本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学
[问答题]
What happens to the gravitational potential energy when water at mcwakq,q q4/s 8np4p /the 9tnkh,)f3qmrw,v ;id + t7aiutop of a waterfall fallf7ktu;inqi rh9d,t+ ,vm3aw) s to the pool below?
参考答案: When water at the
top of a waterfall falls to the pool below, initially the water’s gravitational
PE is turned into kinetic energy. That
kinetic energy then can do work on the pool water when it hits it, and so some
of the pool water is given energy, which makes it splash upwards and outwards
and creates outgoing water waves, which carry energy. Some of the energy will become heat, due to
viscous friction between the falling water and the pool water. Some of the energy will become kinetic energy
of air molecules, making sound waves that give the waterfall its “roar”.
本题详细解析:
暂无
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