Question

Given a positively charged rod and two spheres on insulating stands, describe a procedure that would give

a) an equal positive charge to the two spheres

b) a positive charge to one sphere and a negative charge of the same magnitude to the other sphere.

c) an equal negative charge to the two spheres.

Answer #1

Two small insulating spheres with radius 6.00×10−2 mm
are separated by a large center-to-center distance of 0.460 mm .
One sphere is negatively charged, with net charge -1.00 μCμC , and
the other sphere is positively charged, with net charge 3.30 μCμC .
The charge is uniformly distributed within the volume of each
sphere.
a) What is the magnitude EE of the electric field midway between
the spheres?
Take the permittivity of free space to be ϵ0ϵ0=
8.85×10−12 C2/(N⋅m2)C2/(N⋅m2) .

Two identical conducting spheres on insulating stands together
have 6.00 X 1013 excess protons. 4.00 X 1013
electrons are transferred when they come into contact with each
other and then they are separated by 5.00 meters.
a) find the original charge of each sphere
b) determine the electostatic force on each sphere after they
are brought in contact.
c) What distance between the spheres before they are brought
into contact would produce the same force?
d) What mass would the...

There are two identical, positively charged conducting spheres
fixed in space. The spheres are 32.0 cm apart (center to center)
and repel each other with an electrostatic force of F1 = 0.0750 N.
Then, a thin conducting wire connects the spheres, redistributing
the charge on each sphere. When the wire is removed the spheres
still repel but with a force of F2 = 0.100 N. Using this
information, find the initial charge on each sphere, q1 and q2 if
initially...

There are two identical, positively charged conducting spheres
fixed in space. The spheres are 47.8 cm apart (center to center)
and repel each other with an electrostatic force of F1 = 0.0720 N.
Then, a thin conducting wire connects the spheres, redistributing
the charge on each sphere. When the wire is removed the spheres
still repel but with a force of F2 = 0.115 N. Using this
information, find the initial charge on each sphere, q1 and q2 if
initially...

A positively charged rod is brought near a metallic bar placed
on an insulating stand. The rod is not touching the bar. Draw the
charges on the metallic bar if any. An uncharged pith ball is
placed near the other end of the bar. Describe the interaction
between the pith ball and the bar.

There are two identical, positively charged conducting spheres
fixed in space. The spheres are 49.0 cm apart (center to center)
and repel each other with an electrostatic force of F1 = 0.0705 N.
Then, a thin conducting wire connects the spheres, redistributing
the charge on each sphere. When the wire is removed the spheres
still repel but with a force of F2 = 0.115 N. Using this
information, find the initial charge on each sphere, q1 and q2 if
initially...

There are two identical, positively charged conducting spheres
fixed in space. The spheres are 34.8 cm apart (center to center)
and repel each other with an electrostatic force of ?1=0.0675 N . A
thin conducting wire connects the spheres, redistributing the
charge on each sphere. When the wire is removed, the spheres still
repel, but with a force of ?2=0.115 N . The Coulomb force constant
is ?=1/(4??0)=8.99×109 N⋅m2/C2 .
Using this information, find the initial charge on each sphere,...

There are two identical, positively charged conducting spheres
fixed in space. The spheres are 31.4 cm31.4 cm apart (center to
center) and repel each other with an electrostatic force of
?1=0.0615 NF1=0.0615 N . A thin conducting wire connects the
spheres, redistributing the charge on each sphere. When the wire is
removed, the spheres still repel, but with a force of ?2=0.115
NF2=0.115 N . The Coulomb force constant is ?=1/(4??0)=8.99×109
N⋅m2/C2k=1/(4πϵ0)=8.99×109 N⋅m2/C2 .
Using this information, find the initial...

Two small, metallic spheres are charged, with charges of -2uc
and 4uc respectively. The spheres are touched together, resulting
in a transfer of charges, and then placed apart. To
three significant figures, determine:
a) the final charge on each sphere. (1 pt)
b) the number of charges that are transferred from one sphere to
the other. (1 pt)
c) the magnitude of the force that acts on one of the spheres
after they are touched and separated. (1 pt)

Two 2.0-cm-diameter insulating spheres have a 6.10 cm space
between them. One sphere is charged to + 22.0 nC , the other to -
37.0 nC . What is the electric field strength at the midpoint
between the two spheres?

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