Coulomb

What is the value of Coulomb's Constant?

• 9 x 10⁹ Nm²C^-2

• 8.987 Nm²C^-2

• 8.987 x 10¹¹ Nm²C^-2

• 7.1 x 10^4.5 Nm²C^-2

Tags

NGSS.HS-PS2-4

If two equal charges each of 1 C each are separated in air by a distance of 1 km, what is the magnitude of the force acting between them?

• 1 N

• 9 x 10⁹ N

• 9 x 10³ N

• 9 x 10⁶ N

• 1 x 10² N

Tags

NGSS.HS-PS2-4

How strong is the attractive force between a glass rod with a 0.700μC charge and a silk cloth with a –0.600μC charge, which are 12.0 cm apart, using the approximation that they act like point charges?

• -3.5 x 10^-2 N

• -263 N

• -0.263 N

• -3.5 x 10² N

• -0.315 N

Tags

NGSS.HS-PS2-4

What letter is used to denote "charge"?

• k

• q

• r

• e

Tags

NGSS.HS-PS1-2

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

NGSS.HS-PS3-5

Which is the value of the constant in Coulomb's equation?

• k = 9·10^-9

• k = 9.8

• k = 6.67·10^-11

• k = 9 ·10⁹

Tags

NGSS.HS-PS2-4

As two oppositely charged particles approach each other, what happens to the electrical force between them?

• The attractive force increases

• The magnitude of the electric force decreases

• The repulsive force increases

• The magnitude of their charges increases

Tags

NGSS.HS-PS2-4

What variable is a Coulomb the unit for?

• Charge

• Force

• Distance

• Mass

Tags

NGSS.HS-PS2-4

What happens to the force between two charged objects when you halve the distance between them?

• 2X

• 1/2X

• 4X

• 1/4X

Tags

NGSS.HS-PS2-4

What is the unit of electric charge?

• Coulomb

• Newton

• Joule

• Watt