A cricket ball of mass 100 g moving with a speed of 20 ms^-1 is brought to rest by a player. Find the change in momentum of ball.

A force of 60 N acts on a body for 10 s. What is the change in momentum?

When a constant force acts of 10 s on a body of mass 10 kg, which is initially at rest, moves a distance of 500 cm in 10 s. Calculate the frictional force required to bring the body to rest.

When an object is placed at 25 cm from a concave lens, a virtual image is produced at a distance of 10 cm. Calculate the magnification produced by the lens.

A metal scale is graduated at 0°C so what would be original length of the object when measured at 25°C, reads 50 Cm? For a metal, the coefficient of linear expansion is 18 x 10^-6/ °C.

The potential difference between two conductor is 110 V. How much work in moving 5 C charge from one conductor to the other?

At what temperature will the velocity of sound in air be double the velocity of sound in air at 0°C?

Convert 1Bq into curie.

Find the mass of 2.5 mole of oxygen atom.

The hydroxyl ion concentration of a solution is 1 x 10^-9 M. What is the pOH of the solution?