Advertisements
Advertisements
Question
State the law of conservation of energy.
Advertisements
Solution
According to the law of conservation of energy, energy can neither be created nor can it be destroyed. It only changes from one form to another.
RELATED QUESTIONS
How much energy is gained by a box of mass 20 kg when a man, carrying the box waits for 5 minutes for a bus?
In which of the following case the work done by a force will be maximum : when the angle between the direction of force and direction of motion is 0° or 90°?
Write an expression for work done by a force depends?
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.
An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
What is the difference between renewable and non-renewable resources?
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
State whether work is done or not, by writing yes or no, in the following case:
A boy climbs up 20 stairs.
