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1. Argon in a light bulb is at 110 kPa, 90?C. The light is turned off, so the argon cools to the ambient temperature of 20?C. Disregard the glass and any other mass and find the specific entropy generation.
2. A rigid tank contains 2 kg air at 200 kPa and ambient temperature, 20?C. An electric current now passes through a resistor inside the tank. After a total of 100 kJ of electrical work has crossed the boundary, the air temperature inside is 80?C. Is this possible?
A first order reaction occurs in a PFR at the rate of 2.1 hr^-1. The reactor volume is 1400L and flow is 15 gpm. If the influent concentration is 200 mg/L, then what is the effluent concentration
A piston-cylinder device initially contains 1.4 kg saturatedliquid water at 200 C. Now heat is transferred to the wateruntil the volume quadruples, and the cylinder contains saturatedvapor only
Study the ASCE Code of Ethics (e) and then provide one example of a hypothetical decision made by an engineer in professional practice that: violates each one of the 7 Fundamental Canons.
If the temperature of the flashlight increases to 120oF, does the spring force increase or decrease and by how much. Take the casing wall to have an outer diameter of 1.5 in., thickness 0.125in.,length L = 3 in., and elastic modulus of 300ksi.
A gray silty clay (CL) is sampled from a depth of 12.5 feet. The "moist" soil was extruded ffrom a 6-inch high brass liner with an inside diameter of 2.83 inches and weighed 777 grams.
The maximum stress is the same in both tension and compression. The endurance limits or fatigue strengths for several candidate materials are shown below. Design the shaft, including an appropriate material, and justify your solution.
Find the magnitude of the velocity and acceleration for the point having the coordinates (3,4). Specify units in terms of L and T.
Describe a piece of John Deere agricultural equipment that utilizes GPS hardware and software. Describe how many RECs are placed on the equipment and where it is placed.
Write a program that processes a sequence of lines from a file, displaying a count of the total number of words in those lines as well as counts of words with one letter two letters,and so on .
A rigid-walled cubical container is completely filled with water at 40 0F and sealed. The water is then heated to 100 0F. Determine the pressure that develops in the container when the water reaches this higher temperature
Define and calculate the mass, stiffness, spectral and modal matrices of the frame with and without the braces.
If the temperature of the balls after quenching is 74°C, determine the rate at which heat needs to be removed from the water in order to keep its temperature constant at 50°C.
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