Unit 8 coulomb's law day 2

Multiple Choice

What would be the change in electrostatic force if one charge was reduced by half and the distance between the charges was reduced by 1/3?

• Force would be reduced by 1/5

• Force would be reduced by 1/6

• Force would be increased by 1.5

• Force would be increased by 4.5

Multiple Choice

What is causing the pith balls to repel?

• electrostatic force

• Gravitational force

• Magnetic force

• Kinetic Energy

Word Cloud

What is one of the main differences we see in the coulomb's law equation that we did not have in gravity?

Match

Match the variables with what they represent

• Coulomb's constant

• Charge of object 1

• Distance between charges

• Electrostatic force

• Charge of object 2

k

Q1

r

Fe

Q2

• k

• Q1

• r

• Fe

• Q2

Multiple Choice

Which of the following statements correctly describes the main difference between electrostatic force and gravitational force?

• Electrostatic force only attracts, while gravitational force can attract or repel.

• Electrostatic force acts between masses, while gravitational force acts between charges.

• Electrostatic force can be attractive or repulsive, while gravitational force is always attractive.

• Electrostatic force is weaker than gravitational force.

Multiple Choice

Which variables must be known to solve for Q1 using Coulomb's Law?

• Fe, r, Q2, k

• Fe, r, Q1, k

• Fe, Q2, k

• Fe, r, k

Multiple Choice

When would you need to rearrange coulomb's law to solve for r instead of Fe?

• When the question is asking for the rate of charge

• When the question is asking for the distance between the charges

• When the question is asking how much charge an object has

• When the question is asking how had the charges push on each other

Multiple Choice

In the question our two charges are

A charge of 6.5x10-12 C

A charge of 5.99 x 10-14 C

Will they experience attraction or repulsion?

• Attraction

• Repulsion

Fill in the Blanks

EX 1) A charge of 6.5x10-12 C is placed 4.8 x 10-8 m away from a charge of 5.99 x 10-14 C. What is the force of attraction between them?

What variable is the question asking us to find?

Multiple Choice

A charge of 6.5x10-12 C is placed 4.8 x 10-8 m away from a charge of 5.99 x 10-14 C. What is the force of attraction between them?

Which number is our r?

• 6.5x10^-12 C

• 4.8 x 10^-8 m

• 5.99 x 10^-14 C

• 9x10^9

Fill in the Blanks

A charge of 6.5x10-12 C is placed 4.8 x 10-8 m away from a charge of 5.99 x 10-14 C. What is the force of attraction between them?

Round your answer to the nearest tenths place

Match

EX 2) How far apart are the charges, each has a charge of -2.6 x 10^-8 C,

if the electrostatics force between them 3.0 x 10^-12 N? Is it attraction or repulsion?

Match each variable with the correct number

• Q1 & Q2

• Fe

• r

• k

-2.6 x 10^-8 C

3.0 x 10^-12

?

9x10^9

• -2.6 x 10^-8 C

• 3.0 x 10^-12

• ?

• 9x10^9

Multiple Choice

EX 2) How far apart are the charges, each has a charge of -2.6 x 10^-8 C,

if the electrostatics force between them 3.0 x 10^-12 N?

Which is the correct equation to solve for this problem?

Fill in the Blanks

Solve for r

(round your answer to the nearest hundredths)