Energy produced by burning fuel is called:

What is the knetic energy of a 2 kg cart moving at 0.6 m/s?

If latent heat of fusion of ice is 3.34 x 105 J/kg, what is the amount of heat required to melt completely 400 g of ice without a temperature change?(i)     1.34 x 105 J (ii)    2.68 x 105 J (iii)   13.44 x 105 J (iv)   26.8 x 105 J

A car is moving West at a speed of 10 m/s. Which of the following statements is NOT true about the speed of a passenger in the car?

Choose from the following the best the best statement about specific heat of a substance.

A 90-kg man climbs up a flight of steps 5.5 m high in 30 s. What is the power developed by the man?

In order to explain the nature of light using the experimental results known in his time, Neils Bohr came up with a theory called the complementarity principle. Which of the following is the best explanation of this principle?

What is the increase in potential energy of a boy who does 80 J of work in climbing a flight of stairs?

Which of the following statement is true of the gravitational force when the distance between two objects decreases?

The intensity of a sound is a measure of