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प्रश्न
Fill in the boxe to show the corresponding energy transformation.
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उत्तर
Chemical energy ⇌ Electrical energy
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संबंधित प्रश्न
A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
Is power a scalar or a vector quantity?
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?
A force can cause an object to change its ______.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Suma is swimming in a pond.
A force of F = (5y + 20) `hat"j"` N acts on a particle. The work done by this force when the particle is moved from y = 0 m to y = 10 m is ______ J.
