A high-temperature, gas-cooled nuclear reactor consists of a composite, cylindrical wall for which a thorium fuel element (kth = 57 W/m-K) is encased in graphite (kgr = 3 W/m-K) and a very high flowrate of gaseous helium over the outer wall of the graphite. Consider conditions for which the helium flow where T[infinity] = 600 K and the heat transfer convection coefficient h = 2,000 W/m2K. The radius values are as follows: r1 = 8 mm, r2 = 11 mm, and r3 = 14 mm. Assume the insulation material in the center of the vessel is perfect. Also assume steady-state conditions.
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Physics, 22.06.2019 03:30
Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec
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Physics, 22.06.2019 16:00
An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.
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Physics, 22.06.2019 17:00
Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little
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A high-temperature, gas-cooled nuclear reactor consists of a composite, cylindrical wall for which a...
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