Coulomb's Law Quick Check

According to Coulomb's Law, when the distance increases, the electrostatic force ____________.

• increases

• decreases

• remains unchanged

• has no relationship to distance

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NGSS.HS-PS2-4

Two charged objects have a repulsive force of 0.080 N. If the charge of one of the objects is doubled, then what is the new force in N?

Mathematical Equivalence

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NGSS.HS-PS2-4

Two charged objects have a repulsive force of 0.080 N. If the charge of one of the objects is doubled, and the distance separating the objects is doubled, then what is the new force?

• 0.040 N

• 0.020 N

• 0.160 N

• 0.010 N

Tags

NGSS.HS-PS2-4

Label the parts of the formula for Coulomb's Law.

c

b

d

e

a

electrostatic force

charge of object 2

charge of object 1

distance

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NGSS.HS-PS2-4

What is the formula for Coulomb's Law?

Tags

NGSS.HS-PS2-4

Coulomb’s Law states that the electrostatic force is ____________ proportional to the square of the distance between the charged objects.

• Discreetly

• Indiscriminately

• Inversely

• Directly

Tags

NGSS.HS-PS2-4

Suppose that two equally charged spheres attract each other with a force of -.754N when placed a distance of 0.432 m from each other. Determine the charge of the spheres.

• 3.95 x 10^-6 C

• 6.01 x 10^-6 C

• 3.62 x 10^-11 C

• 3.64 x 10^10 C

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Two balloons with charges of +3.37 x 10^-6 C and -8.21x10^-6 C attract each other with a force of 0.0626 N. Determine the separation distance between the two balloons.

• +1.99 m

• +2.50 m

• + 0.750 m

• +0.225 m

Tags

NGSS.HS-PS2-4

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