Answer to Question #286650 in Atomic and Nuclear Physics for Shawn

Question

A metal is tested to have a charge of 697.6C. How many electrons are added to it to acquire the charge?

If two similarly charged metals are brought 1.5m apart in a medium of dielectric constant 2, calculate the force between them.

Is the force attractive or repulsive?

Answer 1

1.

$N=\frac qe=4.36\cdot 10^{21}.$

2.

$F=\frac{kq^2}{\varepsilon r^2}=9.73\cdot 10^{14}~N,$ repulsive.