Awell is producing from a confined aquifer under steady state condition. an observation well 100ft from the pumping well shows a drawdown of 5 ft, while an observation well 20ft from the pumping well shows a drawdown of 16ft. what is the drawdown at the pumping well of radius 8 inches? if the well produces 20ft3/min, what is the transmissivity of the aquifer?

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.