An experimentalist has measured the u-velocity component of a steady, two-dimensional flow field. it is approximated by = 3xy + x + 10 it is also known that the v-velocity is zero along the line y=0.
a) (3 points) find an expression for the v-velocity in the entire field
b) (3 points) find an expression for the streamfunction, , for this flow
c) (4 points)determine the location of any stagnation points in the flow (stagnation means vr=0)
d) calculate the acceleration field (ax and ay) for this flow field.

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.