Answer to Question #288270 in Physics for jovie

Question

In the process of rubbing the lenses of the eyeglasses, 6.28x1010 electrons were transferred.

a. What is the charge of the lenses and the nylon cloth?

b. What is the change in their masses?

Answer 1

a. The charge is

$$Q=Ne=(6.28·10^{10})(1.602·10^{-23})=10·10^{-9}\text{ C}.$$

b. The change in the mass is

$$m=m_eN=5.72·10^{-20}\text{ kg}.$$