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SECE Physics SECE Physics
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A year ago
Describe two methods the student could use to increase the force to 64 times its current value?
Post Merge: A year ago

A student is investigating Coulomb’s law. The student measures a force of
+2.00 × 10-3 N between the two charged spheres.

Explain how you can tell whether the charges are both positive, both negative, or positive and negative.
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A year ago
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Explain how you can tell whether the charges are both positive, both negative, or positive and negative.

If the charge is either both positive or both negative, the force is repulsive (just think of magnets!). So the force would have a positive sign if you want to show direction. If the charges are positive and negative then the force is attractive. And the force would have a negative sign to show direction.

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Describe two methods the student could use to increase the force to 64 times its current value?

You can either increase one of the charges by multiplying it by 64. Or you can move the charges apart by a factor of 1/8. The equation of force is F=kq1q2/r2 so you want to find how to get 64xF.
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