You are driving on a two-way street, and are looking for a place to park; You can park anywhere there is enough room for your vehicle.
You must only park in parking spaces marked by painted white lines on the roadway.
You must always park on the right side of the roadway, facing the same direction as traffic.

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.