Assertion: photon's charge | /r/HasProperty | divided by the square of the distance
Facets:
Source sentences:
text: According to Coulomb’s law, the force F between one charge, q 1 , and a second charge, q 2 , is proportional to the product of the charges divided by the square of the distance r between them, or F = kq 1 q 2 /r2.