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# Announcements: Take any remote, enter 6-digit student ID. - PowerPoint PPT Presentation

Announcements: Take any remote, enter 6-digit student ID. Log onto MasteringPhysics ASAP and make sure you can see assignments. First assignment due Friday 7:30 am. 1 of 3.

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Presentation Transcript

• Announcements:

• Take any remote, enter 6-digit student ID.

• Log onto MasteringPhysics ASAP and make sure you can see assignments. First assignment due Friday 7:30 am.

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is then transferred from B to A (leaving B with an amount Q of negative charge). When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

−Q

+Q

+

B

A

+

+

+

+

+

+

+

2

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is placed upon A. When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

+Q

+

B

A

+

+

+

+

+

+

+

3

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is placed upon A. B is grounded. When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

+Q

+

B

A

+

+

+

+

+

+

+

4

• Announcements:

• Take any remote, enter 6-digit student ID.

• Log onto MasteringPhysics ASAP and make sure you can see assignments. First assignment due Friday 7:30 am.

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is then transferred from B to A (leaving B with an amount Q of negative charge). When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

−Q

+Q

+

B

A

+

+

+

+

+

+

+

7

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is placed upon A. When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

+Q

+

B

A

+

+

+

+

+

+

+

8

• Lightweight conductive sphere A hangs by a string and is free to swing like a pendulum. Identical conductive sphere B is fixed by an insulating rod. Both are initially electrically neutral. An amount Q of positive charge is placed upon A. B is grounded. When A is brought close to B,

• A swings toward B (as shown).

• A swings away from B (not shown).

• A hangs straight down (not shown, no interaction).

+Q

+

B

A

+

+

+

+

+

+

+

9