4. In the figure two tiny conducting balls of identical mass m and identical charge q hang from nonconducting threads of length L. Assume that 0 is so small that tan 0 can be replaced by its approximate equal, sin 0. If L = 130 cm, m = 8.1 g, and x = 7.2 cm, what is the magnitude of q?

4. In the figure two tiny conducting balls of identical mass m and identical charge q hang from nonconducting threads of length L. Assume that 0 is so small that tan 0 can be replaced by its approximate equal, sin 0. If L = 130 cm, m = 8.1 g, and x = 7.2 cm, what is the magnitude of q?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 30CQ: Note that in Figure 20.28, both the concentration gradient and the Coulomb force tend to move Na+...

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

4. In the figure two tiny conducting balls of identical mass m and identical
charge q hang from nonconducting threads of length L. Assume that 0 is so small
that tan 0 can be replaced by its approximate equal, sin 0. If L = 130 cm, m = 8.1
g, and x = 7.2 cm, what is the magnitude of q?
eie
L.

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