There is no time to lose.

A ball is projected form the ground at an angle of 45^(@) with the horizonatl surface .It reaches a maximum height of 120 m and return to fthe ground .upon hitting the ground for the first time it loses half of its kinetic energy immediately after the bounce the velocity of the ball makes an angle of 30^(@) with the horizontal surface .The maximum height it reaches after the bounce in metres is _______

Force F is applied on upper pulley. If F = 30 t where t is time in second. Find the time when m_(1) loses contact with floor : (Take g = 10 m//s^(2) )

A metal 'P' when exposed to moist air for longer period of times, loses its shining brown surface and gains green coating, what has happened ? Identify the metal, write the name and chemical formula of green coloured compound. List two ways to prevent this process.

Sonu and Raj have to collect different kinds of leaves for science project. They go to a park where Sonu collects 12 leaves and Raj collects x leaves. After some time Sonu loses 3 leaves and Raj collects 2x leaves. Write an algebraic expression to find the total number of leaves collected by both of them.

Will pendulum clock lose or gain time on hills or inside the mines ?

A pendulum clock, which keeps correct time at sea level, loses 15s per day when taken to the top of a mountain. If the radius of the earth is 6400km , the height of the mountain is

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life. How much time will it take to lose its activity by 90% ?

The tendency if an element to lose an electron is called