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WorksheetsFinal Exam
Total questions: 100
Worksheet time: 4hrs 41mins
The metric base unit for mass is
Meter
Liter
Gram
pound
The metric base unit for volume is_________.
Meter
Liter
Gram
quart
0.98L = ________mL
98
0.98
980
9800
Tracy brought a large pail to the beach. What might be the volume of the pail?
200 mL
200 L
5 L
5 mL
What might be the best estimate of the length of a baseball bat?
1 km
1 cm
1 m
1 mm
There are 1,500 milliliters in a bottle of laundry detergent. How many liters is this? (1L = 1,000mL)
150L
1.5L
15L
0.15L
Which unit of measurement is the best choice for the capacity of the cooler?
grams
kilometers
millilters
liters
Compared to 54 meters, 54 centimeters is:
Larger
Smaller
The same
A brick is taken to the moon. Which measure is different for the brick on the moon as compared to on the Earth?
Its mass
Its length
Its volume
Its weight
What part of the wave is shown by line A?
crest
trough
wavelength
frequency
Which part of the wave is shown by line C?
crest
wavelength
resting point
amplitude
The time interval shown is 0.10 second. What is the frequency of this wave?
3 Hertz
4 Hertz
5 Hertz
50 Hertz
What is the speed of a wave that has a wavelength of 2.0 meters and a frequency of 3.0 Hz?
2.5 m/s
5 m/s
4.5 m/s
6 m/s
The pitch of sound depends on
frequency
amplitude
wavelength
The loudness of sound depends on
wavelength
amplitude
frequency
Which wave in the diagram has the smallest frequency?
1
2
3
4
Which part of the wave is this?
Crest
Trough
Compression
Rarefaction
In a longitudinal wave moving to the right, the particles move...?
right and left
up and down
vertically
in the direction of the hertz
What kind of wave is pictured?
compressional wave
transverse wave
sound wave
mechanical wave
When the car moves TOWARD you, its horn seems...
Low pitched
High pitched
Normal
Two transverse waves overlap. Crests overlap with troughs and troughs overlap with crests. The waves are
In-phase
Out-of-phase
In-synchronicity
Out-of-synchronicity
Look at the diagram. At which positions will the overlapping waves have the most destructive interference?
Positions #1 & #5
Positions #2 & #3
Positions #3 & #4
Positions #4 & #5
Given that Wavelength= 2.0m and Frequency= 150 hertz
Velocity= ________
.75 m/s
75 m/s
300 m/s
Given that Velocity= 12 m/s and Frequency= 600 hertz
Wavelength= __________
7200 m
0.02 m
612 m
A wave has frequency of 5.0 Hz and a wavelength of 10 m. What is the speed of the wave?
500 m/s
50 m/s
5 m/s
0.5 m/s
An open pipe (pictured on the left) is 40 cm and makes a tone travelling at 330 m/s. Calculate the first harmonic wavelength.
40 cm
80 cm
120 cm
160 cm
An open pipe (1.8 m long) makes a tone travelling at 330 m/s. Calculate its frequency for the 3rd harmonic.
183.3 Hz
234 Hz
275 Hz
594 Hz
A violin string of length 0.54 m and wave speed of 565 m/s along it. Calculate the frequency of the 3rd harmonic.
1046.3 HZ
282.5 Hz
2615.7 Hz
1569.4 Hz
Calculate the beat frequency if a 400 Hz and a 398 Hz sound are heard by Quinn.
1 Hz
2 Hz
3 Hz
4 Hz
What would 54Joules be an example of?
work
power
distance
force
To get the lowest pitch on a guitar string one should:
Use the fattest, longest string with the least tension.
Use the thinnest, shortest string with the most tension.
Use the fattest longest string with medium tension.
Use the thinnest longest string with medium tension.
What is an example of a force?
Energy
Power
Pressure
Weight
If you decrease your work and increase your time, you will have
more power
less power
same amount of power
power rating can not be determined
An object of mass 10 kg is lifted to a height of 2.0 m. About how much work is done on the object?
20 J
200 J
5. J
50 J
How much power is required to do 600 J of work in 3.0 s?
200 W
1200 W
0.05 W
603 W
If 70 W of power is produced in 20 seconds, how much work is done?
140 J
90 J
1400 J
3.5 J
Doubling the intensity of a sound results in an increase in loudness of:
2 dB
3 dB
10 dB
20 dB
The threshold of hearing is:
0 dB
1 dB
3 dB
10 dB
The smallest change in loudness that a human can detect is:
0 dB
1 dB
3 dB
10 dB
In order to make a sound twice as loud, you must increase the sound level by:
0 dB
1 dB
3 dB
10 dB
If the intensity of a sound is 16W/m2 at a distance of 1.0 meter from the source, the intensity 2.0 meters from the source will be:
4 W/m2
8 W/m2
2 W/m2
32 W/m2
If the sound level produced by one horn at a location is
78 dB, the sound level produced by four identical horns at the same location is:
75 dB
81 dB
84 dB
82 dB
During a physics lab, a plastic strip was rubbed with cotton and became negatively charged. The correct explanation for why the plastic strip becomes negatively charged is that ...
the plastic strip acquired extra electrons from the cotton.
the plastic strip acquired extra protons from the charging process
protons were lost by the plastic strip as the result of the charging process
the plastic strip lost electrons to the cotton during the charging process
When a plastic rod is rubbed with wool, the rod acquires a negative charge because
protons are transferred from the wool to the rod
protons are transferred from the rod to the wool
electrons are transferred from the rod to the wool
electrons are transferred from the wool to the rod
What direction are the electric field lines around an electron?
towards the charge
away from the charge
In a circle around the electron
toward the electron on one side, and away on the other
Which of the following labeled points is in the region with the strongest electric field?
A
B
C
D
What is the electric force on a 5 coulomb charge in an electric field of 20 N/C?
4 N
100 N
40 N
10 N
What is the definition of electric current?
The ratio of potential difference across a component to the resistance of the component
The power delivered by a battery per unit potential difference
The rate of flow of electric charge
The energy per unit charge dissipated in a power supply
Which diagram represents the pattern of electric field lines of two small positive point charges held at the positions shown?
Which net charge could not be found on an object?
4.8 x 10-19 C
1.6 x 10-19 C
3.2 x 10-19 C
2.8 x 10-19 C
How many volts are needed to do 50 joules of work on a 2.0 Coulomb charge?
100V
25V
0.04V
52V
Two parallel plates are 0.002 meters apart. If the plates are connected to a 8.0 volt battery, what will be the electric field strength between them?
4000 V/m
0.016 V/m
2.5 x 10-4 V/m
8.002 N/C
The electric field between two oppositely charged parallel plates is directed from:
the negative plate to the positive plate and strongest near the positive plate.
the positive plate to the negative plate and strongest near the positive plate.
the negative plate to the positive plate and the same strength everywhere between the plates.
the positive plate to the negative plate and the same strength everywhere.
Current squared times Resistance (I2 R) equals
Watts
Volts
Amperes
Ohms
The voltage supplied to a circuit is 17 V and the current running through is
10 A. What is the power generated?
170 W
170 A
1.7 V
1.7 W
The length of a certain conductor of resistance 100Ω is doubled and its cross-sectional area is halved. Its new resistance is
100Ω
50Ω
200Ω
400Ω
which has the highest current flowing through it?
R1
R2
R3
All the same
Consider two copper wires of equal cross-sectional area. One wire has 3 times the length of the other. How do the resistivities of these two wires compare?
Both wires have the same resistivity.
The longer wire has 3 times the resistivity of the shorter wire.
The longer wire has 9 times times the resistivity of the shorter wire.
The longer wire has 27 times times the resistivity of the shorter wire.
A charge of 48 C flows for 6s. What is the current?
8 A
288 A
8 V
288 V
Magnetism is generated by a wire due to the motion of:
protons.
electrons.
neutrons.
elements.
2 ways to increase the magnetic field strength of an electro-magnet are to
Increase the current flow, reduce the number of coils
Increase the voltage, decrease the number of coils
Increase the number of coils and the current flow
Spread out the coils, replace iron core with rubber.
The diagram shows a current carrying wire producing a magnetic field as shown. What is the direction of the current in the wire?
up
down
left
right
The diagram shows an electron moving upward through a magnetic field directed toward you. What is the direction of the force on the electron?
into the page
out of the page
left
right
Using the right hand force rule, B represents
The current
The magnetic field
The direction of the force
The diagram shows a conventional current flowing upward in a wire between the poles of a magnet. Using the right hand force rule, the force on the wire would be:
towards you
away from you
to the left
to the right
Two wires carrying currents in opposite directions will:
Attract
Repel
Exert no force on one another
Move together
What is the maximum force experienced by a 5.0 meter long wire carrying 20 Ampere that is in a 4.0 x 10-5 Tesla magnetic field?
100 N
4 N
2 x 10-4 N
4 x 10-3 N
If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,
a. one-half as much voltage is induced.
b. the same voltage is induced.
c. twice as much voltage is induced.
d. four times as much voltage is induced.
Based on this picture of a transformer, which side will have a higher voltage?
Secondary
Primary
Both sides have the same voltage
Cannot be determined
What must occur for a magnetic field to induce an electric current?
The magnetic field must be really big
The magnetic field must be stable
The magnetic field must be changing
The magnetic field must be from a permanent magnet
Which of the following consists of devices all of which employ electromagnetic induction?
An acoustic guitar being played into a microphone.
A church pipe organ in a duet with a synthesizer.
An electric guitar, a microphone and speakers in a rock concert.
An electric generator powering an incandescent bulb.
