Advertisements
Advertisements
प्रश्न
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
Advertisements
उत्तर
A car engine converts chemical energy into mechanical energy.
APPEARS IN
संबंधित प्रश्न
A ball is placed on a compressed spring. What form of energy does the spring possess? On releasing the spring, the ball flies away. Give a reason.
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)
Define the term 'energy' of a body. What is the SI unit of energy.
A ball of mass 0.5 kg slows down from a speed of 5 m/s so that of 3 m/s. Calculate the change in kinetic energy of the ball. State your answer giving proper units.
Name the device or machine which convert :
Mechanical energy into electrical energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
Write the energy transformations which take place in an electric bulb (or electric lamp).
A ball falls to the ground as shown below :
Which law you have made use of in answering this question?
A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:
- the loss in potential energy of the body, and
- the total energy possessed by the body at any instant? (Take g = 10 m s-2)
