Aprototype boat is 30 meters long and is designed to cruise at 9 m/s. its drag is to be simulated by a 0.5-meter-long model pulled in a tow tank. for froude scaling find a)-the tow speed b)-the ratio of model to prototype drag c)-the ratio of model to prototype power.

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.