If 5.0 cubic metres/second of air enters a heating coil at 20 degrees C dry-bulb and 15 degrees C wet-bulb, and leaves the heating coil at 30 degrees C dry-bulb, what is the mass of air flowing?
a) 5.94 kg/sec
b) 6.84 kg/sec
c) 5.0 kg/sec
d) 6.2 kg/sec
e) 5.4 kg/sec
Answer: A