A point charge q = -0.36 nC is fixed at the origin. Physics homework

Physics
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A point charge q = -0.36 nC is fixed at the origin. Where must a proton be placed in order for the electric force acting on it to be exactly opposite to its weight? (Let the y axis be vertical and the x axis be horizontal.)

below or above the q?

Jan 15th, 2016

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The electric force must be up so since the charge at the origin is negative the force on a proton will be up if it is BELOW q 

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Jan 15th, 2016


Jan 15th, 2016

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Jan 15th, 2016
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