Advertisements
Advertisements
Question
Name the energy transfers which occur when :
an electric ball rings
Advertisements
Solution
An electric bell converts electrical energy to sound energy.
APPEARS IN
RELATED QUESTIONS
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. Taking g = 10 m s−2, calculate:
- the potential energy possessed by the ball when it is initially at rest.
- the kinetic energy of the ball just before it hits the ground?
State whether the object possess kinetic energy, potential energy, or both :
A flying aeroplane _______________.
What kind of energy is possessed by the following?
A stretched rubber band _____________
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.
Water stored in a dam possesses :
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
Which of the following energy change involves frictional force?
