Name the liquid in which iron ball sinks.

An iron ball and a feather are both falling from a height of 10 m. (a) What are the time taken by the iron ball and feather to reach the ground? (b) What are the velocities of iron ball and feather when they reach the ground? (Ignore air resistance and take g=10ms^(-2)

A circket ball falls from a height of 40 m. What is the velocity with which the ball hits the ground ?

A small metal ball falls in liquid with a terminal velocity of V. If a ball of radius twice of first ball but same mass falls through a same medium, calculate the terminal velocity with which it falls.

Which gas forms the liquid first as the air is cooled?

An urn contains 5 red and 2 green balls. A ball is drawn at random from the urn. If the drawn ball is green, then a red ball is added to the urn and if the drawn ball is red, then a green ball is added to the urn, the original ball is not returned to the urn. Now, a second ball is drawn at random from it. The probability that the second ball is red is

An iron ball requires 9000 J heat energy to raise its temperature by 10^@C . Calculate the heat capacity of the iron ball.

An iron ball requires 5000 J heat energy to raise its temperature by 20^@C . Calculate the heat capacity of the iron ball.