Hwo does a hydroelectric power plant convert energy

Will a heavier bowling ball hit pins better than a lighter bsll

Determine the maximum r-value of the polar equation r =3+3 cos 0

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.