1) Two 3.50g beads (point charges) are hanging on threads and repel each other after being equally charged. The threads are tied together at the top and the length of each is 88 cm from the top to the center of the charge. Hanging down and because they repel each other, the two threads make an angle of 32 degrees (16 degrees from the vertical). What is the charge on each bead?
2) A parallel plate capacitor has an electric field between its two plates of 525,000 V/m. The two plates are 2.2x10-5 m apart. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at the surface of the positive plate.
a. What will be the speed of the electron when it reaches the positive plate?
b. What will be the speed of the proton when it reaches the negative plate?