Air enters a 16-cm-diameter pipe steadily at 200 kPa and 20โC with a velocity of 5 m/s. Air is heated as it flows, and it leaves the pipe at 180 kPa and 40โC. Determine
(a) the volume flow rate of air at the inlet,
(b) the mass flow rate of air, and
(c) the velocity and volume flow rate at the exit.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery