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Refrigerant 134a at a pressure of 0.8 MPA and a temperature of 50 C undergoes a process until the pressure is 0.1 MPA and the specific volume is 0.15 m^3/kg.
Assume that the dissolved oxygen concentration in media ( that is flowing over the cells) is 0.2 mmol/litter of media. What volume of fluid must be pumped into device per second?
Determine the maximum theoretical speed that may be achieved over a distance of 360ft by a car of weight W starting from rest assuming there is no slipping.
If the inside diameter is 40 in., the wall thickness is 3/8 in., and the internal pressure is 180 psi, what would be the readings for strain A, strain B, and strian C (Ea, Eb, Ec).
Determine the maximum span, Lmax, of a simply supported log beam that must support a uniformly distributed load w (including beam weight) without exceeding the allowable shear stress, Tallow.
The diameter of the ball is 2.001 cm and the inner diameter of the ring is 2.000 cm. At what temperature does the ball just fit through the ring?
The pressure at the nozzle exit at 0.5mpa. Calculate the heat transfer per unit mass during the expansion if the exit temperature is 50 degrees Celsius.
The drive sprocket has 19 teeth and the sprocket on the mixer has 84 teeth. Determine the speed of the drive sprocket, the chain speed, and the recommended lubrication method.
It has been determined that a point in a load-carrying member is subjected to the following stress condition. Draw complete maximum shear stress element.
What maximum load can the member take before buckling would be expected? b. Also compute the allowable load on the column for a design factor of 3.
Assume constant specific heats where Cwater = 4.179 kJ/kg-K and CCu = 0.385 kJ/kg-K. Determine the total entropy production (kJ/K) after one hour assuming thermal equilibrium is achieved.
Determine the stream ecomomy of the system. Assume that the specific heat of the solids is 3000 J/kg K and that of water is 4,180 J/kg K.
Determine the time taken for the product to freeze if it is at its initial freezing point when it was placed in the blast freezer.
Assume constant specific heats where Cwater = 4.179 kJ/kg-K and CCu = 0.385 kJ/kg-K. Determine the final equilibrium temperature (K).
A piston-and-cylinder device contains 10 kmol of n-pentane at -35.5 C and 100 bar. How much heat must be supplied for the process to be isothermal?
During the expansion some of the water evaporates, but no heat is transferred to the cylinder. Find the temperature, pressure, and amounts of vapor, liquid, and solid water present after the expansi
Find the flow rate of air if the manometer reading is 271 mm, the relative density of alcohol is 0.8, Cd for the orifice is 0.602 and the atmospheric temperature.
You are blanking a square using a straight edge punch. If the punch is angled to be at a shear angle of 10 degrees, how much would the force be decreased?
Determine the cutoff ratio rc. Find the temperature at the end of each process of the cycle. Evaluate the efficiency of the cycle.
A hydraulic cylinder has a piston of cross sectional area, 45cm2, and a constant working fluid pressure of 2.2MPa. What is the volume displacement of the piston?
A mercury barometer in the room shows a pressure equal to a height of column of mercury of 760mm and a thermometer in the room shows a temperature of 18oC. What is the temperature of the air in the
Calibrated vibrometer output indicates a velocity amplitude (1/2 peak-to-peak) of 3.8 mm/s. Determine (a) the displacement amplitude in mm and (b) the acceleration amplitude in standard g's.
If the compressor consumes 400 W of power and the COP the refrigerator is 2.2, determine (a) the mass flow rate of the refrigerant and (b) the rate of heat rejected to the kitchen air.
Find the height of stack, in feet, necessary for a driving pressure of 0.1 psia if the outside air is at 50 degree F and the percent change in gas flow if the outside air temperature changes m 60 de
Show that the moment of inertia of a particle of mass m rotating about some point O at a distance R with and angular speed w is Io = mR^2.