Two point charges are located at two of the vertices of a right triangle, as shown in the Figure 16.4. If a third charge -2q is brought from infinity and placed at the third vertex, what will its
electric potential energy be? Use the following values: a = 0.16 m; b = 0.45 m, and q = 2.0 x 10-
C.
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Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.