A negative charge -0.550 C exerts and upwar0.700 N force on an unknown charge 0.

Question

A negative charge -0.550 C exerts and upwar0.700 N force on an unknown charge 0.260 m directly below it. (a) What is the unknown charge (magnitude and sign)? (b) What are the magnitude and direction of the force that the unknown charge exerts on the -0.550 C charge? A negative charge -0.550 C exerts and upwar0.700 N force on an unknown charge 0.260 m directly below it. (a) What is the unknown charge (magnitude and sign)? (b) What are the magnitude and direction of the force that the unknown charge exerts on the -0.550 C charge?

Explanation / Answer

q x 0.55 x 10-6 x 9 x 109 / 0.262  = 0.7 so q = 9.55 x 10-6 coulomb    = 9.55 C b) force exerted on the -0.55 C by the 9.55 C charge is 0.7 N acting oppositei.e downward.

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