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Coulomb's Law — Quiz Answers

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21
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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
22
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Which statements correctly compare the gravitational force with the electrical force? Choose four correct answers.

A
Any two objects experience an electrical force between them.
B
The gravitational force can be attractive.
C
The gravitational force can be repulsive.
D
The electrical force can be repulsive.
E
The electrical force can be attractive.
F
Any two objects experience a gravitational force between them.
23

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

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Coulomb's Law — Quiz Answers — Physics