Advertisements
Advertisements
Question
State the energy changes which take place when:
A battery lighting up a bulb.
Solution
The electrical energy changes into heat energy and light energy.
APPEARS IN
RELATED QUESTIONS
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
State different forms of potential energy and give one example of each.
Select the renewable and non-renewable sources of energy from the following:
Coal
Name three non-renewable sources of energy.
What is tidal? Explain in brief.
What is the main source of energy for earth?
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s-2)
Name the energy changes for the following:
pendulum
Give three examples of bodies possessing kinetic energy.
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
