Transcript Blank Jeopardy Game

5 pt.
5 pt.
5 pt.
5 pt.
5 pt.
10 pt.
10 pt.
10 pt.
10 pt.
10 pt.
15 pt.
15 pt.
15 pt.
15 pt.
15 pt.
20 pt.
20 pt.
20 pt.
20 pt.
20 pt.
25 pt.
25 pt.
25 pt.
25 pt.
25 pt.
1-5
How many different kinds of
electric charge are there?
A)
B)
C)
D)
one
two
three
none of these
1-5A
How many different kinds of
electric charge are there?
B)two
1-10 is rubbed with a
If a neutral glass stick
neutral piece of silk, and the silk
acquires a charge of -5x10-8 C, what is
the charge of the glass?
1-10A is rubbed with a
If a neutral glass stick
neutral piece of silk, and the silk
acquires a charge of -5x10-8 C, what is
the charge of the glass?
+5x10-8 C
Why is it that a stream 1-15
of water from the faucet
will attract to a positively-charged piece of
plastic?
A) the water molecules polarize and the -side is
closer to the plastic
B) the water is negatively-charged
C) the water molecules polarize and the + side is
closer to the plastic
D) not enough info -- it is one of life’s great
mysteries :)
Why is it that a stream1-15A
of water from the faucet
will attract to a positively-charged piece of
plastic?
A)the water molecules polarize and the -side is
closer to the plastic
When the electrophorus1-20
shown below is touched
with a neutrally-charged finger and then picked up
the by insulating handle, what is the charge on it?
+ + + + + + +
1-20A
When the electrophorus
shown below is touched
with a neutrally-charged finger and then picked up
the by insulating handle, what is the charge on it?
-
When you ground the
electrophorus, electrons move off
of you onto it (they’re attracted to
the positive base), thus inducing a
negative charge on the
electrophorus.
+ + + + + + +
+ + + +
This is a 3-step process…
a
1-25
neutral hanging ball, made
of light-weight metal, is
placed near a positivelycharged plate with
someone’s hand on the
other side, as shown. Draw
a picture of what happens
to the charge as the ball
makes one back-and-forth
pass between the plate and
the hand.
+ + + +
This is a 3-step process…
a
1-25A
neutral hanging ball, made
of light-weight metal, is
placed near a positivelycharged plate with
someone’s hand on the
other side, as shown. Draw
a picture of what happens
Look at the board
to the charge as the ball
for the answer!
makes one back-and-forth
pass between the plate and
the hand.
2-5
According to Coulomb’s
Law, two like charges
_______ and two unlike
charges ________.
2-5A
According to Coulomb’s
Law, two like charges
repel and two unlike
_______
charges ________.
attract
True 2-10
or False:
When you place two charged spheres
three times as far apart, the
electrostatic force between them is
divided by three.
True2-10A
or False:
When you place two charged spheres
three times as far apart, the
electrostatic force between them is
divided by three.
False, it is divided
by nine (inverse square law).
If two equal charges2-15
(as shown in #1 below)
have a force of 6 blugs between them, what
will be the force between the charges in #2?
#1
+
#2
+
+
+
F = 6 blugs
+
+
+
F = ? blugs
If two equal charges2-15A
(as shown in #1 below)
have a force of 6 blugs between them, what
will be the force between the charges in #2?
#1
+
#2
+
+
+
F = 6 blugs
+
+
+
F = 36 blugs
2-20
2-20A
Three protons form an equilateral triangle with
sides of 0.07m. What is the force on an electron in
the center of the triangle?
Elementary Charge = 1.6x10-19 C
0 Newtons (unit required)
The forces will cancel
2-25
What is the force between
a +5C and a
-12 C charge placed 12.4 cm apart?
2-25A
What is the force between
a +5C and a
-12 C charge placed 12.4 cm apart?
F = k q1q2 / r2
F = (9x109 N2m2/C2)(+5x10-6C)(-12x10-6C)
(0.124m)2
F = 35.1 Newtons
3-5
Electric fields come out of
_______ charges and go into
________ charges.
3-5A
Electric fields come out of
_______
positive charges and go into
________
negative charges.
If the Van de Graaf generator
is charged negative,
3-10
why is this woman’s hair sticking up?
If the Van de Graaf generator
3-10A is charged negative,
why is this woman’s hair sticking up?
Because by
touching the
charged dome, she
is acquiring the
negative charge as
well. Her hair
follicles are all
charged negative, so they repel each
other and align themselves on electric-field lines.
In which of the following
pictures are both charges
3-15
positive?
A
B
C
D
In which of the following
pictures are both charges
3-15A
positive?
A
In which of
the four
positions
shown would
the force
experienced
by a negative
charge be the
least?
3-20
1
4
3
2
In which of
the four
positions
shown would
the force
experienced
by a negative
charge be the
least?
3-20A
1
4
3
2
3-25
How does Dr. Mega-Volt
survive this apparently
insane ordeal? Explain in terms of electric fields.
3-25A
How does Dr. Mega-Volt
survive this apparently
insane ordeal? Explain in terms of electric fields.
The good Doctor is wearing a
Faraday-cage suit, composed
of metal. The electric field
outside of his suit is massive,
yet the field cannot penetrate
to the inside, where the field
is zero. So he lives to zap
another day :)
4-5
How do you calculate the
electric field near a point
charge?
4-5A
How do you calculate the
electric field near a point
charge?
E = kQ /
2
r
Which direction is4-10
the electric field at
point ‘p’?
P
-
-
Which direction is4-10A
the electric field at
point ‘p’?
P
-
Left
4-15
What is the electric field at point P,
2.5m from the 3μC charge?
+
P
What is the electric field at point P,
2.5m from the 3μC charge?
+
E = kQ / r2
E = 9E9*3E-6 / (2.5)2
E = 4320 N/C to the RIGHT
P
What is the electric field at point P?
Each charge has a magnitude of 2μC.
There is 1m between each position
below.
P
+
-
What is the electric field at point P?
4-20A
Each charge has a magnitude of 2μC.
There is 1m between each position
below.
P
+
-
E = kQ1 / r12 – kQ2 / r22
(since opposite directions)
E = 9E9*2E-6 / 22 – 9E9*2E-6 / 12
E = 13500 N/C to the LEFT
3m
What is the electric field at point P?
Each charge is 4μC. The distances are
labeled.
P
+
4m
+
3m
What is the electric field at point P?
Each charge is 4μC. The distances are
labeled.
P
E = kQ1 / r12
E1 = 9E9*4μC / 52
E1 = 1440 N/C (at 36.9o angle: from TAN)
E2 = 9E9*4μC / 32
E2 = 4000 N/C (up)
Eup = 1440 sin(36.9) + 4000 = 4865 N/C
Eright = 1440 cos(36.9) = 1152 N/C
+
4m
E = 5000 N/C at 76.7o above horizontal
+
5-5 bridge to be lit
What was the first
using electricity?
What was the first bridge to be lit
using electricity?
The
Brooklyn
Bridge
5-10
Name the actor
and movie that
produced this famous quote:
“Heeeeeere’s Johnny!!!”
5-10A
Jack Nicholson, in
The Shining
5-15
The average lightning
bolt could power
how many homes?
5-15A
The average lightning
bolt could power
how many homes?
Approximately
200,000!
(+/- 10,000)
5-20 from the ‘Mortal
Name the character
Kombat’ video game series famous for using
lightening bolts against his opponents.
5-20Afrom the ‘Mortal
Name the character
Kombat’ video game series famous for using
lightening bolts against his opponents.
Raiden
5-25
How much power was
required to operate the
Flux Capacitor? Careful, SPELLING COUNTS!!!
5-25A
How much power was
required to operate the
Flux Capacitor? Careful, SPELLING COUNTS!!!
Daily Double
Three protons form an equilateral triangle with
sides of 0.07m. What is the force on an electron in
the center of the triangle?
Elementary Charge = 1.6x10-19 C