lim (kl9356) – Homework 1 – Weathers – (22202)
1
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8
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001
10.0 points
1) Two uncharged metal balls,
X
and
Y
, each
stand on a glass rod and are touching.
Y
X
2) A third ball carrying a positive charge, is
brought near the first two.
Y
X
+
3) While the positions of these balls are fixed,
ball
X
is connected to ground.
Y
X
+
4) Then the ground wire is disconnected.
Y
X
+
5) While
X
and
Y
remain in touch, the ball
carring the positive charge is removed.
Y
X
6) Then ball
X
and
Y
are separated.
Y
X
After these procedures, the signs of the
charge
q
X
on
X
and
q
Y
on
Y
are
1.
q
X
is negative and
q
Y
is negative.
2.
q
X
is positive and
q
Y
is positive.
3.
q
X
is positive and
q
Y
is neutral.
4.
q
X
is negative and
q
Y
is positive.
5.
q
X
is negative and
q
Y
is neutral.
6.
q
X
is neutral and
q
Y
is positive.
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 Spring '00
 Littler
 Charge, Magnetism, Work, lim, Electric charge, point charges, metal balls

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