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प्रश्न
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
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उत्तर
Burning of wood, coal etc.
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संबंधित प्रश्न
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
Why using wood as fuel is not advisable although wood is a renewable source of energy?
What is the main source of energy for earth?
What is solar energy?
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
In a heat engine.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
What are the small particles that can be seen in a beam of light that enters a dark room?
