
Fizika - 3.razred
Quiz
•
Physics
•
11th Grade
•
Hard
Sara Metelko
Used 5+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Koje veličine harmonijskog titranja u amplitudnom položaju imaju najveću vrijednost?
1. brzina
2. akceleracija
3. elastična sila
4. kinetička energija
5. potencijalna energija
samo 5 i 3
samo 2,3 i 5
samo 1 i 4
samo 5
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Tijelo mase m ovješeno je o oprugu. Tijelo malo povučemo prema dolje i pustimo. Tijelo počinje titrati zbog toga jer:
je povratna sila obrnuto proporcionalna pomaku iz ravnotežnog položaja.
je brzina obrnuto proporcionalna pomaku.
se opruga nalazi u polju sile teže.
je povratna sila proporcionalna pomaku iz ravnotežnog položaja.
je sila obrnuto proporcionalna pomaku iz ravnotežnog položaja i ima suprotan predznak od sile teže koja djeluje na uteg mase m.
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jednostavno njihalo koje titra periodom T, , na kojoj visi uteg koji titra periodom T, prenesemo na neki planet gdje je ubrzanje slobodnog pada dva puta veće nego na Zemlji. Perioda titranja utega u usporedbi s onim na Zemlji biti će:
dva puta veće
dva puta manje
nepromijenjen
četiri puta veće
četiri puta manje
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Tijelo mase m ovješeno o vertikalnu oprugu uzrokuje njeno produljenje za 0,4 m. Koliko titranja u minuti učini tijelo ako ga izvučemo iz ravnotežnog položaja i pustimo? (g=10 m/s2)
24
48
12
4
5.
FILL IN THE BLANK QUESTION
15 mins • 1 pt
Napišite izraz za vremensku ovisnost izmjenične struje ako je efektivna vrijednost struje 4,24 A, a period oscilacija 0,02 s.
6.
FILL IN THE BLANK QUESTION
15 mins • 1 pt
Promjena napona na kondenzatoru kapaciteta 44μF mijenja se u ovisnosti o vremenu prema izrazu
a) Koliki je kapacitivni otpor?
b) Kolika je amplituda izmjenične struje?
7.
FILL IN THE BLANK QUESTION
15 mins • 1 pt
Kolika je frekvencija njihala dugog 2,7 dm?
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