
Puterea mecanica
Authored by Anamaria Nicoleta Burduaza
Physics
7th Grade
Used 3+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezintă puterea mecanică?
Energia totală a unui sistem
Raportul dintre muncă și timp
Forța aplicată asupra unui obiect
Viteza unui corp în mișcare
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este formula puterii mecanice?
P = F × d
P = W × t
P = W / t
P = m × g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unitatea de măsură a puterii mecanice în Sistemul Internațional (SI) este:
Joule (J)
Watt (W)
Newton (N)
Pascal (Pa)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dacă un muncitor efectuează o muncă de 500 J în 10 secunde, care este puterea dezvoltată?
50 W
5000 W
5 W
100 W
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce se întâmplă cu puterea mecanică dacă timpul în care se efectuează o muncă crește, dar munca rămâne constantă?
Crește
Scade
Rămâne aceeași
Devine negativă
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