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प्रश्न
State the energy transformation on the following:
Electricity is obtained from hydro energy.
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उत्तर
Mechanical energy into electrical energy.
संबंधित प्रश्न
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
Define calorific value of a fuel.
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
State two disadvantages of producing electricity from solar energy.
Identify the type of energy possessed by the body in each of the following:
(a) A coiled spring of the toy car
(b) A hammer which is raised
(c) A stone shot from a catapult
(d) Water stored in the overhead tank
(e) A tadpole moving in water.
A ball of mass 0.5 kg slows down from a speed of 5m/s-1 to that of 3m/s-1. Calculate the change in kinetic energy of the ball.
What kind of energy is possessed in a situation when?
Water stored in dams.
State two advantages and disadvantages of using nuclear energy for producing electricity.
