150 lb of force is applied at the end of a shaft that is 2 1/2 ft long. It is applied

at an angle of 90° to the lever. How much torque is produced? If the shaft is

rotating at 350 rpm, what is the power?

ferry boat steamed along at 8 mph through calm seas, passenger casey exercised by walking the perimeter of the rectangular deck, at a steady 4 mph. Discuss the variations in casey's speed relative to the water.

In fully-developed laminar pipe flow, consider the rate of work done on an annulus of thickness dr (hint: consider, for each face of the annulus, rate of work = power = force * velocity).

Which statement is not correct regarding the deformation of a circular shaft in torsion? a. Cross sections remain flat. b. Longitudinal lines remain straight. c. Circular sections remain circular. d. Radial lines on the sections remain straight.

Internal flow is one in which the flow is not bounded. a) True b) False

Air at 1 atm enters a thin-walled (5-mm diameter) long tube (2 m) at an inlet temperature of 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is 140 * 10-6 kg/s.

A completely reversible heat pump produces heat at a rate of 100 kW to warm a house maintained at 25℃. The exterior air, which is at 0℃, serves as the source.

A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate.

A scientist who is evaluating an ancient human skeleton for signs of vitamin and nutrient deficiency is conducting:

Which of the following is required in order to make a protected left turn A. A left green arrow B. No oncoming traffic C. A left turn only lane D. A large enough gap

At steady state, a cycle develops a power output of 10 kW for heat addition at a rate of 10 kJ per cycle of operation from a source at 1500 K. Energy is rejected by heat transfer to cooling water at 300 K.