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Machines A, B, and C do the same amount of work, but they each take a different amount of time. Machine A takes more time as compared to machine C. Machine B takes the maximum time to do the same amount of work. Which machine expends the most power doing this work?

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2 answers
  1. Power = work/time
    Look at the equation - If time increases, would power increase or decrease? If you're not sure, plug some numbers into the equation.

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  2. My answer is Machine C.

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