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Engineering
Johnathon Atkinson
A piston-cylinder device contains 0.1 [kg] of air at a pressure of 100 [kPa] and a temperature of 400 [K] that undergoes an expansion process. The volume of the piston-cylinder device expands from 1 [m3 ] to 3 [m3 ] at a constant pressure of 2,000 [kPa]. Then, as the piston-cylinder device expands from 3 [m3 ] to 5 [m3 ], the pressure linearly decreases from 2,000 to 1,000 [kPa]. (a) Determine the heat input. (b) Determine the work for the overall process
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Engineering
Aliana Miles
What is a U-Groove welding
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Engineering
Madison Burch
g A primary sedimentation basin is designed for an average flow of 0.3 m3/s. The TSS concentration in the influent is 240 mg/L. The average solids removal efficiency of the basin is 60 percent. The sludge has an average solids concentration of 4 percent and a specific gravity of 1.025. Calculate (a) the quantity and volume of sludge produced, (b) the effluent flow rate, and (c) the pump cycle time if the pumping rate is 570 L/min.
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Engineering
Gilmore
What is the reason for the development of new construction of materials for human use? (Select all that apply.)
Resistance to chance.
Security of essential structures
Luxury of finished product
Increase in quality life
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Engineering
Saige Vargas
In class we learned that in order to uniquely identify one of N equally likely symbols, ceiling (〖log〗_2 N) bits of information must be communicated. Answer the questions below:
(a) How many bits are necessary to encode an integer in the range of 0 to 512 (inclusive) ?
(b) It must require 10 bits at least, not 9, because 2^9 = 512, however this is inclusive so it is actually 513 numbers and therefore 10 bits. How many bits are necessary to encode an integer in the range of 0 to 75 (inclusive) ?
(c) It would require at least 7 bits. 2^6 = 64 which is not enough, so it must be 2^7 = 128 bits. How many bits are necessary to encode an integer in the range of - 20 to 13 (inclusive) ?
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Engineering
Justice Casey
Explain polygon law of vector. Derive an expression for resultant vector
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Engineering
Shyla Hammond
The value of h is usually much lower at the fin tip than it is at the fin base. a) - True b) - False
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Engineering
Delaney Salazar
Psychologist who uses behavioral approach to therapy would probably try which of the following
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Engineering
Schneider
In a manufacturing facility, 2-in-diameter brass balls (k = 64.1 Btu/h·ft·°F, rho = 532 lbm/ft^3, and cp = 0.092 Btu/lbm·°F) initially at 360°F are quenched in a water bath at 120°F for a period of 2 min at a rate of 120 balls per minute. The convection heat transfer coefficient is 42 Btu/h·ft^2·°F. Take I to be the initial temperature. Determine:
a. The temperature of the balls after quenching.
b. The rate at which heat needs to be removed from the water in order to keep its temperature constant at 1200F.
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Engineering
Beatrice Carroll
Question 10
Which of the listed components provides the most resistance to
wheel rotation on a hybrid during normal braking?
OA) Front brakes
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Engineering
Waylon Vega
A composite wall is to be used to insulate a freezer chamber at - 350C. Two insulating materials are to be used with conductivities of 0.04 W/mK and 0.1 W/mK. If the outside surface temperature of the inner layer (0.04 W/mK) should not go below zero and if the exposed surface temperature should not go below (the expected wet bulb temperature) 220C determine the insulation thicknesses. The heat gain is to be limited to 10 W/m^2. Also estimate the value of convection coefficient at such a situation. Outside is at 250C.
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Engineering
Cash Cline
If an object moves 2 meters to the left in 1 second, what is the velocity of the object?
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Engineering
Skyler Campos
What is the subtotal for the building materials in the bill? The subtotal should be the cost of the materials only. Don't add taxes or subtract any discounts.
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Engineering
Salvatore Becker
Is CO, an air pollutant? How does it differ from other emissions resulting from the combustion of fossil fuels?
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Engineering
Aarav Ward
A gear motor can develop 2 hp when it turns at 450rpm. If the motor turns a solid shaft with a diameter of 1 in., determine the maximum shear stress developed in the shaft. (30 pts)
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