The component of a refrigerator or air conditioner that absorbs and releases heat energy is the compressor, expansion valve, condenser, or refrigerant

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

What human activity increases beach erosion?