Coulomb's Law Calculations

A 5 C and 8 C are 8 m apart. What is the force between them?

• 5.625 x 10⁹

• 5.625 x 10^-9

• 4.5 x 10¹⁰

• 4.5 x 10^-10

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NGSS.HS-PS2-4

NGSS.HS-PS3-5

A 5 C and 8 C charge give off a force of 2.5 x 10⁹ N. What is the distance between them?

• 11 m

• 12 m

• 121 m

• 144 m

Tags

NGSS.HS-PS2-4

Select Multiple Answers.

A negative force between two charges mean they:

• Attract

• Repel

• Are the same sign

• Are opposite signs

Tags

NGSS.HS-PS2-4

A repulsive force exists between which two particles?

• Two neutrons

• An electron and a neutron

• An electron and a proton

• Two electrons

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which two particles are attracted to each other?

• Two neutrons

• A proton and an electron

• Two protons

• An electron and a neutron

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

How is the electric force between two charges affected when both of the charges are cut in half?

• decreases four times

• no change

• increase four times

• increases 2 times

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NGSS.HS-PS2-4

If the distance is reduced by 1/4, what happens to the force?

• 16 times

• Reduces by a fourth

• no change

• Reduces by half

A charge of 3 C is 27 m away from another charge. They exert a force of -2.59 x 10⁸ N on each other. What is the 2nd charge?

• 5 C

• -5 C

• 7 C

• -7 C

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NGSS.HS-PS2-4

A charge of 4 C and -7 C are 200 m apart. What is the force between them?

• 6.3 x 10⁶

• -6.3 x 10⁶

• 2.52 x 10¹¹

• -2.52 x 10¹¹

Tags

NGSS.HS-PS2-4

Coulomb's law says that the force between any two charges depends

• directly on the size of the charges

• inversely on the square of the distance between the charges

• both are correct

Tags

NGSS.HS-PS2-4