Lucrul mecanic și puterea mecanică

Quiz
•
Physics
•
7th Grade
•
Hard
Maria Tamas
Used 4+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Unitatea de măsură pentru lucrul mecanic este:
newton
joule
watt
cal-putere
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Unitatea de măsură în Sistemul Internațional pentru puterea mecanică este:
newton
joule
watt
cal-putere
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un joule reprezintă:
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un watt reprezintă:
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dacă o sanie este trasă cu forța de 50N pe direcția orizontală de mișcare pe distanța de 2km, lucrul mecanic efectuat va fi:
100kJ
10000J
1000J
100J
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O locomotivă trage garnitura de vagoane cu forța de 180000N, în timp ce efectuează lucrul mecanic de 900000kJ.Care este valoarea deplasării locomotivei?
5km
500m
50km
500km
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Petrică trage săniuța cu o forță de 40N pe o distanță de 45m pe un drum orizontal Ionică ridică săniuța de 12kg pe verticală la înălțimea de 15m. Care dintre cei doi băieți efectuează un lucru mecanic mai mare?
Petrică
Ionică
Amândoi efectuează un lucru identic
nu se poate preciza
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