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संबंधित प्रश्न
State the S.I. unit of energy.
A boy weighing 25 kgf climbs up from the first floor at height 3 m above the ground to the third floor at height 9m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg -1)
If the work done by a force in moving an object through a distance of 20 cm is 24.2 J, what is the magnitude of the force?
How many watts equal one horse power?
Its moment of a force scalar or a vector quantity?
Why does a spanner have a long handle?
Is power a scalar quantity?
Can every force produce work?
Define the term work. Name the CGS and SI unit of work.
List any six forms of energy and write a short note on each of them.
What do you understand by 'potential energy' and 'Kinetic energy'? Give three examples of each to illustrate your answer.
Give an example
Chemical energy changes to electrical energy.
An electric motor pump is 60% efficient and is rated 2.5 H.P. Calculate the maximum load it can lift through a height of 10m in 8 sec. (1 H.P. = 750 W).
A is a push or a pull ______.
