Advertisements
Advertisements
प्रश्न
Give an example
Chemical energy changes to heat energy.
Advertisements
उत्तर
Candle flame
APPEARS IN
संबंधित प्रश्न
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?
Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
Power spent by a body depends on the time for which it does work.
The S.I. unit of energy is .............
A weight lifter lifted a load of 200 kgf to a height of 2.5 m in 5 s. Calculate:
- the work done, and
- the power developed by him. Take g = 10 N kg-1
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force.
Fill in the boxe to show the corresponding energy transformation.
