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प्रश्न
Give an example
Chemical energy changes to heat energy.
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उत्तर
Candle flame
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संबंधित प्रश्न
Work is said to be done by a forte only when ................
What do you mean by degradation of energy?
A force of 50 N acts on a body and moves it a distance of 4 m on horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force.
Is the motion of moon around the earth in circular path an accelerated motion?
Can every force produce work?
A cricket ball is thrown up from the earth's surface. What happens to its P.E.
(a) during the motion
(b) at the highest point?
A bullet is of mass 'm' g and is moving with a velocity 'v' m/s. Find the kinetic energy of the bullet when
(a) The mass is doubled,
(b) The velocity is tripled.
Name the material commonly used for the manufacturing of solar cells.
________ is said to be done when a force is acting on it.
