Module 9
Module 10
Module 11
Module 12
Module 13
Module 14
Module 15
Module 16
100
What are the units of force?
N or
(kg*m)/s^2
100
What is k in the equation and what are its units:
F = -k • ∆x
the spring constant, N/m
100
What are the units for frequency?
Hertz
100
What does the Law of Reflection state?
The angle of reflection = the angle of incidence
100
What are the units for charge?
Coulombs
100
What are the units for Electric Potential?
V (Volts)
100
What are the units for resistance? What is the symbol for those units?
Ohms; Ω
100
What is the difference between a monopole and a dipole? Give an example of each.
A monopole is a single unit without its counterpart, such as a positive charge without a negative.
A dipole always comes in pairs so that you can never have one side without the other, such as the north and south pole of a magnet.
200
Units for momentum
(kg*m)/s
200
What are the units for Period in a mass/spring system?
seconds
200
What is the speed of light in a vacuum?
3.0 X 108 m/s
200
What is the difference between real and virtual images?
Real images are formed by the intersection of light rays; virtual images are formed by extrapolating light rays.
200
What is the difference between charging by conduction and charging by induction?
Conduction: the charged rod touches the neutral object and transfers some of its charge; the object now has the same charge as the rod
Induction: the charged rod comes near the neutral object and a ground touches the neutral object; the object now has the opposite charge as the rod
200
What is a capacitor?
a device that stores charge
200
What are the units for current?
Amps
300
What does the L stand for in this equation and what are its units? L=mvr
angular momentum,
(kg*m^2)/s
300
What is the equilibrium position in a mass/spring system?
The position of an object when there are no net forces acting on it (rest position)
300
What is the difference between a transverse and a longitudinal wave?
Transverse: propagation is perpendicular to oscillation
Longitudinal: propagation is parallel to oscillation
300
Why does this light ray bend? What is this called and what causes it? 
Refraction. Light rays slow down as they encounter a more dense medium and bend.
300
What is the Law of Charge Conservation?
The net amount of charge in the universe is constant
300
In the equation for the electric potential of a capacitor, what does Cq stand for and what are its units?
V = Q/Cq
Capacitance, Farads
300
What is conventional current?
Current that flows from the positive side of the battery to the negative
300
What is the difference between alternating current and direct current?
Alternating current is constantly changing the direction of flow through a circuit. Direct current always flows in the same direction in a circuit.
400
What is recoil velocity?
the velocity an object develops in response to launching another object
400
What is l in the following equation?
T=2 πsqrt(l/g)
length of the pendulum arm, m
400
What determines pitch and what determines volume in a sound wave?
Pitch: frequency
Volume: amplitude
400
If the index of refraction of substance A is 75% that of substance B, in which substance will light travel faster?
A
400
In an electric field drawing, what is the significance of the direction in which the arrows point?
Away from positive charges, toward negative; the direction a positive test charge would move if placed in the electric field
400
A positive particle is near a stationary negative charge. Is the electric potential positive or negative? What about the potential energy of the particle?
negative, negative
400
What is the difference between a parallel circuit and a series circuit?
In a series circuit, the current flows through each part of the circuit in series. In a parallel circuit, the current "chooses" its path and splits up to flow through different paths.
400
What are the three classifications of substances from a magnetic point of view? Order them in the way they respond to magnets from weakest to strongest
diamagnetic, paramagnetic, ferromagnetic
500
What is the Law of Conservation of Momentum?
When the sum of the forces working on a system is zero, the total momentum does not change
500
What is the restoring force in a mass/spring system?
a force directed toward the equilibrium position, as a result of the displacement from equilibrium
500
Does sound travel faster through the air in warmer or cooler air temperatures?
warmer
500
In an electric field drawing, what is the significance of the density of the electric field lines?
The greater the density of lines, the greater the electrostatic force a charge would experience if placed there.
500
A negative particle is placed a certain distance from a positive stationary charge. If the particle suddenly moves towards the stationary charge, does it experience an increase or decrease in PE?
decrease
500
What is effective resistance?
the total resistance of a group of resistors (if you replaced the resistors in a circuit with just one, what would that resistance be)
500
In the US, the standard electrical outlet produces alternating current and is referred to as a 120V outlet. Does that mean the maximum potential from a socket is 120 V? Why or why not?
No, 120 V is an effective voltage ( a type of average); the maximum is higher.
600
Under what conditions could a Mini Cooper have the same momentum as a large SUV?
If the Mini Cooper has a greater velocity.
600
What is simple harmonic motion?
periodic motion whose period is independent from amplitude
600
Do sound waves generally travel faster in gas, liquids, or solids?
Solids
600
The electrostatic force between 2 charges is measured, and then the distance between the charges is doubled. What happens to the magnitude of the force?
It is decreased by a factor of 4 or it is 1/4 the original force.
600
A positive particle is placed a certain distance from a positive stationary charge. If the particle moves toward the stationary charge due to an outside force, does it experience an increase or decrease in PE?
increase
600
Explain what resistance is.
The ability of a material to impede the flow of current
600
How do most power plants generate electrical current?
Moving magnets around or within a coil of wire causes electrical current.
700
Under what conditions is momentum conserved?
The sum of the forces acting on the system is 0; no outside forces acting on system
700
In a mass/spring system, where does the system reach its max speed?
equilibrium
700
Do light waves generally travel faster in air, liquids, or solids?
air
700
Page 422 # 1
real, inverted, magnified
700
Page 455 # 1
1.3 x 1011 N toward each other
700
A string of lights has some that are lit and others that are burned out. Is this string likely a string of lights in series or parallel?
parallel
800
In a mass/spring system, where is the mass subjected to the greatest force?
amplitudes (Hooke's law)
800
If a car is traveling away from you and honking, will the pitch of the horn sound higher or lower than its actual pitch?
lower
800
Page 422 # 3
virtual, upright, reduced
800
Page 521 # 2
R = 18 Ω
900
page 316 #1
v = -2.1 m/s
900
In a mass/spring system, where does the system reach its maximum potential energy?
amplitudes
900
If light wave A has a longer wavelength than light wave B, which wave has a higher frequency?
B
900
Page 422 # 7
n = 1.70
900
Page 455 #5a
1.0 x 105 N to the left
900
Page 486 #1
Q = -1.8 x 10-3 C
900
Page 521 # 3
I = 2.6 A
1000
Page 316 #7
v= 0.39 m/sec
1000
Page 350 #1
k=180 N/m
1000
Page 384 #1
v = 386.0 m/s
1000
Page 422 # 8
virtual, magnified, upright
1000
Page 456 #7
between the 2 charges nearer to the negative charge
1000
Page 486 # 8
V = 1.6 x 105 V
1000
Page 522 # 8
P = 3.4 x 103 W
1100
Page 316 #9
r = 5.1 m
1100
Page 350 #9
T=4.0 sec
1100
Page 384 # 5
1400m
1100
Page 422 # 10
virtual, upright, reduced