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Oxygen at 450K is heated to 850K. Assume oxygen as an ideal gas. Determine the change in internal energy and enthalpy of oxygen per unit mass, using:
A) Data for line over u and line over h from the oxygen table (Method 1)
B) Average specific heat values (Method 2)
the lower end of the 30 kg slender rod is displaced a small amount and released from the rest. determine the natural frequency of vibration. the springs have stiffness of 500 N/m and they are stretched when the rod is hanging vertically.
in a piston cylinder assembly refrigerant 134a undergoes a constant pressure process from saturated vapor at 8 bar to
an air-standard cycle with variable specific heats is executed in a closed system and is composed of the following four
the crate slides down the section of the spiral ramp such that r 0.5z ft and z 100 - 0.1t2 ft where t is in seconds.
During a lab demonstration, two thermocouples were made by using copper-constantan wires. The junction diameter of one thermocouple is 1 mm, while the other is 0.2 mm. Initially, both thermocouples were held in a constant-temperature environment and ..
in the absence of stress the center-to-center atomic separation distance of two al atoms is 0.286 nm. under a tensile
Determine the resulting stress equations for σx, σy and τxy given the Airy's stress function ? = a1x^4 + a2(x^3)y + a3(x^2)(y^2) + a4x(y^3) + a5(y^4), where ai are constants. Also determine, if any, the restrictions between constants.
In the wind tunnel experiment, four wall taps are used to measure pressure. Are those wall taps used to measure pressure of the air very close to the wall surface? What is the velocity of air close to the wall surface? Are the wall taps used to measu..
problem 110degc water is flowing in a 10-mm diameter smooth tube. the mass flow rate of the water is 0.15 kgs. the
Two kg water at 120C with a quality of 25% has its temperature raised 20C in a constant volume process. What are the heat transfer and work in the process?
You need to hydrolyze 500 lb/day of an ester at an initial concentration of 5 molar in basic, aqueous solution. The ester has a MW of 120. The product must be 99% hydrolyzed. In bench top experiments at 40C, it is found that 50% of the ester hydrolyz..
liquid oxygen is stored in a thin-walled spherical container 0.8 m in diameter which is enclosed within a second
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