A pump is connected to an electric motor. The motor is supplied with 2 A of current from a 12 VDC source (VDC = direct current volts). The apparatus is run steadily for 60 seconds, and the following measurements are recorded: • mass of fluid collected: 750 grams (0.75 kg) • diameter of exit tube: 0.5 inch (0.0127 m) • density of water: 1000 kg/m3 • height of fluid exit above reservoir: 36 inches (0.9144 m) • remember that g=9.81 m/s2 (g is the gravitational constant … you need this to find weight!)

Find:

a) the weight of the fluid collected

b) fluid velocity at exit in m/s (meters per second)

c) flow rate in L/min (1 liter = 0.001 m3)

d) system efficiency (express as a percentage)