1.A horizontal water jet impinges against a vertical flat plate at 25 ft/s and splashes off the sides in the vertical plane. If a horizontal force of 350 lbf is required to hold the plate against the water stream, determine the volume flow rate of the water.
2.A piston cylinder contains 0.8kg of steam (water vapor) at 300 deg C and 1MPa absolute. The steam is cooled at constant pressure until half of the mass condenses.
(a) find the final temperature. (b) compute the volume change. (c) how many molecules of H20 is our system?