Steam flows steadily through an adiabatic turbine. the inlet conditions of the steam are 6 mpa, 400°c, and 80 m/s, and the exit conditions are 40 kpa, 92 percent quality, and 50 m/s. the mass flow rate of the steam is 20 kg/s. determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area.

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r