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(a) Calculate the gravitational potential energy of a 78 kg mass on the surface of the...

(a) Calculate the gravitational potential energy of a 78 kg mass on the surface of the Earth._____ J
(b) Calculate the gravitational potential energy at an altitude of 3 km._____J
(c) Take the difference between the results for parts (b) and (a), and then compare this with mgh, where h = 3 km.
_____J (difference between parts a and b)
_____J (difference between a and b) / (mgh)

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