gc physics textbook chapter 6 problems (id: cbd3dec75)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[填空题]
Water flows over a dam at the rate o4foxzsx*on) bbjl l/ eg70m7*f 6ks4j25)uod 1dodr vyo0)x ,cnby y;c .50kg/s and falls vertically 81 m before striking the turbine blade nyd0 )os24v r1;ub ycdx5o,co)d.j yks. Calculate
(a) the speed of the water just before striking the turbine blades (neglect air resistance), $\approx$    m/s
(b) the rate at which mechanical energy is transferred to the turbine blades, assuming 58% efficiency.    W

参考答案:
空格1: 4±2%  空格2: 300000±2% 


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