Question

Two electrons are initially separated by 75 cm when they are shot toward each other with identical speeds of 100 m/s. (a)Find the total initial mechanical energy of the system of electrons. (b) Find the speed of the two particles when their separation distance is 5 cm. (c) Find the work done by the electric force on one of the electrons as its separation distance from the other electron changes from 75 cm to 5cm. Is this value what you expected it to be? Explain.

Answer #1

A beam of electrons is shot into a uniform downward electric
field of magnitude 1.10 103 N/C. The electrons have an initial
velocity of 1.01 107 m/s, directed horizontally. The field acts
over a small region, 5.00 cm in the horizontal direction. (a) Find
the magnitude and direction of the electric force exerted on each
electron. (b) How does the gravitational force on an electron
compare with the electric force? (c) How far has each electron
moved in the vertical...

Two electrons in a vacuum exert force of F = 2.9E-09 N on each
other. They are then moved so that they are separated by x = 5.2
times their original distance. a) What is the force, in
newtons, that the electrons experience at the new separation
distance? B)How far apart, in meters, were the electrons
originally?

Two electrons in a vacuum exert force of F = 1.46E-08 N
on each other. They are then moved so that they are separated by
x = 8.5 times their original distance.
What is the force, in
newtons, that the electrons experience at the new separation
distance?
Fn =
How far apart, in
meters, were the electrons originally?
d =

Two electrons 1 and 2 move along antiparallel paths separated by
a distance of 10 nm, traveling at speeds 5.0 × 107 m/s and 9.0 ×
106 m/s.
What is the magnitude of the magnetic force exerted by electron
2 on electron 1?
Express your answer with the appropriate units.
FB =

1a) Two identical positively charged particles experience
electric forces of magnitude 209 N when they are separated by 4 cm.
Calculate the charge on each particle.
b) Two electrons and a proton are placed on corners of a square
with sides 25 cm. The proton is opposite the empty corner. What is
the magnitude of the electric force on the proton?

A beam of electrons is shot from left to right (+x direction) at
a speed of 3 x 105 m/s through a pair of plates that are
3 cm apart and are uniformly charged. They produce a force of 4.8 x
10–17 N upward on the electron (+y
direction). So that our results are unambiguous,
vectors pointing from left to right will be called +x, and from
bottom to top (along the surface of the paper) will be
+y. Vectors...

Two identical particles of charge 6 μμC and mass 3 μμg are
initially at rest and held 3 cm apart. How fast will the particles
move when they are allowed to repel and separate to very large
(essentially infinite) distance? Now suppose that the two particles
have the same charges from the previous problem, but their masses
are different. One particle has mass 3 μμg as before, but the other
one is heavier, with a mass of 30 μμg. Their...

Two electrons are initially held at rest with a separation of
4.0 μm. If one of the electrons is released, how fast will it be
traveling when it reaches a distance of 1.0 mm from the other? Give
your answer in m/s to three significant figures.

Two charged, square plates, separated by a distance of 27.5 cm
and each with a side length of 44.8 cm, make up a parallel-plate
capacitor. The electric field inside the plates is 2.80×103 N/C. If
the separation distance is halved, what would the electric field
inside the plates become?

Two parallel plates, each charged equally and oppositely to the
other, are separated by 3.5000 cm. A proton is let go from rest at
the positive plate's surface and, at the same time, an electron is
let go from rest at the negative plate's surface. What is the
distance between the negative plate and the point where the proton
and the electron go by each other?
This one will need your answer correct to 5 significant
digits

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