Note: Figure not drawn to scale. The figure above on the left represents the horizontal electric field near the center of two large, vertical parallel plates near Earth's surface. The plates have height hand length , and they are separated by a distance w, as shown on the right. The field has magnitude E. A small object with mass m and charge +q, where m = qE/g, is released from rest at a point midway between the plates. (A) Under which of the following new conditions could the gravitational force on the object be neglected? B C W D h»w q> m qE> mg Eh ㅁ마 h W Ew X >

Inquiry into Physics
8th Edition
ISBN:9781337515863
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Chapter7: Electricity
Section: Chapter Questions
Problem 33Q
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(Α
B
Under which of the following new conditions could the
gravitational force on the object be neglected?
C
W
Note: Figure not drawn to scale.
The figure above on the left represents the horizontal
electric field near the center of two large, vertical parallel
plates near Earth's surface. The plates have height hand
length, and they are separated by a distance w, as shown
on the right. The field has magnitude E. A small object with
mass m and charge +q, where m = qE/g, is released from
rest at a point midway between the plates.
D
h> w
A
q m
qE> mg
Eh Ew
1
J
ㅁ마
W
1.5 x 10-5
N
h
A very small, isolated sphere with charge +Q exists in an
empty region of space. A second very small sphere is moved
from far away to a short distance from the first sphere
X
The second sphere has a charge of +2.0 x 10 C. As it is
moved closer to the first sphere at a constant speed, the
second sphere passes through the circular equipotential
lines due to the first sphere. Two of these lines are separated
by a distance of 0.020 m and have potentials of 100 V and
150 V. What is the magnitude of the average force needed to
move the second sphere between the two equipotential
lines?
>
Transcribed Image Text:(Α B Under which of the following new conditions could the gravitational force on the object be neglected? C W Note: Figure not drawn to scale. The figure above on the left represents the horizontal electric field near the center of two large, vertical parallel plates near Earth's surface. The plates have height hand length, and they are separated by a distance w, as shown on the right. The field has magnitude E. A small object with mass m and charge +q, where m = qE/g, is released from rest at a point midway between the plates. D h> w A q m qE> mg Eh Ew 1 J ㅁ마 W 1.5 x 10-5 N h A very small, isolated sphere with charge +Q exists in an empty region of space. A second very small sphere is moved from far away to a short distance from the first sphere X The second sphere has a charge of +2.0 x 10 C. As it is moved closer to the first sphere at a constant speed, the second sphere passes through the circular equipotential lines due to the first sphere. Two of these lines are separated by a distance of 0.020 m and have potentials of 100 V and 150 V. What is the magnitude of the average force needed to move the second sphere between the two equipotential lines? >
-9
The second sphere has a charge of +2.0 x 10 C. As it is
moved closer to the first sphere at a constant speed, the
second sphere passes through the circular equipotential
lines due to the first sphere. Two of these lines are separated
by a distance of 0.020 m and have potentials of 100 V and
150 V. What is the magnitude of the average force needed to
move the second sphere between the two equipotential
lines?
A
B
C
D
d
A
(Α
B
1.5 x 10-5 N
C
5.0 x 10-6 N
D
1.0 x 10-7 N
2.0 × 10-9 N
+Q, A
-Q, A
St
Two conducting plates of area A are separated by a distance
d, as shown above. The upper plate has a net charge of +Q
and the lower plate has a net charge of -Q. Point P is located
a distance s above the center of the lower plate and closer to
the lower plate than the upper plate. Assume the plate
dimensions are very large compared to d and all gravitational
forces are negligible.
P
Which of the following indicates the direction of the electric
field at point P and the reason it has that direction?
L
X
>
The electric field is in the +x direction because
the charges are equal and opposite.
X
The electric field is in the -y direction because
electric fields point away from positive charge
and toward negative charge.
The electric field is in the -y direction because
point P is farther from the positively charged X
plate.
The electric field is in the +y direction because
electric fields point away from negative
charge and toward positive charge.
<>
Transcribed Image Text:-9 The second sphere has a charge of +2.0 x 10 C. As it is moved closer to the first sphere at a constant speed, the second sphere passes through the circular equipotential lines due to the first sphere. Two of these lines are separated by a distance of 0.020 m and have potentials of 100 V and 150 V. What is the magnitude of the average force needed to move the second sphere between the two equipotential lines? A B C D d A (Α B 1.5 x 10-5 N C 5.0 x 10-6 N D 1.0 x 10-7 N 2.0 × 10-9 N +Q, A -Q, A St Two conducting plates of area A are separated by a distance d, as shown above. The upper plate has a net charge of +Q and the lower plate has a net charge of -Q. Point P is located a distance s above the center of the lower plate and closer to the lower plate than the upper plate. Assume the plate dimensions are very large compared to d and all gravitational forces are negligible. P Which of the following indicates the direction of the electric field at point P and the reason it has that direction? L X > The electric field is in the +x direction because the charges are equal and opposite. X The electric field is in the -y direction because electric fields point away from positive charge and toward negative charge. The electric field is in the -y direction because point P is farther from the positively charged X plate. The electric field is in the +y direction because electric fields point away from negative charge and toward positive charge. <>
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