Homework Assignment 1
Due Aug. 29, 1997

1. The electrostatic force between two like ions that are separated by a distance of 5.0 x 10^-10m is 3.7 x 10^-9N.
   1. What is the charge on each ion?
   2. Each ion has a mass of 4.68 x 10^-26 kg. What is the magnitude of the gravitational force between the two ions?
   3. Compare the magnitude of the gravitational and electric forces.
2. Three point charges of +4.0 x 10^-6 C are fixed at the corners of an equilateral triangle of side 10 cm. What force (magnitude and direction) acts on a typical charge?