Does salt water freeze at a lower temperature than tap water?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

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.

Which is an advantage of subdividing science into different areas?