The lightweight glass sphere in FIGURE Q29.1 hangs by a thread. The north pole of a bar magnet is brought near the sphere. a. Suppose the sphere is electrically neutral. Is it attracted to, repelled by, or not affected by the magnet? Explain. b. Answer the same question if the sphere is positively charged.

Question

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Answer 1

Textbook Question

Chapter 29, Problem 1CQ

The lightweight glass sphere in FIGURE Q29.1 hangs by a thread. The north pole of a bar magnet is brought near the sphere.
a. Suppose the sphere is electrically neutral. Is it attracted to, repelled by, or not affected by the magnet? Explain.
b. Answer the same question if the sphere is positively charged.

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

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01:13

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If the metal sphere on the Van de Graff has a charge of 0.14 Coulombs and the person has a mass of 62 kg, how much excess charge would the person need in order to levitate at a distance 25 cm from the center of the charged metal sphere? Assume you can treat both the person and the metal sphere as point charges a distance 25 cm from each other

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Answer 2

Textbook Question

Chapter 29, Problem 1CQ

The lightweight glass sphere in FIGURE Q29.1 hangs by a thread. The north pole of a bar magnet is brought near the sphere.
a. Suppose the sphere is electrically neutral. Is it attracted to, repelled by, or not affected by the magnet? Explain.
b. Answer the same question if the sphere is positively charged.

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

01:13

Answer 3

Textbook Question

Chapter 29, Problem 1CQ

The lightweight glass sphere in FIGURE Q29.1 hangs by a thread. The north pole of a bar magnet is brought near the sphere.
a. Suppose the sphere is electrically neutral. Is it attracted to, repelled by, or not affected by the magnet? Explain.
b. Answer the same question if the sphere is positively charged.

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

01:13

Answer 4

Textbook Question

Chapter 29, Problem 1CQ

The lightweight glass sphere in FIGURE Q29.1 hangs by a thread. The north pole of a bar magnet is brought near the sphere.
a. Suppose the sphere is electrically neutral. Is it attracted to, repelled by, or not affected by the magnet? Explain.
b. Answer the same question if the sphere is positively charged.

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

Answer 8

(a)

Expert Solution

To determine

The effect of a bar magnet on a glass sphere placed near it.

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

Answer 9

(a)

Expert Solution

Answer 10

(a)

Expert Solution

Answer 11

Expert Solution

Answer 12

To determine

The effect of a bar magnet on a glass sphere placed near it.

Answer 13

Explanation of Solution

Given Info:

A glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

Since magnetic materials are generally made up of iron and other metals. Moreover, this arises because of intrinsic magnetic moment present in the electrons called as electron spin; but here the material is glass and it happens to be an insulator. Hence, glass is not a magnetic material. Therefore, there is no effect of bar magnet over the glass sphere.

Answer 14

(b)

Expert Solution

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.

Answer 15

(b)

Expert Solution

Answer 16

(b)

Expert Solution

Answer 17

Expert Solution

Answer 18

To determine

The effect of a bar magnet over a positively charged glass sphere placed near it.

Answer 19

Explanation of Solution

Given Info:

A positively charged glass sphere is hanging from a thread and North Pole of a magnet bar is brought near it.

There is no magnetic force between the glass sphere and bar magnet since they act on moving charges and other metals. There is a weak attraction due to polarization of charges present on the surface of glass if a magnetic bar is present.

Conclusion:

a) No, there is no attraction or repulsion between the glass sphere and the bar magnet.

b) Yes, the charges present on the glass surface are somewhat attracted to bar magnet.