Exam 1: The Electric Field I: Discrete Charge Distributions

In the diagram, Q₁ = 6.0 $\mu$ C and Q₂ = -6.0 $\mu$ C. If Q₂ has a mass of 2.0 g, a uniform electric field of 1.5 kN/C imposed in the positive y direction would give this particle an acceleration in the y direction of approximately

If you bring a positively charged insulator near two uncharged metallic spheres that are in contact and then separate the spheres, the sphere on the right will have

A charge 2Q is located at the origin while a second charge -Q is located at x = a. Where should a third charge be placed so that the net force on the charge is zero?

A particular nucleus of the element erbium contains 68 protons and 90 neutrons. What is the total charge of the erbium nucleus?

An electron is moving horizontally east in an electric field that points vertically upward. The electric force on the proton is

A square has equal positive charges at three of its corners and a negative charge at the third. The direction of the electric field at point P is

Two point charges of unknown magnitude and sign are a distance d apart. If the electric field strength is zero at a point between them on the line joining them, you can conclude that