Physics
In hydro power station, the motion produced in turbines is due to

Flow of water
Burning of coal
Burning of diesel
Production of steam

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Physics
Superconductors are those elements

Whose resistance falls almost to zero at very low temperatures
Which conduct electricity only at super-high temperatures
Which turn into insulators at very low temperatures
Whose conductivity is intermediate between metals and insulators

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Physics
It takes much longer to cook food in the hills than in the plains, because

n the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil
in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking

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