A 2.45 g air-inflated balloon is given an excess negative charge, q1 = -3.00 × 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 = 6.20 cm to make the balloon float. Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4re0) = 8.99 × 10º N•m²/C² and the acceleration due to gravity is g = 9.81 m/s².

A 2.45 g air-inflated balloon is given an excess negative charge, q1 = -3.00 × 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 = 6.20 cm to make the balloon float. Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4re0) = 8.99 × 10º N•m²/C² and the acceleration due to gravity is g = 9.81 m/s².

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter18: Electric Charge And Electric Field

Section: Chapter Questions

Problem 1PE: Common static electricity involves charges ranging from nanocoulombs to microcoulombs. (a) How many...

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