A 11.4-g piece of Styrofoam carries a net charge of -0.702 µC and is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic sheet?

+2 votes

A 11.4-g piece of Styrofoam carries a net charge of -0.702 µC and is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic sheet?

asked Mar 1, 2012 in Physics by sami4594 (47 points)
    

1 Answer

+3 votes

Start by establishing the following relation:

where ∈0 = permittivity of free space = 8.85*10^-12 C^2/N*m^2

 

solve for A, in terms of the other variables.

Since you are finding Charge per unit area, 

which is Q/A

so after finding the value of A,

just plug back into the equation Q/A and solve.

 

Please help support AnswerMenu by checking out the support us, and hot deals links.

 

answered Mar 1, 2012 by pokemonmaster ~Expert~ (3,856 points)
edited Mar 3, 2012 by pokemonmaster

Related questions

+5 votes
1 answer 1,032 views



...