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प्रश्न
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
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उत्तर
The mechanical energy changes to potential energy during winding. The potential energy is then released in the form of kinetic energy.
संबंधित प्रश्न
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
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 work energy theorem.
State two disadvantages of using wind energy for generating electricity.
What is nuclear energy?
State the energy transformation on the following:
Electricity is obtained from wind energy.
What is the main energy transformation that occur in:
Charging of a battery.
Give one example when:
Electric energy changes to mechanical energy.
Use your brain power!
Why do tablets of camphor decrease in size day by day?
