Two insulated current-carrying straight wires of equal length are arranged in the lab so that Wire A carries a current northward and Wire B carries a current eastward, the wires crossing at their midpoints separated only by their insulation. Which of the statements below is true?
a. There are no forces in this situation.
b. The net force on Wire B is southward. c. There are forces, but the net force on each wire is zero.
d. The net force on Wire A is westward.
Question 2
Which is not an example of approximate simple harmonic motion?
a. A ball bouncing on the floor.
b. A child swinging on a swing.
c. A piano string that has been struck.
d. A car's radio antenna as it waves back and forth.
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