Preheating air by steam for use in a dryer. an air stream at 32.2°c is to be used in a dryer and is first preheated in a steam heater, where it is heated to 65.5°c. the air flow is 1000 kg mol/h. the steam enters the heater saturated at 148.9°c, is condensed and cooled, and leaves as a liquid at 137.8°c. calculate the amount of steam used in kg/h.

What is the role of the ocular lens?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.