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A compressor operates at steady state with refrigerant R134a as the working fluid. The refrigerant enters at 2.4 bar, 0oC with a volumetric flow of 0.38 m3/min. The diameters of the inlet and exit pipes are 4 and 2 cm , respectively. At the exit, the pressure is 12 bar and the temperature is 50oC. If the magnitude of the heat transfer from the compressor to the surroundings is 5% of the compressor power input, determine the power input, in kW.
Sound Check, a merchandising company specializing in home computer or speakers, budgets its monthly cost of goods sold to equal 70% of sales. Calculate the budgeted merchandise purchases.
A main supply pipe of radius 7.9 mm is connected to two pipes A and B of radii 4.83 mm and 3.40 mm respectively. what is the speed of the water in pipe A
An empty storage tank has a volume of 144 ft3. What is the buoyant force exerted on it by the air
A merry-go-round rotates at 5 rpm and is shaped like a disc with a radius of 3 m and a mass of 100kg. what will be the new rotational speed
A passenger walks from one side of a ferry to the other as it approaches a dock. what are the direction and magnitude of the ferry's velocity relative to the water
Find the period of a child's leg as it swings about the hip joint. Assume the leg is 0.39 m long and can be treated as a uniform rod, Estimate the child's walking speed
A super tanker with the mass of 3.36 × 109 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.11 × 105 N. Determine (a) magnitude of the resistive force exerted on the tanker by the water and (b) magnitude of the upward..
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. What is the fundamental frequency of the canal
The edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. Find the pitch of the micrometer
You are running toward an approaching marching band. You are moving at 9.3 m/s and the band is moving at 2.7 m/s
A small loop of area A=7.4 mm^2 is inside a long solenoid that has n=747 turns/cm, find the amplitude of the emf induced in the loop
Refrigerant-22 enters a turbine at 300 psi, 280°F, 2000 ft3/hr. The exit is at 15 psi, 10°F. Find the mass flow rate
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