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3 Conservation of energy

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Question 18

A hand-cranked generator transfers 42 J of energy to the chemical energy store of a rechargeable cell. It also transfers 7 J to its thermal energy store and 3 J by sound.

There are no other energy transfers.

How much energy is transferred mechanically to the generator?

[1]
A

32 J32\ \mathrm{J}32 J

B

49 J49\ \mathrm{J}49 J

C

52 J52\ \mathrm{J}52 J

D

45 J45\ \mathrm{J}45 J

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3 Conservation of energy Questions

  1. GCSE
  2. /Physics
  3. /3 Conservation of energy

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