Question:
1. Two capacitor plates are equally and oppositely charged. They are separated by 6.30 cm.
An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate.
Where do the electron and proton pass each other? Give your answer as a distance from the positive plate.
What is the angle of the electric field at the position indicated by the dot? Measure the angle cw from +x-axis.
2. A charge of 16.0 nC is uniformly distributed along a thin, flexible rod of length 31.0 cm. The rod is then bent into a semicircle, evaluate the electric field strength from the centre
3. There is a thin rod of length L. The top half of the rod has a charge +Q, and the bottom half of the rod has a charge -Q.
Evaluate the electric field E at a distance r = 7.40 cm if L = 7.30 cm and Q = 3.50 nC
4. Three point charges are located away from a dot. charge 1 is 3 cm north of the dot and is 2.1 nC. Charge 2 is 5 cm east of the dot and is -5nC. Charge 3 is -10nC and is located 45 degrees northeast and 5.831 cm away from the dot. What is the net electric field at the position of the dot?