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If the cooling water enters at 85F (30C) and leaves at 104F (40C) what is the mass flow rate of the cooling water? Assume that the water is a compressed liquid at 30 psia (205 kPa).
Consider a large 3 cm thick stainless steel in which heat is generated uniformly at a rate of 5*10^6 W/m3. Assuming the plate is losing heat from both sides.
An aluminum polycrystalline specimen is elastically compressed in plane strain. If the true strain along the compression direction is -2 times 10-4. what are the other two longitudinal strains?
The initial specific volume is 0.20 (m^3/kg). For the gas as the system, the work is -15 kJ. Determine the final volume of the gas in (m^3). Is the process one of expansion or compression?
Consider intermediate compression to be ideal and perfect intercooling. The compressor runs at 600 RPM. The index of compression is 1.25. Find the intermediate pressure.
If the scale graduations were printed on the tape under zero load and at the same temperature as the measurement is made (20°C), what value will it read (measure) for the actual length of 100.00
Find the maximum values of velocity and acceleration, and the angles at which these maximum values occur during the rise. (hint: cos2x=2cos^2x-1 and sin2x=2sinxcosx). Solve using calculus.
The directions respectively normal and tangential to the weld are s 5 12 ksi and t 5 7.2 ksi, determine the magnitude P of the largest axial force that can be applied to the pipe.
If a new car comes equipped with 0.1-kg of the nuclear fuel U-235, determine if this car will ever need refueling under average driving conditions.
What are the minimum needed launch angle and the corresponding total time of flight. Use base equations v=dr/dt and a=dv/dt and derive equations.
Find the apparent rates of pollution concentration(in ppm/h) if the boat is headed upstream or downstream and cruises at 8 mi/h relative to the water. reapeat the case where the boat is just driftin
A velocity field is given by V = (2XY)i + (X^2)j. Find the accelaration Dv/Dt, and use the euler equation to find the pressure gradient vector.
When placed in an aqueous solution, the block of material floats with 1 in. below the surface. Estimate the specific gravities of the block and the solution.
A fluid film of 0.2 mm thick separates the cube and the plane surface with a contact area of 0.2m^2 . If the fluid viscosity is 0.04 N.s/m^2 , the terminal speed of the sliding cube is?
Determine (a) the work developed by the turbine, in kJ per kg or air folwing, and (b) the temperature at the exit, in K. Ignore kinetic and potential energy effects.
How long did the electric heating system run that night? How long would the electric heater have run that night if the house incorporated no solar heating?
Determine the constants in the Hall-Petch equation and the strength of the titanium alloy when the grain size is reduced to 0.2 x 10-6 m.
Estimate the specific molar volume(s) in cm^3/mol using the Peng-Robinson equation of state for nitric oxide at 150 K temperature and 7.5 bar pressure.
Derive the initial value problem that models B's position on the axis as a function of t (define the Differential Equation and Initial Condition).
A spherical balloon with a diameter of 6 m is filled with helium at 20°C and 200 kPa (absolute). Determine the number of moles of helium and the mass of the helium in the balloon.
Estimate the max. force required for extruding a cylindrical Al billet of 50mm dia and 75 cm long to a final dfiamter of 10 mm. The average tensile yield stress for Al is 170N/mm2.
If the body is released downward from rest at a very high altitude determine the velocity when t=3. Determine the bodys terminal or maximum attainable velocity as ( t goes to infinity).
Determine the magnitude of P if 10 s is required for the package to travel 5 m up the incline. The static and kinetic coefficients of friction between the package and the incline are both equal to 0
Convection coefficient 100 W/m2.K. for both surfaces. If the heater dissipates 10 kW/m² under normal conditions, what is the temperature of the lower plate surface?
A 10-kg mass of R-134a at 1.2 MPA and 70 C is cooled at constant pressure until it reaches a temperature of 20 C. Determine the states at points 1 and 2. Show the process on a T-v diagram with respect