If it is desired to pump breathing air in a hose for a diver at a depth of 14m, what is the maximum force applied to the piston of the pump? The piston has a surface area of 4.5 cm²

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

Preciso de ajuda na parte de termometria e tenho prova amanhã ajuda ae prf

Which is not true of alpha radiation? o a. it increases the number of protons. o b. it has a positive charge. o c. it causes transmutation. o d. it is heaviest of the three types