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प्रश्न
Give an example
Electrical energy changes of sound energy.
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उत्तर
Electric bell
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संबंधित प्रश्न
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
A box of weight 150 kgf has gravitational potential energy stored in it equal to 14700 J. Find the height of the box above the ground. (Take g = 9.8 N kg-1)
What are the units of (a) work, and (b) energy?
Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi?
State the conditions of equilibrium for a rigid body.
What do you mean by a kilo joule?
Give an example
Electrical energy changes to heat energy.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
