Science Questions

An electric bulb of 60 W is used for 10 hours daily. How many 'units' of energy are consumed in 30 days?

If a body is moved through a distance s by a force F, the work done W is given by:

A girl of mass 40 kg runs up a flight of 50 steps, each 10 cm high. The work done by her is: (g = 10 m/s^2)

The energy of a body due to its motion is:

If the kinetic energy of a body becomes 9 times its initial value, its momentum becomes:

The kinetic energy of a body of mass 2 kg moving with a velocity of 2 m/s is:

Which of the following is NOT a form of energy?

A stone of mass 5 kg is dropped from a height of 10 m. What is its kinetic energy just before hitting the ground? (g = 10 m/s^2)

The unit of energy in the FPS system is:

How much work is done when a force of 5 N moves an object through 10 cm in the direction of the force?

Power is a:

Which of these is used to store electrical energy in the form of chemical energy?

Calculate the kinetic energy of a ball of mass 0.5 kg moving at a speed of 4 m/s.

When a force acts at an angle of 180 degrees to displacement, the work done is:

The energy of the wind is used to rotate the blades of a windmill. This is an example of converting:

One Joule is equal to how many ergs?

The work-energy theorem states that work done on a body is equal to change in its:

A man of 60 kg climbs up 20 m. If he takes 10 seconds, what is his power? (g = 10 m/s^2)

Potential energy (PE) formula is:

When the speed of a moving body is doubled, its momentum is: