# DO NOW Fill in your Table of Contents

DO NOW: Fill in your Table of Contents 4) Coulomb’s Law Notes 5) Coulomb’s Law Worksheet/Homework Explain what went wrong in the experiments from yesterday. Use our vocab terms!

Coulomb’s Law F = electric force (N) k = Coulomb constant q 1 = charge #1 (C) q 2 = charge #2 (C)

Coulomb’s Constant k = 9. 0 x 9 10

A proton and an electron are 1. 00 meter apart. What is the electric force between them? Is it repulsive or attractive? -28 2. 30 x 10 N

A negative charge of - 4. 0 x 10 C and a positive charge of 7. 0 x 10 C are separated by 0. 15 m. What is the force between the two charges? 15 -1. 12 x 10 N

A negative charge of - 2. 0 C and a positive charge of 3. 0 C are separated by 80 m. What is the force between the two charges? 6 -8. 43 x 10 N

Attractive or Repulsive? -3. 4 x 104 N 25 N 400, 000 N 2. 7 x 10 -11 N -8. 4 x 10 -21 -. 026 N

What will happen to the electric force between two charges if the charge on one of them is doubled? a. It will remain the same b. It will double c. It will half d. It will be 4 X more b. It will double

What will happen to the electric force between two charges if the charge on both of them is doubled? a. It will remain the same b. It will double c. It will half d. It will be 4 X more

What will happen to the electric force between two charges if the distance between them is doubled? a. It will remain the same b. It will double c. It will half d. It will 4 X less d. It will be 4 X less

Two electrostatic point charges of +0. 60 C and +0. 50 C exert a repulsive force on each other of 175 N. What is the distance between the charges? 3900 m

The force of electric attraction between charges is 0. 86 N. If they charges are 0. 12 m apart and one of the charges is +0. 55 C, what is the other charge? -12 - 2. 5 x 10 C

Two negative charges that are both - 3. 0 C push each other apart with a force of 19. 2 N. How far apart are the two charges? 4 6. 49 x 10 m

DOL YOU MUST SCORE OVER 125 POINTS! CHOOSE WISELY! 50 POINTS The electrostatic force between two objects is 12 N what would happen if…. 75 POINTS Solve and show your work! The distance is tripled A negative charge of - 4. 0 C and a positive charge of 8. 0 C are separated by 65 m. What is the force between the two charges? The charge on both charges are quadrupled A negative charge of -2 x 1023 C and a positive charge of 7. 5 C are separated by 17 m. What is the force between the two charges? The charge on one of them is doubled Two negative charges that are both - 4. 0 C push each other apart with a force of 29. 2 N. How far apart are the two charges?

- Slides: 14