Question

2. Coulomb’s Law, multiple charges (10 pts)

Charge ?1 = +25?? is at the origin, charge ?2 = −15?? is on the x-axis at ? = 2.00 ?, and charge

?3 = +20?? is at the point ? = 2.00 ?, ? = 2.00 ?.

a) Draw a labelled diagram of the charges and their locations. Include:

• A coordinate system

• Vector arrows for the forces due to each charge acting on charge ?3.

• A vector arrow showing the net force acting on charge ?3.

b) Find the x and y components of the net force acting on charge ?3. Show your work.

c) Find the magnitude and angle ? that indicates the direction of the net force exerted on charge ?3.

Label ? on your diagram.

Answer 1