Question

**Potential Energy of Charge**

Consider the potential energy between two sets of charges. In one case the charges are equal and opposite and in the other case the charges are identical. Let the magnitude of charges be equal to 1.0 ?C. For 5 different distances (between 1 meter and 1 mm) between the two charges calculate the potential energy between each set.

How do these potential energies compare to a 100 kg skydiver at various heights?

Answer #1

Two large, parallel, metal plates carry opposite charges of
equal magnitude. They are separated by a distance of 45.0 mm , and
the potential difference between them is 365 V
(A) What is the magnitude of the electric field (assumed to be
uniform) in the region between the plates?
(B) What is the magnitude of the force this field exerts on a
particle with a charge of 2.10 nC ?
(C) Use the results of part (b) to compute the...

Suppose you have two electrical charges with equal magnitude,
but you don't know what the sign of their charge is. As you bring
them closer, you notice the electric potential energy between them
increases. What can you determine about the sign of each
charge?
Suppose you have two electrical charges with equal magnitude,
but you don't know what the sign of their charge is. As you bring
them closer, you notice the electric potential energy between them
increases. What can...

How much energy is stored by the electric field between two
square plates, 7.1 cm on a side, separated by a 2.3-mm air gap? The
charges on the plates are equal and opposite and of magnitude 17 nC
.

1. Two charges are placed between the plates of a parallel plate
capacitor. One charge is +q1 and the other is q2 = +4.66mC
(microC). The charge per unit area on each plate has a magnitude of
sigma = 1.27×10-4C/m2. The force on q1 due to q2 equals the force
on q1 due to the electric field of the parallel plate capacitor.
What is the distance r between the two charges?
2. Two identical small insulating balls are suspended by...

The electric field midway between two equal but opposite point
charges is 715 N/C , and the distance between the charges is 29.7
cmcm . What is the magnitude of the charge on each?

If an electron is confined to one-dimensional motion
between two infinite potential walls which are separated by a
distance equal to Bohr radius, calculate energies of the three
lowest states of motion.Calculate numerical value of ground state
energy and compare it with hydrogen atom ground state energy.

1. The force between two charges is 4×10−9N. If the magnitude of
one charge reduced by a factor of two and the distance between the
charges is reduced by a factor of two, what is the new force
between the charges?
2. What is the magnitude of the electric field from 20cm from a
point charge of q=33nC?
3. What is the electric field 10cm from a 50-cm-radius metal
sphere carrying −4.5×106C of charge?
4. Point charges are located at...

Two point charges 2.0 cm apart have an electric potential energy
-230 μJ. The total charge is 40 nC. What is the lesser charge?

If an electron is confined to one-dimensional motion between two
infinite potential walls which are separated by a distance equal to
the Bohr radius, calculate the energies of the three lowest states
of motion. Calculate numerical value of ground state energy and
compare it with hydrogen atom ground state energy.

You arrange two identical charges along the x-axis at positions
(-3.0,0) and (3.0,0), with distances measured in centimeters.
You've set things up so that the origin of your coordinates lies at
the midpoint between the charges. You measure the electric force
acting on the charge on the right and find it has a magnitude of
24574.3 N. You want to deduce the electric field vector that is
acting on the right-hand charge.

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