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36 notecards = 9 pages (4 cards per page)

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GENERAL PHYSICS #2 LAB FINAL

front 1

How many locations can you place a lens between the object and a screen to create a focused image?

back 1

Two

front 2

How many different lenses did you use in the lab?

back 2

Two: Concave/Convex

front 3

Faraday's law of induction tells us that the EMF induced in a circuit is proportional to the:

back 3

Rate of change of magnetic flux through the circuit

front 4

Lenz's Law tells us that the induced current in the wire loop is such to produce a magnetic field which:

back 4

opposes the change in the magnetic source which caused the induced current

front 5

In this Lab 3 we will be looking at standing waves on a string, what property are we changing to change the number of nodes in the standing wave?

back 5

We change the frequency of the oscillator

front 6

In last week's lab we made 3 graphs with period (T) and length (L) of the pendulum. Which graph shows a proportional relationship?

back 6

T2 vs L

front 7

Which variable had a large effect on the period of a pendulum?

back 7

length

front 8

Which picture shows a second harmonic standing wave on a string?

back 8

Two loops

front 9

Higher frequency sound waves will have __________ velocity compared to lower frequency sound waves.

back 9

the same

front 10

To measure the wavelength of sound waves we will:

back 10

Move the microphone back and forth

front 11

In last week's lab (Week 2) when we doubled the tension in the string.

back 11

The wave velocity approximately went up by 40%

front 12

Other than tension, what determines the speed of a wave on a string?

back 12

string density

front 13

In today's lab (Week 5) we will investigate electric field-lines and Gauss' Law using:

back 13

A computer program

front 14

For the Gauss' law part of the lab we will

back 14

Count the number of field lines entering and exiting a "loop"

front 15

If a pair of charges gets 4 times closer than they were before (say, from 80 cm apart to 20 cm apart), by what factor does the force increase?

back 15

16

front 16

What can you definitely conclude must be true about the charges balls shown in the diagram?

back 16

They have like sign charges

front 17

According to the lab manual, the prelab will investigate the charge on

back 17

Scotch Tape

front 18

In the last part of this lab we will test Coulomb's law in a simulation by:

back 18

Determining the force between two charged balls

front 19

Roughly speaking, how long is the wavelength of a 40 kHz sound wave?

back 19

8.5 mm

front 20

How does the speed of sound coming out of the 40 kHz transducers differ from the velocity of audible sound frequencies?

back 20

The ultrasonic waves travel the same speed as audible waves

front 21

Charges shown have +/- μC of charge. How much charge is hidden behind the locked out region?

back 21

+ 1 μC

front 22

How would the total number of field lines entering the blocked out region (that is number entering minus number exiting) change if another positive charge was placed at the position marked with a "X?"

back 22

The total number of field lines would remain the same

front 23

What analogy is used to describe charge leaving a capacitor in the preliminary questions?

back 23

candy in a candy jar

front 24

The function that describes the discharge of a capacitor is _______ with time.

back 24

exponential

front 25

Which analogy was used in the Ohm's Law lab report to describe voltage, current and resistance:

back 25

Water flowing through a pipe

front 26

What type of relationship does Ohm's Law predict for voltage and current through a resistor?

back 26

Proportional

front 27

You have 2 capacitors each of which is hooked up to a different resistor. The first capacitor discharges in 5 seconds when hooked up to the first resistor. The second capacitor discharges in 1 second when hooked up the second resistor. Which scenario is NOT possible?

back 27

The second resistor is larger and the second capacitor is smaller, τ =Rc

front 28

A capacitor is being discharged through a resistor. After one second, half of the charge is left in the capacitor. How much of the charge is left after 2 seconds.

back 28

1/4 of it

front 29

Which of the following materials is "ohmic" (obeys Ohm's Law), based on your laboratory results?

back 29

a resistor

front 30

A light bulb heats up as current is passing through it. Compared to its resistance when cold, the resistance when hot is

back 30

greater

front 31

In this lab, the ultimate objective is to measure the magnetic field of

back 31

the Earth

front 32

When the magnetic field of the Earth and the coil cancel out, the compass needle will

back 32

point halfway between north and south

front 33

The horizontal component of the magnetic field of the Earth (what we measured) inside the physics labs is about:

back 33

0.25 G

front 34

Indicate the direction of the magnetic field inside the solenoid (The heads of the arrows shown below and the part of the circular wires next to them are "closer" to you than the top and bottom parts of the circular wires shown.)

back 34

----------->

front 35

In today's lab (Week 9) we will study how the magnetic field inside a "long" Slinky depends on: (circle all that apply)

back 35

the current in the Slinky

the density of turns in the Slinky

front 36

In today's lab (Week 9) we will determine the value of which constant?

back 36

μ0