Enter your Name:   Enter your E-mail Address:  Be sure to write all your answers with the proper number of significant figures and to list the units that go with your answers! 01. A physicist's notebook is full of experimental observations. An astute student says that there is a problem with the following entry: "Electrical Potential in Trial 1 = 1.2 J" What is wrong with this entry? 02. A negative particle is placed near a stationary charge. If the electrical potential that the particle experiences is negative, is the stationary charge positive or negative? 03. A particle is placed near a stationary positive charge. If the particle's potential energy is positive, is the particle positive or negative? 04. A negative charge moves towards a stationary positive charge. As the two charges get closer together, does the potential energy increase or decrease? 05. What is the definition of a capacitor? 06. If a negative particle moves from the positive plate of a capacitor to the negative plate, does it experience an increase or decrease in electrical potential? Problems 7 and 8 refer to the diagram below: 07. Draw the path of the electron beam, assuming that the charge stored in the capacitor is large. 08. Draw the path of the electron beam, assuming that the charge stored in the capacitor is small. 09. A television repair personnotices that when a television is turned on, a single, bright, vertical line appears at the center of the screen. The line goes from the very top of the screen to the very bottom, while the rest of the screen stays black. The repairman immediately decides that one of the controlling capacitors inside the cathode ray tube has ceased to function. Which capacitor does the repair person suspect and why? 10. A +2.3 mC charge is placed 35 cm away from a stationary -3.4 mC charge. What is the electrical potential? 11. In a 15 Volt potential, a particle has a potential energy of -0.45 J. What is the particle's charge? 12. A -1.5 mC charge is moving towards a stationary +6.8 mC charge. What is the change in potential energy as the particle moves from 75 cm away from the stationary charge to only 33 cm from the stationary charge? Did the potential energy increase or decrease? 13. A +1.5 mC charged particle )m = 4.3 kg) is placed 1.2 m from a +4.4 mC stationary charge. If it starts from rest, how fast will the particle be traveling when it is 2.0 m away from the stationary charge? 14. A +2.7 mC charged particle (m = 1.5 kg) is shot with an initial velocity of 202 m/sec towards a +1.8 mC stationary charge. If the particle starts out 1.4 meters from the stationary charge, how close will it come to the charge before turning around and moving away? 15. A proton (m = 1.7 x 10-27 kg, q = +1.6 x 10-19 C) is placed at the edge of the positive plate of a 2.4 x 10-6 F capacitor. If the capacitor holds 17 mC of charge on its positive plate, how fast will the proton be moving when it reaches the negative plate of the capacitor?