A0.5-mhz antenna carried by an airplane flying over the ocean surface generates a wave that approaches the water surface in the form of a normally incident plane wave with an electric-field amplitude of 3000 v/m. sea water is characterized by and the plane is trying to communicate a message to a submarine submerged at a depth d below the water surface. if the submarine’s receiver requires a minimum signal amplitude of 0.01 what is the maximum depth d to which successful communication is still possible?

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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.

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false