Transcript Slide 1

PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
[Insert puzzler here]
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
1 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
AGENDA
ITEM
Course Introduction
Introductory Concept Survey (Individual)
Standardized Exams
Pop Can Electroscope and Static Electricity
Concept Survey Re-vote (Group)
Dismissal
DURATION
START
0:30
0:10
0:30
0:30
0:10
0:00
0:30
0:40
1:10
1:40
1:50
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.
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
2 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
1 of 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 then transferred from B
to A (leaving B with an amount Q of negative charge). When A is brought close to B,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
−
−
−
−
B
−
−Q
−
−
−
3 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
2 of 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. When
A is brought close to B,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
B
4 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
3 of 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,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
B
5 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
AGENDA
ITEM
Course Introduction
Introductory Concept Survey (Individual)
Standardized Exams
Pop Can Electroscope and Static Electricity
Concept Survey Re-vote (Group)
Dismissal
DURATION
START
0:30
0:10
0:30
0:30
0:10
0:00
0:30
0:40
1:10
1:40
1:50
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.
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
6 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
TRIBOELECTRIC
SERIES
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
7 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
1 of 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 then transferred from B
to A (leaving B with an amount Q of negative charge). When A is brought close to B,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
−
−
−
−
B
−
−Q
−
−
−
8 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
2 of 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. When
A is brought close to B,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
B
9 of 10
PHYS-1700/2100 Course Introduction And Electric Charge
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
3 of 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,
1. A swings toward B (as shown).
2. A swings away from B (not shown).
3. A hangs straight down (not shown, no interaction).
+Q
+ + +
+
+
+ + +
A
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
B
10 of 10