BR - A cannon is fired from the edge of a small cliff. The height of the cliff is 45.0 m. The cannon
ball is fired with a perfectly horizontal velocity of
60.0 m/s. How far will the cannon ball fly
horizontally before it strikes the ground?
m

An object has a weight of 500 on earth what is the mass of this object

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.