1. Powerdrill
Washing Machine
TV
Power rating 500
425
180
Look at the table above. How much higher is the power rating of the powerdrill than the TV?
320
2. Look at the table from question 1 again. What unit would you use for the values? Give the full
name, not the abbreviation.
Click or tap here to enter text.

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2