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प्रश्न
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उत्तर
Four different forms of energy:
(i) Solar energy
(ii) Mechanical energy
(iii) Wind energy
(iv) Nuclear energy
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संबंधित प्रश्न
A coolie does no work against the force of gravity while carrying a luggage on a road.
State two conditions when no work is done by a force.
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
In case of negative work, the angle between the force and displacement is :
What is power? How do you differentiate kilowatt from kilowatt-hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of waterfalls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)
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.
