What does energy and transfer mean? in your opinion please

In what direction does the medium move relative to the direction of the wave? explain.

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)