Energy :: Discussion


5.If the water falls from a dam into a turbine wheel 19.6m below, then the velocity of water at the turbine is? (g=9.8m/s)?
A.9.8m/s
B.19.6m/s
C.39.2m/s
D.98m/s
Answer:  Option  B
Explanation:

Loss in potential energy = Gain in kinetic energy
mgh = 1/2mv2
v = √2gh = √(2×9.8×19.6)=19.6m/s.

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Published by:Michael Daani

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