A fluid at 100 psia, with a specific volume of 4ft³/lb and a velocity of 600 ft/s, enters a device. Heat loss from the device by radiation is 10 BTU/b. The work done by the fluid is 200 BTU/b. The fluid exits at 20 psia, 15 ft³lb and 1100 ft/s. Determine the change in specific internal energy. Note: The inlet port is higher by 800 feet than the outlet port. Answer: _BTU/lb

QV: a hydraulic press is used to compact powdered samples. The device is made of two interconnected cylindrical chambers filled with oil if density psubscripto anc closed by two pistons. The small chamber on the right has diameter d and the large chamber on the left has diameter 5d. A lever is attached to the piston pushing down on the fluid in the small cylinder. The horizontal lever is hinged on the left, at distance L from the small piston, and a force of magnitude Fsubscript0 is applied vertically down at distance 2L from the hinge (Fig.5). You may assume that the lever and pistons have negligible mass.  a. Determine the magnitude of the force Fin that the small piston exerts on the fluid in the small cylinder. Hint: you may consider that the lever is at rest in the horizontal position. b. Determine the pressure change applied to the fluid by the small piston. c. Determine the magnitude Fout of the force that the fluid applies to the large piston.