please help:
A repelling force occurs between two charged objects when the charges are of
a. unlike signs
b. like signs
c. equal magnitude
d. unequal magnitude
Even if you can't remember the value of the Coulomb's Law constant (like me), try to remember these two important facts:
(1) like charges repel; opoosite charges attract
(2) The force between two charges is inversely proportional to the square of the distance, and is the same on both charges
To determine the repelling force between two charged objects, we need to understand the concept of electric charges. Electric charges can be positive or negative.
When two charged objects have charges of the same sign (either both positive or both negative), they repel each other. This means the correct answer is option b. like signs.
This phenomenon can be explained by Coulomb's Law, which states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. The equation for Coulomb's Law is:
F = k * (q1 * q2) / r^2
Where:
F is the force between the charges,
k is the electrostatic constant,
q1 and q2 are the charges of the objects, and
r is the distance between the charges.
When the charges have opposite signs (one positive and one negative), they attract each other instead of repelling.