Two mirrors meet at a 127deg angle. if light rays strike, Ask an Expert

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Q. Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror?

Q. Two particles are fixed to an x axis: particle 1 of charge q1 = +2.0 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.50q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero?

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