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1.2 Conservation and dissipation of energy

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Question 7

During one working day, a quarry conveyor belt is supplied with 600 MJ of energy. It transfers 210 MJ usefully to the gravitational potential store of the gravel it lifts. What is the efficiency of the conveyor belt as a percentage?

[1]
A

35%

B

286%

C

0.35%

D

65%

Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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