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Mohamad&Issa
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"K" in Coulomb's law
Hi I want to ask how we can get k in Coulomb's law.
Hi I want to ask how we can get k in Coulomb's law.
Pretty much like anything you measure ten? Numercal value depends on the units you use - how you measure it.Its numerical value depends on the charge unit.
Yes, but I meant: the Coulomb constant is a definition of our charge unit, in a sense. It does not say anything about reality. It just says about us - namely about our unit system. This is just a force that two particles of one unit charge extert one on another.Pretty much like anything you measure ten? Numercal value depends on the units you use - how you measure it.
Suppose that you have 2 equivalent descriptions of reality and a transformation between them. The "reality" is the thing that is unchanged under this transformation. Everything else is not "reality", it is just a trait of that particular description.Perhaps you mean that scale factors are not part of "reality"? Or just this particular one?
The equation for Coulomb's Law is F = K * (Q1 * Q2) / r2, where F is the force between two charges, Q1 and Q2, separated by a distance r. K is known as the Coulomb's Law constant and is represented by the symbol k. It is related to the permittivity of free space, which is the ability of a vacuum to permit the formation of an electric field, and is approximately equal to 8.99 x 109 N*m2/C2.
The value of K in Coulomb's Law can be calculated by using the equation K = F * (r2) / (Q1 * Q2). This equation can be rearranged to solve for K, which will give you the value of the Coulomb's Law constant for a specific scenario.
Yes, the value of K can change in different scenarios. This is because it is dependent on the permittivity of free space, which may vary depending on the medium between the two charges. For example, the permittivity of air is slightly different than the permittivity of vacuum, so the value of K will be slightly different in these scenarios.
The units for K in Coulomb's Law are N*m2/C2. This can also be written as kg*m3/A2, which are the units for electric constant (permittivity of free space).
The value of K directly affects the strength of the electric force between two charges. A higher value of K indicates a stronger electric force, while a lower value of K indicates a weaker electric force. This is because the force is directly proportional to K, so a change in K will result in a change in the magnitude of the electric force between two charges.