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Coulomb’s Law…1785

Coulomb’s Law…1785. Gives us a number to understand the size of the force between 2 charges The unit is C…Coulomb. The 4 forces in nature. 1) Strong- holds the nucleus of an atom together 2) Weak- radioactive decay 3) Electromagnetic 4) Gravitational. Relative Strength 10 10

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Coulomb’s Law…1785

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  1. Coulomb’s Law…1785 Gives us a number to understand the size of the force between 2 charges The unit is C…Coulomb

  2. The 4 forces in nature 1) Strong- holds the nucleus of an atom together 2) Weak- radioactive decay 3) Electromagnetic 4) Gravitational Relative Strength 10 10 10 –explains all chemical bonding..holds living and non-living things together 1

  3. Coulomb’s Law- formula for electrostatic force Fe = kq1q2 r2 charge (q) is now responsible for the force

  4. Remember this…the relationship between the electrostatic force and the distance from the object …this is the inverse square law Fe = 1_ d Fg d2

  5. Inverse square law What happens if the Force increases? What happens if the distance increases? Distance decreases Force decreases

  6. Fe= k (q1q2) What happens to the force if the charge increases? Force increases…this is called a direct relationship

  7. The force between two charges gets stronger as the charges move closer together. The force also gets stronger if the amount of charge becomes larger.

  8. Try this… • Which of the diagrams below best represents the charge distribution on a metal sphere when a positively charged plastic tube is placed nearby?

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