Equipment. Clear Tape. Mr. Klapholz Shaker Heights High School. Forces and Fields (6). In the most fundamental equations about the universe, we find fields . Black holes, the Aurora Borealis, and microwave ovens all are understood in terms of fields. Fields are abstract, but quite real.
QP = -Qe MP 2000•Me
QN = 0 MN MP 2000 Me
Which is more (or are they equal):
• the force on the alpha, or the force on the electron?
• the acceleration of the alpha, or the acceleration of the electron?
The farther apart the objects,
the less the force.
Hey, this looks familiar!
Let’s try an example:
One object has a charge of +0.5 Coulombs,
and the other object has a charge of +2 C.
The objects are 3 meters apart.
How much force repels these objects?
Show your buddy how to start this problem:
F = _____ Newtons. That’s a billion Newtons.
F = 109 Newtons. That’s a billion Newtons. This force is _ _ _ _.
F = 109Newtons. That’s a billion Newtons. This force is huge. And a Coulomb is a _ _ _ _ amount of charge.
F = 109Newtons. That’s a billion Newtons. This force is huge. And a Coulomb is a huge amount of charge.
What would have been different if one of the charges was negative?
This happens because electrons in a conductor are free to move, so if there was an electric field
then charges would be forced to move to a
position until there was no more field.
The uptight definition of the Electric Field requires that q be positive:
E = F / q
E = limq0F / q
Field = Force / Charge