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SolutionsEdit

1. To solve this problem use the equation E= F/q, remember find all the data given then find the best equaiton

  • E=F/q
    • E=10 N/100C
    • E=.1N/C

Option C.

2. To solve this problem use the equation V=W/q, Dont be scared to manipulate equations to your benefit!

  • V=W/q is the same as V x q =W
    • 5 Volts x 2 C = 10J
    • W=10J

Option A.

3. Again to solve this problem use the equation V=W/q

  • V=W/q
    • V=8.0J/4.0C
    • V=2V

Option B.

4. Use the manipulated version of the equation V=W/q

    • V=W/q is the same as q=W/V
    • q= 1.6 x 10 -12 J / 1 x 10 7 V
    • q= 1.6 x 10 -19 C

Option A.

5. Because one of the charges is postive and the other one is negative, they attract (remeber basic properties of charges!) If the two charges are being pulled towards eachother the the forces are acting in opposite directions, therefore the answer must be -F!

Option E.

6. The force between two particles is directly proportional to their charges and inversely proportional to the square of the distance between them. If the charge of one of the particles is doubled, then the force is doubled. If the distance between them is doubled, then the force is divided by four. Since the force is multiplied by two and divided by four, the net effect is that the force is halved.

Option B.

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