Determine the net power required
A refrigeration cycle operates continuously and removes energy from the refrigerated space at a rate of 12,000 Btu/h. The coefficient of performance is 2.6. Determine the net power required (hp).
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Determine the slab thickness 2L required to transfer a total amount of energy such that Q/Qo = 0.90 over a t= 8-h period. The initial concrete temperature is Ti=40 degrees celcius.
Complete blank on how to get the answer for this question, almost done with the class and am surprised I'm still having trouble. Prepare an analysis showing what the impact will be on the company's profits if this tour is discontinued.
Elongation measurements are made on 10 pieces of steel, five of which were treated with Method A (aluminum plus calcium) and the remaining five with Method B (aluminum only). It is conjectured that the addition of calcium will improve elongations
A 1.0cm -tall candle flame is 2.0m from a wall. You happen to have a lens with a focal length of 42cm . (a) How many places can you put the lens to form a well-focused image of the candle flame on the wall?
As expected, since I am having difficulty with the first part of this question it is assumed I will have a problem with the next part.The company's tour director has been criticized because only about 50%.
A human gene carries a certain disease from a mother to her child with a probability rate of 0.58. That is, there is a 58% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has five children. Assume that
For the refrigerant as the system, W= -0.56 Btu. Kinetic and potential energy effects are negligible. Determine the final temperature in Degrees F.
A slide projector needs to create a 98-cm-high image of a 2.0-cm-tall slide. The screen is 300cm from the slide. Assume that the projector has a thin lens. (a) What focal length does the lens need? (b) How far should you place the lens from the s
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