Question

A small Styrofoam bead with a mass of 14.8 g and a charge of −0.68 µC is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. Find the charge per unit area on the plastic sheet (in µC/m²).What are the magnitude and direction of the acceleration of the piece of Styrofoam if its charge is doubled? (Enter the magnitude in m/s².)

Answer 1

To find the charge per unit area on the plastic sheet, use the equation: charge per unit area = total charge on Styrofoam bead / (2 * area of plastic sheet).

Step-by-step explanation:

To find the charge per unit area on the plastic sheet, we can use the equation:

charge per unit area = τ / (2A)

where τ is the total charge on the Styrofoam bead and A is the area of the plastic sheet.

Therefore, the charge per unit area on the plastic sheet is -0.68 µC / (2 * A).