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| Name | First Middle Last |
| Social Sec. ID | |
| email |
Phone Fax |
| Pr 18 1 |
Five styrofoam balls are suspended from strings.
Ball A attracts balls B and repels C.
Ball D attracts B but has no effect on E
A negatively charged rod attracts both A and E.
WHAT ARE THE CHARGES IF ANY ON EACH BALL.
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| Multiple Choice |
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| Pr 18 2 |
Two uncharged metal spheres A and B are in contact. A positively charged rod is brought near the metal spheres and closest to sphere A, but without touch either sphere. The spheres are separated in the presence of the rod.
WHAT CHARGES will BE ON THE SPHERES (IF ANY)
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| Multiple Choice |
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| Pr 18 3 |
Three charge particles, A, B, C, are located near one another. Both the magnitude and direction of the force that particle A exerts on particle B is independent of :
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| Multiple Choice |
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| Pr 18 4 |
Four equal charges, +Q, are arranged on a square of side = 3 meters. The force on the charge in the lower right corner has a direction the would induce motion in the direction:
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| Multiple Choice |
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| Pr 18 5 |
In the previous problem, work out the magnitude and direction of the force acting on the charge in the upper right hand corner of the square.
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| Response |
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