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## woleraymond Group Title calculate the potential difference between the plates of a parallel plate capacitor so that the gravitational force on a proton would be balanced by the electric field(proton mass = 1.67 x 10^-27kg, plate separation 0.5cm) 2 years ago 2 years ago

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1. imron07

|dw:1348781970269:dw| For the two force to be balanced: $qE=mg\\E=\frac{mg}{q}\\V=Ed\\V= \frac{mgd}{q}$