Coulomb's Law

Which of the following charges will attract each other?

• -4 μC & -5 μC

• 4 μC & 5 μC

• 4 C & 5 C

• -4 μC & 5 μC

Answer explanation

The charges of -4 μC and 5 μC will attract each other because they have opposite signs.

Tags

NGSS.HS-PS2-4

What does the "q" represent in Coulomb's Law?

• quarks

• quantum

• charge

• coulomb's constant

Answer explanation

The 'q' in Coulomb's Law represents charge, which is the correct choice.

Tags

NGSS.HS-PS2-4

What does the "d" represent in Coulomb's Law?

• radius of the electron

• distance between charges

• radius of the proton

• distance a charge will travel

Answer explanation

The 'd' in Coulomb's Law represents the distance between charges, which determines the strength of the electrostatic force between them.

Tags

NGSS.HS-PS2-4

What is the value of Coulomb's Constant (k)?

• 8.99 x 10⁹ Nm²C^-2

• 8.987 Nm²C^-2

• 8.987 x 10¹¹ Nm²C^-2

• 7.1 x 10^4.5 Nm²C^-2

Answer explanation

Coulomb's Constant (k) is equal to 8.99 x 10^9 Nm^2C^-2. This value represents the proportionality constant in Coulomb's Law, which describes the force between two charged particles. It is important to remember this value as it is commonly used in electrostatic calculations.

• 0.617 m

Answer explanation

The value of distance (d) that would be used to solve Coulomb's Law is 0.617 m because the question specifically mentions that the balloons are held at a distance of 0.617 m from each other.

When distance increases, the electrostatic force between the particles ​ (a)   . We call this a(n) ​ (b)   proportional relationship

• decreases

• indirectly

• increases

• directly

Answer explanation

When distance increases, the electrostatic force between the particles decreases. This is an indirectly proportional relationship.

Tags

NGSS.HS-PS2-4

• 0.617 m

• 9 x 10³ N

Answer explanation

The value of q1 that would be used to solve Coulomb's Law is -6.25×10^-9C, which is the same as the charge of the first balloon.

Tags

NGSS.HS-PS2-4

• 0.617 m

Answer explanation

The value of k used to solve Coulomb's Law is 8.99x10^9 N·m^2/C^2.

Answer explanation

The force between two charged particles is given by Coulomb's Law. The correct choice, 9.22×10⁻⁷ N, is obtained by substituting the given values into the formula.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5