Arear wheel drive car of mass 1000kg is accelerating with a constant acceleration without slipping from 0 to 60m/s in one minute. what will be the friction force on each rear wheel of the car?

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?