A 2-kg block is thrown upward from a point 20 m above the Earth's surface. At what height above Earth's surface will the gravitational potential energy of the Earth-block system have increased by 500 J? 

A)  5 m 

B)  25 m 

C)  46 m 

D)  70 m 

E)  270 m 

Answer rating: 100% (QA)

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