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A 50-mm-diameter, thin-walled metal pipe covered with a 25-mm-thick layer of insulation (0.085 W/m·K) and carrying superheated steam at atmospheric pressure is suspended from the ceiling of a large room. The steam temperature entering the pipe is 120°C, and the air temperature is 20°C. The convection heat transfer coefficient on the outer surface of the covered pipe is 10 W/m2 ·K. If the velocity of the steam is 10 m/s, at what point along the pipe will the steam begin condensing?
The boom OA carries a load P and is supported by two cables as shown. Knowing that the tension in cable AB is 183 lb and that the resultant of the load P and of the forces exerted at A by the two cables must be directed along OA, determine the tensio..
Owing to safety requirements, the pressure within a 19.3 ft3 cylinder should not exceed 52 atm. Check the pressure within the cylinder if filled with 100 lb of CO2 maintained at 2128F using the
a cylinder fitted with a piston contains 5 lbm of saturated liquid water at 300 lbfin2. heat is slowly transferred to
a liquid at 10 c kinematic viscosity of 1.30710-6 m2s is to flow from a roof-top reservoir to a tanker truck through a
the presence of raindrops in the air during a heavy rainstorm increases the average density of the air-water mixture.
a hydraulic cylinder must be able to exert a force of 45.5 kn. The piston diameter is 65 mm. Compute the required pressure in the oil
Prepare a 3-input, 5 bit multiplexer that fits in a 24-pin IC package. Write the truth table and draw a logic diagram and logic symbol for the multiplexer.
a tank has two rooms separated by a membrane. room a has 1 kg air and volume 0.5 m3 room b has 0.75 m3 air with density
How do the magnitudes of the biceps force B and joint reaction J change if the total weight w of the forearm and hand are included in the analysis and are assumed to act at the midpoint of the forearm?
A causal discrete-time LTI system is described by y [ n ) - h [ n - 1) + !Y [ n - 2) = x [ n ) where x[ n ] and y[ n ] are the input and output of the system, respectively.
Why is it often difficult to evaluate the elastic limit. What is the effect of poor alignment of the specimen. Why does a specimen that is properly aligned provide a more accurate estimate of the tensile strength compared to the estimate provided f..
in an ideal brayton cycle with regeneration air is compressed from 80 kpa and 10degc to 400 kpa and 180degc. it is then
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