Section 2 Pgs 14-22

Question 1

If an electron were brought in the vicinity of a proton, would the proton repel or attract the electron?

Answer 1

Attract. Opposites attract so the proton would attract the electron.

Question 2

Why don’t protons in a nucleus repel each other with sufficient force to split the nucleus?

Answer 2

They are so heavy the force doesn’t affect them.

Question 3

Do the protons in a nucleus have any repulsive force on each other?

Answer 3

Yes

Question 4

What is the polarity of the charge of an object that has less electrons than protons?

Answer 4

Positive

Question 5

Name three ways in which a material can be charged

Answer 5

Friction, contact, induction

Question 6

If a rubber rod is rubbed with a piece of fur, what is the polarity of the rubber? What is the polarity if the fur?

Answer 6

Rod is negatively charged because it picks up electrons from the fur. Fur is now positively charged.

Question 7

How can a charged object be neutralized?

Answer 7

It needs to be discharged

Question 8

Do the lines of force enter or leave an electron?

Answer 8

Enter

Question 9

Does the force of repulsion between two electrons increase or decrease with distance?

Answer 9

Decrease.

Question 10

If the distance of 2 electrons is doubled, what is the magnitude of the new force as compared to the old?

Answer 10

4 times less

Question 11

What is Coulomb’s Law?

Answer 11

The force of electrostatic attraction or repulsion, is directly proportional to the product of the two charges, and inversely proportional to the square of the distance between them