Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 16CQ: Would you expect to be larger for a gas or a solid?
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Question
Three fixed charges are arrayed in the shape of a right triangle, as shown below, where a = 4.0 cm, b = 3.0 cm, and c = 5.0 cm. The magnitude of charge q is 3.55 μC, but the sign of the charge is not known (i.e., it could either be positive or negative). The magnitude and sign of q2 are both unknown; the value of q3 is +5.05 μC. The net force F on q3 is entirely in the negative x-direction.
q3 ab
q1 c q2
(a) What are the signs of the charges q and q2? Hint: consider which combination of signs for q and
q2 can produce the force F on q3.
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