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Sketch the T-s and P-v diagrams and calculate the work and the irreversibility for this process. (Assume To=25oC, Po=100 KPa)
If the probe surface has an emissivity of 0.85 and the probe does not receive radiation from other surfaces, as , for example, forom the sun, what is its surface temperature?
What is the rate of heat loss from the steam line? If the steam is generated in gas-fired boiler operating at an efficiency of 0.90 and natural gas is priced at Cg=$0.02 per MJ, what is the annual c
With the present 70% capaciy production, what is the expected annual profit or loss for the susidiary plant? What annual volume of sales (units) is required in order for the plant to break even?
The muddy surface on which the car's tires rest exerts negligible friction forces on them. What is the tension in the tow cable?
What is the outlet temperature and velocity of the gas? assume air is an ideal gas with a temperature independant Cp=7R/2 and the average molecular weight of air is 28.8.
Calculate the cross sectional area in mm2. Calculate the cross sectional area in cm2. Calculate the cross sectional area in m2.
The limb of a manometer is inclined at 12 0 to the horizontal. If the water column along the tube is 250 mm , what is the magnitude of the gauge pressure being measured?
Find the enthalpies and entropies at each point around a simple Rankine cycle. Assume that prior to entering the pump, the water is a saturated liquid at a pressure of 8 kPa.
Find T2, P2, and W (work in Btu) for this process: (a) assuming constant specific heat ideal gas with cp = 0.24 Btu/lbm-R, cv = 0.171 Btu/lbm-R and k = 1.4.
the top of the tube represents 0 lbf/in2 absolute, then at an atmospheric pressure of 14.696 psia, what is the height of the tube in feet?
Calculate the mass in kg of oxygen that has been released from the tank. A team is designing a helium-filled balloon that will fly to an altitude of 7 km.
Calculate the final stress in the bar and the cylinder if E(steel)= 200,000 N/mm^2, E(aluminum)= 80,000 N/mm^2, coefficient of linear expansion for steel= 0.0000012/C.
Determine the bore diameter on the seat. What will the spring force be if a pressure of 32 bar is acting on diameter of 10 mm seating area?
Determine the steady-state molar flux of the ethanol and the concentration profile as a function of the position z within the liquid film.
Develop the transfer functions of the system relating the MV to the PV and the DV to the PV. Draw a block diagram of the overall system.
A Knoop microhardness measurement was made on a sample that resulted in a KHN of 481when a load of 5120 kg was applied. Calculate the cross-sectional area of the pyramid head.
Determine the moles of CO that are produced at the surface of the rod per second at the time when the diameter of the rod is 1.0 cm.
What reasonable assumptions were used in your simplifying of the general differential equation. Simplify Fick's equation for the drug species and obtain a differential equation in terms of concentra
What is the minimum speed (speedometer reading) you must attain at take off to insure that you land safely on the opposite side of the chasm.
The block is sitting on smooth vinyl surface with an 0.2 coefficient of kinetic friction. The ball hits the mitt and is retained in the mitt. How far will the mitt and wood block slide before comin
An automobile traveling at 30 miles per hour on level pavement with a coefficient of kinetic friction of 0.6. Calculate the braking distance if all brakes are working?
In order to reduce the stress and the angle of twist , 1.25 cm thick flat plates are welded onto the sides of the section as shown by dotted lines Find the maximum shear stress and the angle of twis