The u. s. army coastal engineering research center had a wave tank that was 193 m long, 4.57 m wide, and 6.1 m deep. if the tank is wlled with fresh water to a depth of 4 m, calculate the fundamental periods of longitudinal and lateral resonant oscillations in the tank. does it appear that these fundamental modes or their harmonics would cause any diyculty to experimenters who wish to operate at full-scale wave periods

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.