The answer would be D, electromagnetic waves
Answer:F = -2.4 * 10¹⁰ N
Explanation:To get the electric force between two charges, we would use Coulomb's law which states that:
F =

where:
F is the force between the two charges
k is Coulomb's constant = 9 * 10⁹ Nm²/C²
q1 is the first charge = 0.0072 C
q2 is the second charge = -0.006 C
d is the distance between the two charges = 0.004 m
Substitute with the givens in the above formula to get the force between the two charges as follows:
F =

F = -2.4 * 10¹⁰ N
Hope this helps :)
The dipole moment of a molecule and its boiling point are directly varied. If the dipole moment is large, the attraction between the positive and negative charges of a molecule is strong thus, requiring stronger forces to break them. Hence, they will have higher boiling points.
The reaction force is the glove pushing against the ball because the reaction force would be the ball pushing onto the glove.
Hope that helps :)
Static charge is occurring