Newton\'s Law of Gravitation and Coulomb\'s Law for electric charges look very s
ID: 2124715 • Letter: N
Question
Newton's Law of Gravitation and Coulomb's Law for electric charges look very similar. Both the gravitational and electric force decrease as the inverse square of the distance between the point sources
And both forces are directly proportional to the sources themselves
But there are two very significant differences.
Charge comes in two types, positive and negative. The existence of two types of charge means that charges can either attract or repel one another. In this week's lab, you will perform a series experiments that will confirm the rule that "like charges" repel and "unlike charges" attract.
The electrical force, on the other hand, is very strong. It can hold matter together at the small scale. As consequence of this, large charge separations cannot be easily maintained. There is a great tendency for objects with opposite charge to "neutralize" one another.
HERE'S THE PUZZLER:
Consider the possibility of a parallel (or perhaps orthogonal) Universe, also with two distinct charges, but one in which like charges attract and unlike charges repel. The top picture below shows a hydrogen atom from our Universe, in which the positive proton attracts a negative electron. The lower picture shows a positive proton attracting a positive electron in the parallel Universe. (Incidentally, positive electrons can be created in our Universe. They are a form of anti-matter called positrons.) Would the parallel Universe be different from ours if this were the only difference? Explain your reasoning, giving an example of how nature would or would not be different.Explanation / Answer
they would have the opposite magnetic moment since the current in the loop is opposite.. so they would itneract with magnetic fields different