Homework Help: Physics

Posted by Z on Monday, January 26, 2009 at 3:54pm.

A small plastic ball of mass 6.30 10-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of each plate is 0.0200 m2. What is the magnitude of the charge on each plate?

l+l l\
l+l l \
l+l l \
l+l l \
l+l l \
l+l l \
l+l l \ NEGATIVE WALL
l+l l \
l+l l \
l+l l30deg.\
l+l l 0
l+l l 0+0
l+l 0
l+l
l+l

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