If the force of gravity between the sun and the planets disappeared, what would happen to the path the planets follow? a)they would continue to rotate around the sun. b)the planets velocity would increase as it got closer to the sun. c)the speed at which they are moving would significantly slow down. d)they would move in a straight line at a constant speed and velocity.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.