Q1. The two parallel plates in the figure below are 2.0 cm apart and the electric field strength between them is 2.1 104 N/C. An electron is launched at a 45° angle from the positive plate. What is the maximum initial speed v0 the electron can have without hitting the negative plate?
Q2. A 43 cm length of wire has a mass of 7.0 g. It is stretched between two fixed supports and is under a tension of 143 N. What is the fundamental frequency of this wire?