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प्रश्न
Potential energy and heat energy are the two forms of mechanical energy.
विकल्प
True
False
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उत्तर
Potential energy and heat energy are the two forms of mechanical energy- False.
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संबंधित प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?
Write the expression for the gravitational potential energy explaining the meaning of the symbols used.
The potential energy of a body is the energy by virtue of its ______.
A ball of mass m is thrown vertically up with an initial velocity so as to reach a height h. The correct statement is:
Two bodies A and B of equal masses are kept at heights of h and 2h respectively. What will be the ratio of their potential energies?
A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy does he gain? (g = 9.8 m/s2)
Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth.
If 784 J of work was done in lifting a 20 kg mass, calculate the height through which it was lifted. (g = 9.8 m/s2)
When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero?
