What does this graph show? question 11 options: the object is speeding up during 4 seconds the object has zero acceleration because the line is flat the object not moving at all because the line is flat the object has a positive acceleration because the line is flat

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.