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11 April, 04:29

if a runner's is 400 w as she runs, how much chemical energy does she convert into other forms in 10.0 minutes?

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  1. 11 April, 04:42
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    The runner runs for a total time of

    /Delta t=10.0 min = 600 sΔt=10.0min=600s

    The energy converted by the runner during this time is equal to the power of the runner times the total time:

    E=P / Delta t=400 W / cdot 600 s = 2.4 / cdot 10^5 JE=PΔt=400W⋅600s=2.4⋅10

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