Determine the temperature distribution through a uranium slab shown. Assume energy generation of 4,500 Btu/min?ft^3 and the slab is surrounded by water at 190ºF with a convective heat transfer coefficient of 450 Btu/hr?ft^2 ?ºF. Use a value of 21.96 Btu/hr?ft?ºF for thermal conductivity of uranium.
What will be an ideal response?
Using the figure shown and the governing equation for one-dimensional conduction
heat transfer with energy generation
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Impulse: A batter hits a foul ball. The 0.14-kg baseball that was approaching him at 40 m/s leaves the bat at 30 m/s in a direction perpendicular to the line between the batter and the pitcher. What is the magnitude of the impulse delivered to the baseball?
A. 9.8 N ? s B. 1.4 N ? s C. 3.5 N ? s D. 5.6 N ? s E. 7.0 N ? s
Is there any method by which we can detect individual atoms in the laboratory?
A) Yes, by using microscopes based on X-rays rather than on light. B) Yes, by using very high power microscopes based on visible light of very short wavelength. C) No, because atoms are purely mathematical abstractions and not real physical objects. D) Yes, by using microscopes based on the "matter waves" made by material particles such as electrons. E) No, because atoms are smaller than any physical wavelengths.
A billion-solar-mass black hole would still have a radius of only
A) 15 pc. B) 3 kpc. C) 150 kilometers. D) 20 AU. E) two million light-years.
The ____________________ is that the universe is both isotropic and homogeneous
Fill in the blank(s) with correct word