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प्रश्न
What is wind energy?
उत्तर १
The kinetic energy of the moving large masses of air is called the wind energy.
उत्तर २
The blowing wind has kinetic energy is called wind energy.
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संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
A bullet fired from a gun.
State the energy changes in the following case while in use:
an electric cell in a circuit
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?
What is the main energy transformation that occur in:
Charging of a battery.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
State the energy changes which take place when:
Burning of coal.
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]
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
Can you tell?
Describe one natural chain of transformation of energy.
