Why does air move from solid land towards water during the night? A-Solid ground cools faster at night while water remains heat longer, warming the air above the water.

B- The ground retains the heat from the sun longer than the water.

C- The dry air over the land is heavier than the air over the water the contains more water vapor

D- gravity moves the air towards the water because water is lower than the land

Why is there friction between objects

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?