Q2. (5 points) An electric field in free space is $E = (5z^2/\epsilon_0) \hat{z}$ V/m. Find the total charge contained within a cube, centered at the origin, of 4-m side length, in which all sides are parallel to coordinate axes (and therefore each side intersects an axis at $\pm 2$).
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Start by drawing the coordinate axes on a piece of paper. The x-axis is horizontal and the y-axis is vertical, intersecting at the origin (0,0). Show more…
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