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The diagonal of a long triangular bar (45-45-90 triangle section) is well insulated. While sides of equivalent length are maintained at uniform temperatures of 100 and 0 C. a. Establish a nodal network consisting of five nodes on each (perpendicular) side. For one of the nodes on the diagonal surface, define a suitable control volume and derive the finite difference equation. Using this form for the diagonal nodes and appropriate equations for the interior nodes, find the temperature distribution in the bar. On a scale drawing of the shape, show the 25, 50 and 75C isotherms. (assume unit dimensions for the two perpendicular sides.
Horsepower and efficiency of three-phase motor, If a fully loaded 440V, three-phase motor draws 12.4 A at 86% power factor (pf). It's speed is 1730 rpm and its torque output to a mechanical load is 29.1 lb-ft x 1.356 = 39.5 Nm.
find the natural frequency of a pendulum for small angle deflections when the mass of the rod/string is not negligible. (Mass of rod = m, mass of ball = M.
A 90N force is applied to control rod AB as shown. Knowing the length of the rod is 225mm, determine the moment of the force about point B by resolving the force into components along AB and in direction perpendicular to AB?
Calculate the force of attraction between a K+ cation and a O2- anion, the centers of which are separated by a distance of 1.5 nm.
Treat the locomotive as a particle and assume that the railroad tracks are rectilinear and horizontal.
What are the percentages of the total heat absorption taking place in the economizer, boiler drum and the superheater, respectively? Assume cp of air and water as 1.005 kJ/kg K and 4.2 kJ/kg K, respectively.
Two simple pendulums are related as follows. Pendulum A has a length LA and a bob of mass mA; pendulum B has a length LB and a bob of mass If the period of A is twice that of B, What is the relationship between LA and LB?
If the room temperature is 15C and the temperature of the air exiting the hair dryer is 50C, what is the percent increase in the air velocity as it passes through the dryer.
ethanol blended with gasoline can be used to power a flex-fueledcar. one particular blend that is gaining in popularity
For the pendulum shown in the figure,the restoring torque due to gravity is given by T=mgLsin(thita). Derive the linearised equation about the operation point thita=0.
Assume you are given a spherical joint where the ball has a radius of 20 mm and socket has a radius of 22 mm. If the contact load is 50 N, E = 210 GPa, and ν = 0.3, determine (a) the radius of the contact area, (b) the maximum contact pressure.
determine the width w of the link bc needed so that the structure with load p 20 kips has a factor of safety equal to
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