Advertisements
Advertisements
प्रश्न
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Advertisements
उत्तर
The stone continues to rise in height as it is hurled. Kinetic energy falls while potential energy rises. The body has 0 KE and solely P.E. at its peak. Now, as the stone moves closer to the ground, its height decreases and P.E. also decreases. However, as speed increases, KE. increases, and at zero height on the ground, P.E. is zero and K.E. converts to heat, sound, etc.
APPEARS IN
संबंधित प्रश्न
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
State two advantages of using wind energy for generating electricity.
Name the energy changes for the following
human body
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
State the energy transformation on the following:
Electricity obtained from hydro energy.
Give one example when:
Mechanical energy to heat energy.
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
Can you tell?
Describe one natural chain of transformation of energy.
