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1.7.4 Power

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Question 73

A skier travels to the top of a ski slope using either Ski Lift A or Ski Lift B.

Ski Lift A takes 5 minutes5\text{ minutes}5 minutes to carry the skier to the top. The useful work done against gravity is WWW, and the useful power developed is PPP.

Ski Lift B takes 4 minutes4\text{ minutes}4 minutes to carry the same skier to the top.

Which row in the table correctly identifies the useful work done against gravity and the useful power developed by Ski Lift B?

Useful work done against gravity by Ski Lift BUseful power developed by Ski Lift B
AWWWless than PPP
BWWWmore than PPP
Cmore than WWWmore than PPP
DWWWPPP
A

Useful work: WWW; useful power: less than PPP

B

Useful work: WWW; useful power: more than PPP

C

Useful work: more than WWW; useful power: more than PPP

D

Useful work: WWW; useful power: PPP

Markscheme

1.7.4 Power Questions

  1. IGCSE
  2. /Physics
  3. /1.7.4 Power

95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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