3. A cannon with a 200 cm long barrel applies a constant force of 120 N over the length of the barrel. If a monkey shoots the 2.7 kg cannonball
straight up, what is the maximum height it reaches?

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.