An elastic loaded water balloon launcher fires balloons at an angle of 52°with the ground. If the initial velocity of the balloon is 25 m/s, determine a)how far away from the launcher will each balloon land when it just comes in contact with level ground once more?
b)How high above the ground is the balloon at 3 seconds?
c)How high above the ground is the balloon after it has traveled 40 meters?

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.