11. A small sphere of mass m carries a total charge q. The sphere hangs from a silk thread between two large parallel conducting plates. The excess charge on each plate is equal in magnitude, but opposite in sign. If the thread makes an angle of e with the positive plate as shown, what is the magnitude of the charge density on each plate?

Two identical spheres are attached to silk threads of length L=0.60 m and hung from a common point as shown in the figure. Each sphere has a mass m=7.0 g. One sphere is given a charge q1, and the other is given a different charge q2, this causes the spheres to separate so that when the spheres are in equilibrium, each thread makes an angle = 20 degrees with the vertical. A small wire is then connected to the spheres, allowing charge to be transferred from one sphere to the other until the two spheres have equal charges, the wire is then removed. Each thread now makes an angle = 30 degrees. Determine the original charge (in micro-coulomb) of q1.

In a vacuum, two particles have charges of q1₁ and 92, where q1 = +4.8 μC. They are separated by a distance of 0.38 m, and particle 1 experiences an attractive force of 3.5 N. What is the value of q2, with its sign? Number i Units ◆

Two 3.0 g spheres on 1.0-m-long threads repel each other after being equally charged, as shown in the figure.  What is the charge  q ?Express your answer in nanocoulombs.

Long highway tunnels must have air cleaners to remove dust and soot coming from passing cars and trucks. In one type, known as an electrostatic precipitator, air passes between two oppositely charged metal plates, as shown. The large electric field between the plates ionizes dust and soot particles, which then feel a force due to the field. This force causes the charged particles to move toward and stick to one or the other plate, removing them from the air. A typical unit has dimensions and charges asshown. What is the electric field between the plates?

In a vacuum, two particles have charges of q1 and 92, where q1 = +5.0 μC. They are separated by a distance of 0.37 m, and particle 1 experiences an attractive force of 4.8 N. What is the value of q2, with its sign? Number i 14.6E-6 eTextbook and Media Units C

9:09 docs.google.com 4. Applying Conservation of Charge: A researcher is analyzing a particle decay process. The data for one experiment shows a particle of charge -3e, decaying to form two new particles. One of the new particles has a charge of - e. -3e Choose -1 e +3 e n -2 e +2 e e with the correct words in the following Conservation of Charge Review: a) Charge is neither created nor destroyed, it can only be (siphoned/ transferred added) from one 10 points Q? -e * 25 points