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8 Energy – forces doing work

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Question 106
H

A pump raises 200 kg of water through a vertical height of 9.0 m each minute. Its efficiency is 0.60. Gravitational field strength is 10 N/kg. What is its mean input power?

[1]
A

500 W500\ \mathrm{W}500 W

B

30 000 W30\,000\ \mathrm{W}30000 W

C

180 W180\ \mathrm{W}180 W

D

300 W300\ \mathrm{W}300 W

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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