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(a) Common transparent tape becomes charged when pulled from a dispenser. If one

ID: 1594023 • Letter: #

Question

(a) Common transparent tape becomes charged when pulled from a dispenser. If one piece is placed above another, the repulsive force can be great enough to support the top piece's weight. Assuming equal point charges (only an approximation), calculate the magnitude of the charge if electrostatic force is great enough to support the weight of a 13.0 mg piece of tape held 0.80 cm above another. (The magnitude of this charge is consistent with what is typical of static electricity.)
THE FINAL ANSWER SHOULD BE IN COULOMBS UNIT EXAMPLE OF HOW THE ANSWER SHOULD LOOK IS 6.26e-10 c (a) Common transparent tape becomes charged when pulled from a dispenser. If one piece is placed above another, the repulsive force can be great enough to support the top piece's weight. Assuming equal point charges (only an approximation), calculate the magnitude of the charge if electrostatic force is great enough to support the weight of a 13.0 mg piece of tape held 0.80 cm above another. (The magnitude of this charge is consistent with what is typical of static electricity.)
THE FINAL ANSWER SHOULD BE IN COULOMBS UNIT EXAMPLE OF HOW THE ANSWER SHOULD LOOK IS 6.26e-10 c
THE FINAL ANSWER SHOULD BE IN COULOMBS UNIT EXAMPLE OF HOW THE ANSWER SHOULD LOOK IS 6.26e-10 c

Explanation / Answer

Here, 8.98*109 * Q2/0.0082 = 13 *10-6 *9.8

=>   Q2 = 90.79 *10-20

=> Q = 9.53 *10-10   C                          ----------------------->   the magnitude of the charge

=>    Q = 9.53 e-10   C