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A student who weighs 564 N climbs a stairway (vertical height of 4.1 m) in 30 s. (a) How much work is done? (b) What

A student who weighs 564 N climbs a stairway (vertical height of 4.1 m) in 30 s.
(a) How much work is done?
(b) What is the power output of the student?

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