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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
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Two toy-cars A and B of masses 500 g and 200 g respectively are moving with the same speed. Which of the two has the greater kinetic energy?
State the energy changes in the following case while in use:
an electric cell in a circuit
What is hydro energy?
What kind of energy is possessed in a situation when?
A fish moving in the water.
State the energy changes which take place when:
In a heat engine.
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
