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प्रश्न
State the energy transformation on the following:
Electricity is obtained from wind energy.
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उत्तर
The Kinetic energy changes into electricity.
संबंधित प्रश्न
Name the process used for producing electricity using nuclear energy.
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
What name is given to the heat energy obtained from hot rocks inside the earth?
Name the type of energy (kinetic or potential) possessed by the following:
A stone at rest on the top of a building.
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
Explain the principle of generating electricity from hydro energy.
Draw a diagram to show the energy changes in an oscillating simple pendulum. Indicate in your diagram how the total mechanical energy in it remains constant during the oscillation.
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
What is meant by energy?
