
Quiz despre Lucrul Mecanic, Puterea și Energia Mecanica
Quiz
•
Physics
•
7th Grade
•
Hard
Sergiu Godovaniuc
Used 3+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce este lucrul mecanic efectuat de o forță constantă?
Suma forțelor aplicate
Diferența dintre forță și greutate
Produsul dintre forță și distanța parcursă
Raportul dintre forță și timp
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce unitate de măsură se folosește pentru lucrul mecanic?
Kilogram
Newton
Watt
Joule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezintă un joule?
Lucrul mecanic efectuat de o forță de 1 N pe o distanță de 1 m
Energia potențială a unui corp
Puterea dezvoltată de un motor
Energia cinetică a unui corp
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este formula pentru puterea mecanică?
P = L / t
P = L · t
P = m · g · h
P = F · d
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce se întâmplă cu energia mecanică într-un sistem izolat?
Se pierde
Se transformă
Rămâne constantă
Crește
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce tip de energie are un corp aflat în mișcare?
Energie cinetică
Energie potențială
Energie termică
Energie electrică
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cum se calculează energia cinetică a unui corp?
E_c = m · g · h
E_c = P · t
E_c = m · v^2 / 2
E_c = F · d
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