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Q. What is the net force exerted by these two charges on a third charge = 46.5 placed between and at = -1.235 ?Your answer may be positive or negative, depending on the direction of the force.

Q. Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other. What angle should the polarizing direction of the middle sheet make with the polarizing direction of the first sheet to obtain maximum transmitted intensity when unpolarized light is incident on the stack?

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