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प्रश्न
State two advantages of using wind energy for generating electricity.
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उत्तर
Advantages of using the wind energy:
1. It does not cause any kind of pollution.
2. It is an everlasting source.
संबंधित प्रश्न
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
Select the renewable and non-renewable sources of energy from the following:
Wood
Name the energy changes for each of the following cases:
dynamo
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
Give one example when:
Kinetic energy changes to heat energy.
Give one example when:
Electrical energy to heat energy.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
Use your brain power!
How do we save fuel by using public transport?
