If your friend pushes a lawnmower four times as far as you do while exerting only half the force, which one of you does more work

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Does heating a metal wire increase or decrease its electrical resistance? why?

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)