Charges.....Again

Unfortunately, this is a chapter about which I don't comprehend much. I tried reading the book and reviewing the exercises, but the more I read, the more I felt I didn't understand...Luckily, this past week helped a little bit more. Not as much as I would have liked, but it was okay.

Newton's Law of Gravitation is as follows:

F(gravity) = G(m1+m2)/2^2

It is really similar to Coulombs Law or something...in which k = 9*10^9

F(e) = k(q1q2)/r^2

Another equation I got from my friend is  E = F/q. And q = ne. I'm not really sure when to use either, but maybe adrenaline during the test will help me think...Anyway, the review worksheet we were given sort of helped. It reminded me that electrons are the things that exchange as opposed to the neutrons and protons.


...And this is attraction at its best.

Charges

So I'm sure everyone has heard that "opposites attract." Regarding people, this does not always hold true. It does sound logical, but so does "birds of a feather flock together." However, because physics is not the same as psychology, the former line holds true for us.

There are three types of charges: positive, neutral, and negative. Positive and negative charges attract. Neutral and any charge save for another neutral charge attract. Same charges repel, again, with the exception of neutral charges. When there are two neutral charges, they do no react in any way.
(These make fun brainteasers.)

In class, we had to experiment with tape. Gabe and I worked as a pair to deduce whether or not certain pieces of tape had different charges. It was pretty cool, considering that I've never played with charged tape...or tape at all...


...The deer were all attracted to him.