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The boiler pressure is 3.0 MPa and the cycle has a high temperature of 450 °C and its low temperature is 45 °C. Find the plant's thermal efficiency.
An aqueous ester hydrolysis reaction A -> B + C has k = 0.02 min-1 and an equilibrium constant of 10 with all concentrations in moles/liter. What is the reverse rate constant in the above reaction?
Based upon a comparison of the calculated and measured average temperatures, which planet is most affected by radiation transfer in its atmosphere?
The upper half of the container holds steam (of density 5kg/m^3) while the lower half contains water (of density 1000 kg/m^3). What fraction of the overall mass is steam?
A 20 mm diameter steel bar is to be used as a torsion spring. If the torsional stress in the bar is not to exceed 100 MPa when one end is twisted through an angle of 15degree, what must be the leng
What is the total moment M due to the force about point O? Assume that moments acting counterclockwise about point O are positive whereas moments acting clockwise are negative.
What is the initial mass of LIQUID water? If piston hits stops, what is its temp and pressure, at that instant? If it does not hit the stops, what is the final volume?
Calculate the span of a differential pressure transmitter that is mounted 10 inches below the bottom instrument tap on an open process tank that contains a liquid with a specific gravity of 1.1.
1.7 pound-mass of water fills a container whose volume is 3.7ft³. The pressure in the container is 70 psia. How do you calculate the total internal energy and enthalpy in the container?
Find the force required to pull the block. Assume the velocity distribution in the oil film is linear. The surface is inclined at an angle of 25º from the horizontal.
The process begins with p1=250 kPa and v1=1.5m^3 and ends with p2=100kPa. Determine the final specific volume in m^3/kg. Plot the process on graph of pressure versus specific volume.
Accounting for the variation of specific heats,according to temperature determine the air temperature at the compressor exit, the back work ratio and the thermal efficiency.
Then calculate the annual cost to operate a 60-W, 75-W, and 100-W incandescent bulb and a 15-W compact fluorescent bulb. Assuming the average household operates six 60-W, four 75-W.
What is the maximum pressure (gauge) of the pressurized gas that the pipe can carry before the mercury spills out the open end the manometer?
The allowable stress in tension is epsillon allow=17000psi and the elongation of the bar must not exceed 0.04 in. what is the allowable value of the forces p?
Suppose that you can change the direction of F while keeping its magnitude constant, and you want to choose a direction that maximizes the moment of F about A. What is the magnitude of the resulting
The liquid in the manometer has specific gravity of 0.8. Find the absolute pressure of the gas in the pipe (in kPa) if atmospheric pressure is 760 mm of Hg.
What would be the concentration of SO2 in the stack gas if no pollution control equipment is used? Calculate your result on both a mass (g/m3) and volume (ppm) basis.
Using the appropriate form of the heat equation, derive an expression for the x-dependence of the steady-state heat flux qdoubleprime(x)
The gap width is G mm and the inner cylinder radius is R mm. Determine the shear rate and the shear stress in the blood if the angular velocity of the outed cylinder is 60rpm.
Given the initial volume is 10 ft^3 and a system expands to 20 ft^3, and the system has an initial pressure of 14.7 psi and an initial temperature of 75 F. Find the work done given the ideal gas la
The disk has angular velocity of .1 rad/s at t=0 and constant angular acceleration 2 rad/s^2. Determine velocity and acceleration of point A in terms of i and j vectors at time t=1s.
Estimate by what percent the average air-water density is greater that that of just still air. State all assumptions and show calculations.
Find the work done if the system is at the initial temperature of 75oF and the pressure between the final state is (a) constant, (b) inversely proportional to volume and (c) given by the ideal gas r