What must happen in order for water to change state?
a. it must maintain its thermal energy level.
b. it must absorb or release energy.
c. it must be insolated.
d. it must be convert thermal energy to solar energy.

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

What are similarities and differences of reflection, refraction, diffraction and absorption?

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack