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A long duct has a triangular cross-section. The angle between surfaces 1 and 2 is 60deg, and the other two angles are 90deg and 30deg. The width of side 3 is 2 m. all surfaces are black. Surface 1 is insulated and its temperature is maintained at 1050 K. Surface 2 is kept at a constant temperature. The temperature of surface 3 is 680 K. Calculate the rate of heat addition (or removal) needed at surface 2, and find the temperature of this surface. Base your calculations on 1-m length of the duct.
For a steel with the following properties: UTS = 110 ksi, YS = 85 ksi, E = 30x10^6 psi, % elongation 18%, % reduction in aria 38%. If a rectangular bar, 2” x 4” and 16” long is made of steel and subjected to a 560,000-pound load, determine how much i..
A block of metal has a 90 notch cut from its lower surface. The notched part rests on a circular cylinder of diameter 2.0 cm, as shown in Fig. 4.15. If the lower surface of the par is 1.3 cm above the base plane, how deep is the notch?
determine the designe power. An output speed of 175 RPMis specified. Determine: a) number of teeth on the small sprocket, b) number of teeth on the large sprocket, c) lubrication type required, d) the required length of chain (in inches) if the ce..
the bocks sits at rest on the sloping plane. the plane exerts two components of force on the block. the normal
for the following signals 1024 points were sampled.a 621 hz signal sampled at 850 hzb 1072 hz signal sampled at 1600
observing plastic deformationthe aim of this demonstration is to make some observations of the surface relief produced
Briefly explain what is meant by the terms systematic error and random error of a measuring device. Which statistical parameters may be used to quantify these two types of error? State, giving an example, how precision is related to error.
A steel plane of finite dimension and thickness of 13 mm has the initial (uniform) temperature of 35 C. put the plane into the solution in all sudden and the wall temperature is increased to 146 C spontaneously. The thermo diffusivity of the plane, i..
Suppose the force is increased until the entire spring is compressed solid. Neatly sketch a force-deflection diagram for the spring.
1. which has the larger area moment of inertia a 2 x 2 square beam of high strength stainless steel or a 2 x 2 square
the 230000 lb space shuttle orbiter touches down at about 220 mihr. at 200 mihr its drag parachute deploys. at 35 mihr
water starts at a temperature of 19 degrees celcius and is then boiled until it is a superheated steam at temperature
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