1. What is the wavelength (in 10-15 m) of a proton traveling at 19.8% of the speed of light?
(Mp = 938.27 MeV/c2 = 1.6726 10-27 kg , c = 3 108 m/s)
2. Determine the direction of the force (if any) that will act on the charge in each of the following situations.
A positive charge within an electric field that points to the left.
A negative charge within an electric field that points upward.
A positive charge moving into the screen in a magnetic field that points upward.
A negative charge moving to the left in a magnetic field that points into the screen.
A positive charge moving upward in an electric field that points out of the screen.
A positive charge moving downward in a magnetic field that points upward.
4. Two charged spheres are 16.0 cm apart. They are moved, and the force on each of them is found to have been quadrupled. How far apart are they now?____cm
Work in CGS units.
5. A capacitor with capacitance C1 is charged by connecting its terminals to a battery at voltage V1. With the battery still connected, a dielectric substance with dielectric constant c is inserted.
a) By how much is the charge on the capacitor charged when dielectric is inserted.
b) Compare the energy stored in the capacitor before and after insertion.
c) How much work is done by the battery.