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The compressed liquid water enters the desuperheater at 5MPa, 40 degrees centigrade. Water exits the desuperheater as 4.5Mpa saturated vapor. Find the required mass flow rate of the compressed liq
A ship's hull is 150m long as has a wetted area of 5000 m^2. When it is encrusted with barnacles, it requires 7000 hp to overcome friction drag and move at 15 knots in seawater at 20C. What is the a
The heat transfer from the compressor to the surroundings is 0.63 kW. Include the change in the kinetic energy of the R-134a and compute the power input needed to operate the compressor.
The centerboard of a sailboat is 2.5m long and has a chord of 1m. Approximate the centerboard as a flat plate in water at 20C to compute the drag when the boat sails at 15 knots.
The thin-walled pipe has an inner diameter of 0.5 cm and a thickness of 0.025 cm. If it is subjected to an internal pressure of 5 MPa and the axial tension (200 N) and torsional loadings (2 N.m) sho
The pressure at the exit of the turbine is 10 kPa, and the turbine operates adiabatically. Liquid leaves the condenser at 8 kPa, 36oC. The pressure is increased to 8.6 MPa across the pump. The turbi
A circular steel bar is axially loaded. It has a diameter of 2 in., a modulus of elasticity of 29x10^3ksi. When the load F is applied, determine load F.
Nitrogen gas enters a diffuser at 100 kPa and 110 degrees C with a velocity of 205 m/s and leaves at a 110 kpa and 45 m/s. It is estimated that 2.5 kJ/kg of heat is lost from the diffuser to the sur
A piston cylinder device initially contains 0.6 kg of steam with a volume of 0.1 m3. The mass of the piston is such that it maintains a constant pressure of 800 kPa.
What frequency does the changing voltage (AC voltage) across the gap need to have in order to match up with the protons and ensure they are accelerated each time they encounter the gap.
The suspension of an automobile can be approximately by the simplified spring-dashpot determine and plot the amplitude system.
A four-cylinder engine with a 9.5-cm bore and an 8.75-cm stroke has a 7 % clearance. The engine rotates at 2500 rpm. The conditions at the beginning of compression are 17 celsius degrees and 98 kPa.
The initial pressure is 39kPa and the initial temperature is 15 deg celcius. Find the final temperature, pressure of the gas and find the work done to compress the gas.
Express p in terms of F,D, and Poisson's ration v for the rubber. What is the apparent modulus of elasticity (sigmay/epsilony) in terms of the modulus of elasticity E and Poisson's ratio of rubber?
A circular shaft of diameter D rotates at a speed N and is supported by a journey bearing with clearance C. the viscosity of the lubricant is m and the bearing pressure is P.
Find: The compressibility factor using a) the generalized compressibility chart and b) data from the steam tables. Comment on the difference.
The motion of the upper surface is suddenly stopped at time t=0. Obtain an expression for the subsequent velocity distribution between the two parallel surfaces.
The water in A is cooled to maintain its initial temperature. Find the change in temperature of the water in B and its final volume. please show all work.
Geothermal energy systems extract heat that is stored below the Earth's crust. For every 300 ft below ground, the temperature of the groundwater increases by about 5 ºF.
As the container expands, the pressure increases by a factor of 2.15. If the initial temperature is 392 Celcius what is the final temperature in Celcius?
Finally, the air is isochorically cooled, returning to its initia state. Find the net work produced by this cycle, assuming the air behaves as an ideal gas.
A university's campus has 20,000 computers with cathode-ray tube monitors that are powered-up even when the computer is not being used. This type of monitor is relatively inefficient, and it draws m
A given liquid has a temperature 178 Celcius at a pressure of 47 MPa. What is the approximate enthalpy of the liquid?
A printing pigment solution having a viscosity of 0.05 N s /m2 and the yield stress of 0.6 N/m2 flows in a three meter tube which has a diameter of 0.015 m.
A flame that produces 10kW of heat output is applied to one side of a 10cm by 10cm square of aluminum foil. The other side of the foil is subjected to boiling water at 100oC. If the foil is 0.5mm th