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A D-cell battery can provide 100 [mA] for 30 hours at 1.5 [V]. How high could you lift a person of mass m = 70

A D-cell battery can provide 100 [mA] for 30 hours at 1.5 [V]. How high could you lift a person of mass m = 70 [kg] with a D-cell powering a 50% efficient winch?

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