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A cable is placed around three parallel pipes. Knowing that the coefficients of friction are ms 5 0.25 and µk = 0.20, determine
(a) the smallest weight W for which equilibrium is maintained,
(b) the largest weight W that can be raised if pipe B is slowly rotated counterclockwise while pipes A and C remain fixed
Determine the ratio of plastic to metal tube surface areas needed to transfer the same amount of heat. Determine the ratio of plastic to metal mass associ- ated with the two heat exchanger designs.
a mercury-in-glass thermometer has 12 gram of mercury in bulb. the design requires that if temperature increases by
Question 1.What is one-hot state assignment and what advantages does it have?
five kilograms of water initially a saturated vapor at 100 kpa is cooled to saturated liquid while the pressure is
1 a nuclear power plant reactor operates at 3612 mwth. in the winter the plant is able to achieve an electrical output
Nan crystalline materials have grain sizes ranging from 0.01 to 0.1 microns. If the contribution of grain boundary strengthening in an alloy with grains of 0.1 microns is 20 MPa, what would you expect it to be if the grain size were reduced to 0.01 m..
A conical wedge is placed between two horizontal plates that are then slowly moved toward each other. Indicate what will happen to the wedge, If µs = 0.20,
a 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 w. determine the final temperature of the room
steam in a piston cylinder assembly undergoes a polytropic process with n2 from an initial state of p500 psi v11.7
a 12-mm diameter jet of water discharges vertically into the atmosphere. due to surface tension the pressure inside the
air enters a tank through an area of 0.2 ft2 with a velocity of 15 fts and a density of 0.03 slugft3. air leaves with a
a system that operates in a reversible cycle receives energy by heat transfer from a 24.8oc reservoir at a rate of 25.5
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