4) A ball of mass 1 kg thrown upwards, reaches a maximum height of 5.0m. Calculate & the work done by the force of gravity during this vertical
displacement.

Which of the following is an example of units for speed

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

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.