体积相等的实心铜球和铅球,放在同一高度,则:A.铜球具有的重

体积相等的实心铜球和铅球,放在同一高度,则:

A.铜球具有的重力势能大:             B.铅球具有的重力势能大;    

C.铅球和铜球的重力势能相等;    D.条件不足,无法判断

答案

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