Describe how acceleration and velocity are related and specify if these are scalar or vector quantities.

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

What is friction? how does it affect the motion of an object?

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.