本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理
[问答题]
At a hydroelectric power plant, water is directjx:.pe 3bkkll4o9 .swed at high sp 8p aun+wjcyx5li85swgc7-v2 eed against turbine blades on an axle that turns an electric generator. For mpnw7l+ycx v82 5ac8i 5jwsgu-aximum 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
| 
