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प्रश्न
State the energy changes which take place when:
Burning of coal.
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उत्तर
The chemical energy changes into heat energy.
संबंधित प्रश्न
State one important advantage and disadvantage each of using nuclear energy for producing electricity.
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
What is wind energy?
Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?
Write the type of energy possessed in the following case:
A falling apple
State the energy changes which take place when:
Electricity obtained from nuclear energy.
Give one example when:
Chemical energy to electrical energy.
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
