A 2 kg stone is dropped from 55 meters. What is the potential energy of the stone at the top?

Who was the first scientist to measure speed as distance over time?

Which accounts for an increase in the temperature of a gas that is kept a constant volume

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is