PHYS 102 1nd Edition Lecture 1 Outline of Last Lecture I. N/AOutline of Current Lecture II. Summary of Course LessonsIII. Properties of Electric ChargesCurrent LectureII. Summary of Course LessonsA. Electricity1. Applications:a. EKG- produced by your heartb. Therapy c. Bound between atoms (electric force)B. Magnetism1. Applications: a. MRI- huge strong magnet b. Therapy c. Navigation- generated by electricityC. Electromagnetic waves1. Applications: a. Laser b. X-rayc. Cell phone signal d. Nuclear radiationD. Lessons 15.6-15.9 are not on the exam. III. Properties of Electric Charges A. Example: 1. There is an atom with 3 protons, 3 electrons, and 3 neutrons. A proton has an electric charge. The charge is called q or (Q)= +1.6 X 10-19 Coulombs. Coulombs are the SI unit of charge. An electron has an electric charge of -1.6 X 10-19 Coulombs. Negative is not inferior to positive. Neutrons have no charge. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Total (net) charge of atom: Q= 3(q)proton + 3(q)electron= 3(+1.6 X 10-19) + 3(-1.6 X 10-19) = 0 Coulombs (uncharged)2. Uncharged: electricity is not felt 3. Remove an electron (by friction) For example: Q= 3 protons + 2 electrons = 3(+1.6 X 10-19) + 2(-1.6 X 10-19) = +1.6 X 10-19 Coulombs = QObject is positively charged. (like Na+)4. Add an electron Q= 3 protons + 4 electrons = 3(+1.6 X 10-19) + 4(-1.6 X 10-19) = -1.6 X 10-19 Coulombs = -QObject is negatively charged. (like
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