本题目来源于试卷: Linear Momentum，类别为 IB物理学
[问答题]
At a hydroelectric p4+c kqr;/j lxkower plant, water is directed at high speed against vzx s5/g ,8mfqvz.at)ek3ar;turbine blades on an axle that turns an electric generator. For maxi,;g exka z vqs)vf8zr .t/3ma5mum power generation, should the turbine blades be designed so that the water is brought to a dead stop, or so that the water rebounds?
参考答案:
The turbine blades should be designed so that
the water rebounds. If the water
rebounds, that means that a larger momentum change for the water has occurred
than if it just came to a stop. And if
there is a larger momentum change for the water, there will also be a larger
momentum change for the blades, making them spin faster.
本题详细解析:
暂无
| 
