1. If the potential accelerating the electrons is 12,000 volts (we say 12 kilovolts (KV) ), how much kinetic energy injoules does one electron have as it leaves the "gun" on its way to the screen? 2. How fast is that electron going, as a fraction of the speed of light? 3. How long would it take to go 25 cm from the gun to the screen? Give you answer in microseconds, where one microsecond is 10'6 Second. 4. Without doing the math, discuss how the flat plates that steer the beam would affect the place it lands on the screen. How does the mass of the electron enter into the outcome? 5. Identify a contemporary use of this idea other than the obsolete one of television tubes where the image you see is created by a beam inside the tube. For this, it is ne to search to the web but please make the answer your own