Coulomb's Law is a fundamental law of physics that describes the electrostatic force between two charged particles. It states that the force is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them.
To find q1 using Coulomb's Law, you will need to know the values of q2, the distance between the two charges, and the force between them. Then, you can rearrange the equation to solve for q1 by dividing the force by q2 and the distance squared.
The units used in Coulomb's Law depend on the system of units being used. In the SI (International System of Units), the units for charge are coulombs (C), distance is measured in meters (m), and force is measured in newtons (N). In other systems, such as CGS (Centimeter-Gram-Second), the units are different, with charge measured in statcoulombs (statC), distance in centimeters (cm), and force in dynes (dyn).
Yes, Coulomb's Law can be used for both positive and negative charges. The direction of the force will depend on the signs of the charges, with like charges repelling each other and opposite charges attracting each other.
Yes, there are limitations to using Coulomb's Law. It assumes that the charges are point charges and that the distance between them is much larger than the size of the charges. It also does not take into account any other forces that may be acting on the charges, such as gravitational or magnetic forces. Additionally, it only applies to static charges and does not account for any changes in motion or acceleration.