In a region of space there exists the following electric field (in spherical coordinates) : E~ (r, θ, φ) = (3r 2 cos(θ)ˆr − r 2 sin(θ) θˆ) N m2C Find the amount of charge contained in the region of spaces described by the upper (z ≥ 0) hemisphere of a sphere radius 50cm centered at the origin. Do this two ways, making use of: a) The integral form of Gauss’s law b) The differential form of Gauss’s law
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The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.
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Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
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In a region of space there exists the following electric field (in spherical coordinates) : E~ (r, θ...
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