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An air-conditioning system is used to maintain a house at 75°F when the temperature outside is 95°F. The house is gaining heat through the walls and the windows at a rate of 800 Btu/min, and the heat generation rate within the house from people, lights, and appliances amounts to 100 Btu/min. Determine the minimum power input required for this air-conditioning system.
a very thin copper plate coated with carbon black exchanges radiant energy with a blackbody plate at 1000 degree c. its
A closed system consisting of 8.25 lb of a gas undergoes a process during which the relation between pressure and volume is pV^n = constant. The process begins with p1 = 18 lbf/in^2 , v1 = 1.25 ft^3 /lb and ends with p2 = 53 lbf/in^2 , v2 = 0.5 ft^3 ..
a three-span continuous beam abcd with three equal spans supports a uniform load of intensity q. determine all
a four stoke eight cylinder otto engine operates at 2500 rpm and the compression ratio is 61. the cylinder volume is
given that the instantaneous voltage across a capacitor isvc401-e-tcrvoltswhen being chargerd by a 40 volt dc supply
Half a kilogram of nitrogen, initially at 350K and 200Kpa is compressed through a poly tropic process with pv^1.4= constant. If the final temperature is measured to be 400K, find the work in the process.
Assume the vessel contains 1 mole of O2when there is no dissociation. Calculate mole fraction of O2 and O for the following conditions. Comment on how pressure and temperature impacts equilibrium composition and if the changes are consistent with Pri..
in each case calculate the biot number for the object and indicate whether or not the lumped approximation is valid.a a
Write a minimum three-page paperusing APA formatting, and include in-text citations and reference page
an air intake duct has a 14x14 opening the duct is 18 long with an exaust opening at the other end that is 14x1 giving
a circular sheet metal duct carries refrigerated air to a cold storage room for apples. the duct itself is 200 mm in
the 50-kg homogeneous smooth sphere rest on the 30 degree incline A and bears against the smooth vertical wall B. calculate the contact forces at A and B.
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