WHICH wax he tries out is the independent variable.
How clean his car stays is the dependent variable.
7896mm is equal to 789.6m just move the decimal point, the correct direction, in powers of ten of the units you are converting to and from.
The particle has an acceleration vector with one component directed toward the center of its orbit, and the other directing tangentially to its orbit. Call these components 
(
for center) and 
(
for tangent). Then its acceleration vector has magnitude
We have
where 
is the particle's speed and 
is the radius of orbit, so
We're given that the particle's speed changes at a rate of 23.1 m/s^2. Its velocity vector points in the same direction as , i.e. perpendicular to , so
Then the magnitude of the particle's acceleration is
When the metals touch
together, half the charge of the charged metal flows to the other because the
electrons all repel each other. Therefore this also means that each metal ball
contains the same amount of electrons. Each ball has 5^10 electrons, this is
equivalent to a total charge of:
Q1 = Q2 = (1.602 * 10^-19
coulombs / electron) 5^10 electrons = Q
Q = 1.564 * 10^-12 C
Now using the Coulombs
law to find for the electric force:
F = k q1 q2 / r^2 = k (Q)^2
/ r^2
where k is a contant = 9
* 10^9 N m^2 / C^2
r = the distance of the
two metals = 0.2 m
So,
F = (9 * 10^9 N m^2 /
C^2) (1.564 * 10^-12 C)^2 / (0.2 m)^2
F = 5.51 * 10^-13 N
Since the two metals
repel therefore they are the one which exerts the force hence the magnitude
must be negative:
<span>F = - 5.51 * 10^-13 N</span>
Well how much, how long, and how often
For example how much is like how much a object is left in a small room with chemicals
How long is the time
how often is how much the same cycle is done repeatedly
