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An insulating wall 16 cm thick has one face at 600°C while the other is at 100°C. The thermal conductivity of the material is given by k = 0.078 (1 + 17.95 × 10-4 T) W/mK and T is in °C. Determine the heat loss per unit area and the mid plane temperature. Make sure you explain your answer in detail, as well as, list all steps leading to your answer.
Calculate the minimum natural frequency of a hydraulic cylinder (L = 25 cm and D = 4 cm) connected to a 45 kg load when the hydraulic fluid is (a) an oil with B = 1.7 GPa and (b) water with B = 2.2 GPa.
1. The transistors have |VT |= 3 V. Determine the operating region.
a tensile force of 8 kn is applied to the ends of a solid bar of 7.35 mm diameter. under load the diameter reduces to
permit a user to input a number between 1 to 10. store this value as the variable numberofresistors. this will be used
a simply supported wooden beam subjected to a uniformly distrubuted load is able to resist the bending stresses but
If the temperature of the outer surface is 400 K and its convection coefficient and emissivity are h = 20 W/m2 · K and s = 0.8, respectively, what is the temperature of the inner surface if the wall has a thermal conductivity of k = 0.7 W/m2 · K?
Consider an economy with I consumers and L goods, where, for all i, the endowment vector of consumer i is ei , and the utility function of each consumer i is of the form Iui(xi , ) xn), i=1 where xi is the consumption vector of the ith consumer. Assu..
steam at 2 kg s enters a turbine at 6000 kpa and 600 c and exits as saturated vapor at 20 kpa. the turbine produces
Use two period measurement channels to estimate the X-Y position of the joystick. Organize the software interface into a device driver, and write a main program to test the interface.
1. An inventor claims to have developed a food freezer that at steady state requires a power input of 0.6 kW to extract energy by heat transfer at a rate of 3000 J/s from freezer contents at 270 K. Evaluate this claim for an ambient temperature of..
air at 1600 k 30 bar enters a turbine operating at steady state and expands adiabatically to the exit where the
At the instant shown, the rigid body OA rolls counter clockwise without slipping on the fixed horizontal surface, and point O has a velocity 2 m/s to the left and an acceleration of 1 m/s2 to the right. Point O is at the center of the semi-circle reg..
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