1. How far apart must two point charges of 80.0 nC (typical of static electricity) be to have a force of 4.00 N between them? 2. 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 1.50 cm above another. (The magnitude of this charge is consistent with what is typical of static electricity.) 3. You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. The ruler has −16 µC of charge. The tissue has 1 g of mass. What is the minimum charge required to pick up the tissue paper?
1. How far apart must two point charges of 80.0 nC (typical of static electricity) be to have a force of 4.00 N between them?
2. 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 1.50 cm above another. (The magnitude of this charge is consistent with what is typical of static electricity.)
3. You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. The ruler has −16 µC of charge. The tissue has 1 g of mass. What is the minimum charge required to pick up the tissue paper?
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