Final Review Unit 9 & 10

According to Coulomb's Law, when the distance increases, what happens to the electrostatic force?

• Increases

• Decreases

• remains the same

• There is no relationship

Answer explanation

Inverse square law tells us more distance means there is less force.

Tags

NGSS.HS-PS2-4

What happens to the force between two charged objects when you double the distance between them?

• it doubles

• it quadruples

• it is reduced by half

• it is reduced to 1/4

Answer explanation

Look back at inverse square law slides in review. Distance is squared so it has exponential effect on force.

Tags

NGSS.HS-PS2-4

If one of the charges doubles, what happens to the force?

• it doubles

• it quadruples

• it is reduced by half

• it is reduced to 1/4

Answer explanation

Look back at inverse square law slides in review. Mass and force are directly proportional. One goes up the other does the same.

Tags

NGSS.HS-PS2-4

What is the value for K (coulomb's constant)

• 9.8

Answer explanation

Any time you use the equation for Coulomb' Law the K is always the same number since it is a constant

Tags

NGSS.HS-PS2-4

What do the q's in the equation represent?

• Force

• Mass

• Distance

• Charge

Tags

NGSS.HS-PS2-4

Which particles would experience an attractive force between each other?

• Two neutrons

• Proton and electron

• Proton and neutron

• Two electrons

Tags

NGSS.HS-PS2-4

Answer explanation

Remember k is a constant so even though it isn't mentioned in the problem, it must till be included in the equation.

Tags

NGSS.HS-PS2-4

Tags

NGSS.HS-PS2-4

Which of the following are conductors?

• plastic

• glass

• copper

• silver

• steel

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following are insulators?

• plastic

• iron

• rubber

• silver

• cotton

Tags

NGSS.MS-PS3-3