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3 Conservation of energy

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Question 2

Two electric turntables are tested while accelerating their platforms. Each turntable dissipates 90 J of energy during its test.

Turntable P has an efficiency of 0.60 and turntable Q has an efficiency of 0.75.

What is the ratio of the useful energy transferred by P to the useful energy transferred by Q?

[1]
A

4:54:54:5

B

2:12:12:1

C

1:21:21:2

D

8:58:58:5

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3 Conservation of energy Questions

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

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