Re: Since k varies but not G suggests an Eather
- From: "Sue..." <suzysewnshow@xxxxxxxxxxxx>
- Date: 15 Jun 2006 02:04:46 -0700
guskz@xxxxxxxxxxx wrote:
Sue... wrote:
Igor wrote:
Randy Poe wrote:
guskz@xxxxxxxxxxx wrote:
F= kQq/r^2 F = GMm/r^2
k varies
No, the electrostatic CONSTANT does not vary. That's why they
call it a constant.
but never G:
1. k ***VARIES**** depending on the density(or structure) of the other
charges in the medium (since medium's are made of electrons and
protons) excluding Q&q.
No, it doesn't.
But k will certainly have different values in different media, since it
depends on the total permittivity of the medium.
Sorry... all media manufacturers get thier electrons from the
same supplier.
http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/elefor.html
Sue...
That's a poor explanation Sue, that link simply explains that "k" is
constant in space THEREFORE FOR THE ELECTRIC FORCE EXCERTED BETWEEN TWO
CHARGES IN ***AIR*** OR ***WATER*** IS *********NOT THE SAME*********
AS THE ELECTRIC FORCE EXCERTED BETWEEN TWO CHARGES IN SPACE: F =
KQq/R^2 (K VARIES WITH THE MEDIUM.....
....MEANING K VARIES WITH THE PRESENCE OF OTHER CHARGES IN THE SAME
REGION WHERE AS "G" DOES NOT VARY WITH THE PRESENCE OF OTHER
OBJECTS(MASSES) IN THE SAME REGION OF M&m (F= GMm/R^2) ).
You just answered your own question so I contend the URL is
effective. ;-)
k is sumed over all space because it is radiative.
G is sumed over all the matter because it is induced.
You have to apply forces to move a mass from moon to earth.
You do not have to apply force to move a charge from one
plate to another plate of a charged capacitor.
So... You see some important difference in the behavior
of fundamental and composite particles ?
Sue...
.
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