A 2.30 g air-inflated balloon is given an excess negative charge, q = -3.50 10-8 C,...

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A 2.30 g air-inflated balloon is given an excess negative charge, q = -3.50 10-8 C, by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 6.80 cm to make the balloon float. Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4x) = 8.99 x 10 N-m/C and the acceleration due to gravity is g = 9.81 m/s. In order for this to occur, what polarity of charge must the rod possess? O 92 is positive 92 is a proton 92 is neutral 92 is negative How much charge 92 does the rod have? 92 = C A 2.30 g air-inflated balloon is given an excess negative charge, q = -3.50 10-8 C, by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 6.80 cm to make the balloon float. Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4x) = 8.99 x 10 N-m/C and the acceleration due to gravity is g = 9.81 m/s. In order for this to occur, what polarity of charge must the rod possess? O 92 is positive 92 is a proton 92 is neutral 92 is negative How much charge 92 does the rod have? 92 = C

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To determine the polarity of charge on the rod we can consider the forces acting on the balloon When ... View the full answer