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Physics I Class 18

Physics I Class 18. Coulomb’s Law. Forces Known to Physics (Review). A New Property of Matter - Charge. Conservation of Charge. Coulomb - A Man, A Unit, A Law. Coulomb’s Law of Electrostatic Force. Direction of Electrostatic Force “Opposites Attract”.

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Physics I Class 18

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  1. Physics IClass 18 Coulomb’s Law

  2. Forces Known to Physics(Review)

  3. A New Property of Matter -Charge

  4. Conservation of Charge

  5. Coulomb - A Man, A Unit, A Law

  6. Coulomb’s Law ofElectrostatic Force

  7. Direction of Electrostatic Force“Opposites Attract”

  8. Properties of Electrostatic ForceSimilarities with Gravity

  9. Properties of Electrostatic ForceDifferences with Gravity

  10. Comparison of Gravity and Electrostatic Force

  11. Superposition ofElectrostatic Forces

  12. Two Ways of Calculating theElectric Force Vector

  13. Class #18Take-Away Concepts

  14. Class #18Problems of the Day

  15. Class #18Problems of the Day

  16. Activity #18Coulomb’s Law

  17. Class #18 Optional Material A Prof. B’s Method of Calculation

  18. How to Calculate aGeneral Unit Direction Vector A “unit vector” is a specialvector with dimensionlesslength of one unit.

  19. How to Calculate the Electric Force Vector (Prof. B’s Method)

  20. Class #18 Optional Material B“Three Quarks for Muster Mark”

  21. “Elementary” ParticlesAn Embarrassment of Riches Beginning with the discovery of the electron in 1898, physicists encountered an increasing array of so-called “elementary” particles. It became evident to physicists in the 1960’s that these particles must themselves be combinations of deeper fundamental particles. Joseph F. Alward, PhD Department of Physics University of the Pacific

  22. The Origin of Quark Theory 1929- In the early 1960’s, Gell-Mann and others proposed the Quark Theory to explain the “elementary” particles and their interactions in terms of 3 deeper fundamental particles called quarks. Further developments have shown there are actually 6 different quarks and their corresponding anti-quarks. The quarks and their properties have been given whimsical names like “charm” that have no physical significance. Murray Gell-Mann tookthe name quark from "Three quarks for musterMark", in James Joyce'sbook Finnegan's Wake.(1963) (Nobel Prize 1969)

  23. 6 Quark Building Blocks Quarks Anti-Quarks Anti-Bottom

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