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A negative charge of -0.540 ?C exerts an upward 0.190 N force on an unknown charge...

A negative charge of -0.540 ?C exerts an upward 0.190 N force on an unknown charge 0.320 m directly below it.

What is the unknown charge in ?C?

What is the magnitude of the force that the unknown charge exerts on the -0.540 ?Ccharge in N?

What is the direction of the force that the unknown charge exerts on the -0.540 ?Ccharge?

  

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