: Bivši učenik MGa
Škola/Razred: RAF
Ovi linkovi koje je dadkristy ostavila su odlični za početak. Samo se nadam da znaš engleski, pošto bez toga teško da ćeš daleko dogurati.


--------------------
Baby, it's a violent world.

Registrovani korisnik Linuxa broj 460770 [Ubuntu 7.10]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · Off-Topic · Next Newest »
 

Reply to this topicTopic OptionsStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
 

Powered by Invision Power Board(Trial) v2.0.0 © 2024  IPS, Inc.