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# Hydro-electric Power Output and Conservation of Energy

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1. A man can throw a stone of mass 0.5kg upwards with a velocity of 10m/s. Using the conservation of energy equation find the maximum height that the stone can reach.

2. A hydroelectric power station has water falling from a reservoir at a height of 100 m above the turbine. If the water flow is 0.25 m3/s and the overall efficiency of the turbine plant is 60%, what is the electric power output?
Take g = 9.8 m/s2.
1 m3 of water has a mass of 1000 kg.

https://brainmass.com/physics/conservation-of-energy/hydro-electric-power-output-conservation-energy-40309

#### Solution Preview

When you throw a stone you are giving it a kinetic energy which is given by 0.5 m V^2

where m is the mass and v is its velocity.

If it is thrown up vertically, then it can go up to point at which its KE is ...

#### Solution Summary

Hydro-electric Power Output and Conservation of Energy are investigated.

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