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A charge of 585 nC and mass m = 15 g is suspended from a 1.4 m long string. When the string makes an angle of 38° to the vertical, thecharge is in equilibrium. The charge is acted upon by another charge of 302 nC fixed in space. If the two charges have the same vertical elevation, how far are they from one another? What is the tension in the string? If the fixed charge is replaced by an horizontal electric field E, what is the magnitude of the field?

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