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Coulomb's Law — Quiz Answers

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1
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If the force between two charges, q , separated by a distance, d , is cap f , what is the list of the other forces, from greatest to least?

A
cap y , cap z , cap w , cap x
B
cap y , cap w , cap x , cap z
C
cap z , cap y , cap w , cap x
D
cap z , cap x , cap w , cap y
2
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How do the electrical force and the gravitational force compare?

A
The electrical force is 8 point 0 times 10 to the negative 37 power times greater than the gravitational force.
B
The electrical force is 1 point 2 times 10 to the 36th power times greater than the gravitational force.
C
The electrical force is 8 point 0 times 10 to the negative 37 power times less than the gravitational force.
D
The electrical force is 1 point 2 times 10 to the 36th power times less than the gravitational force.
4

A negative charge, q sub 1 , of 6 µC is 0 point 0 0 2 m north of a positive charge, q sub 2 , of 3 µC What is the magnitude and direction of the electrical force, cap f sub e , applied by q sub 1 on q sub 2 ?

A
magnitude: 8 times 10 to the 1th power cap n direction: north
B
magnitude: 8 times 10 to the 1th power cap n direction: south
C
magnitude: 4 times 10 to the 4th power cap n direction: south
D
magnitude: 4 times 10 to the 4th power cap n direction: north
5

One charge is decreased to one-third of its original value, and a second charge is decreased to one-half of its original value. How will the electrical force between the charges compare with the original force?

A
It will decrease to one-sixth the original force.
B
It will decrease to one-thirty-sixth the original force.
C
It will increase to six times the original force.
D
It will increase to thirty-six times the original force.
7

Both the electrical force and the gravitational force between two objects share which relationship?

A
They are directly proportional to the square of the distance.
B
They are inversely proportional to the square of the distance.
C
They are directly proportional to mass.
D
They are inversely proportional to charge.
8

What is the equation for calculating the electrical force, cap f sub e , between two charges?

A
cap f sub e is equal to k times open paren the fraction with numerator q sub 1 q sub 2 and denominator d close paren squared
B
cap f sub e is equal to the fraction with numerator q sub 1 q sub 2 and denominator d squared
C
cap f sub e is equal to k the fraction with numerator q sub 1 q sub 2 and denominator d squared
D
cap f sub e is equal to k the fraction with numerator q sub 1 q sub 2 and denominator d
9

One charge is decreased to one-third of its original value, and a second charge is decreased to one-half of its original value. How will the electrical force between the charges compare with the original force?

A
It will increase to six times the original force.
B
It will increase to thirty-six times the original force.
C
It will decrease to one-sixth the original force.
D
It will decrease to one-thirty-sixth the original force.
10

Which statements correctly compare the gravitational force with the electrical force? Choose four correct answers.

A
Any two objects experience a gravitational force between them.
B
The gravitational force can be repulsive.
C
The electrical force can be attractive.
D
The electrical force can be repulsive.
E
Any two objects experience an electrical force between them.
F
The gravitational force can be attractive.

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