I don't really understand Coulombs Law

AI Thread Summary
Coulomb's Law describes the electrostatic force between charged particles, which can be calculated using the formula F = k * |q1 * q2| / r^2, where k is the electrostatic constant. In this case, the force exerted on a proton by an electron 15mm apart can be determined using their respective charges of ±1.602 x 10^-19 C. The force is attractive due to the opposite charges of the proton and electron. The discussion includes a reference to a diagram illustrating Coulomb's Law. Understanding these principles is essential for grasping electrostatic interactions in physics.
bran91bran
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1. How much Coulombs force is exerted on a proton by an electron if they are 15mm away from each other? Is the force attractive or repulsive?



2. http://www.glenbrook.k12.il.us/gbssci/phys/Class/estatics/u8l3b1.gif where k=9* 10^9 N*m^2/c^2



3. I know that the force is attractive,http://www.glenbrook.k12.il.us/gbssci/phys/Class/estatics/u8l3b2.gif but I don't know where to find some elements in Coulombs law.
 
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Electron
wikipedia said:
Electric charge: −1.602176487(40)×10−19 C
Proton
wikipedia said:
Electric charge: 1.602176487(40)×10−19 C
 
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