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Physics Final Review
Test Description: Final Exam
Instructions: Answer all questions to get your test result.
1) Which of the following is a physical quantity that has a magnitude but not direction?
A
Scalar
B
Vector
2) The highness or lowness of a sound is perceived as
A
Compression
B
Pitch
C
Ultrasound
D
Wavelength
3) Energy transferred as heat occurs between two bodies in thermal contact when they differ in which of the following properties?
A
Specific heat
B
Mass
C
Density
D
Temperature
4) Which of the following is the cause of an acceleration?
A
Speed
B
Velocity
C
Inertia
D
Force
5) An attracting force occurs between two charged objects when the charges are of
A
Equal magnitude
B
Like signs
C
Unequal magnitude
D
Unlike signs
6) Which of the following energy forms is associated with an object due to its position?
A
Kinetic energy
B
Total energy
C
Potential energy
D
Positional energy
7) Which of the following has teh greates power output?
A
A weightlifter who lifts a 250 N weight 2.1 m in 3.0 s.
B
A crane that lifts a 25, 000 N beam at a speed of 1.2 m/s
C
A mechanic's lift that raises a 12,000 N car 2.1 m in 12 s.
D
A car engine that does 1200 J of work in 5 s
8) What is the speed of an object at rest?
A
1 m/s
B
9.8 m/s
C
0 m/s
D
9.81 m/s
9) Which of the following is a devie designed to open an overloaded circuit and prevent overheating
A
magnet
B
transformer
C
resistor
D
Circuit breaker
10) If two small beakers of water, one at 70 degrees C and one at 80 degrees C, are emptied into a large beaker, what is the final temperature of the water?
A
less than 70 degrees C
B
It will fluctuate
C
more than 80 degrees C
D
between 70 and 80 degrees C
11) The perceived loudness of a sound is measured in
A
Watts/sq. meter
B
Watts
C
Hertz
D
Decibels
12) What is the kinetic energy of a 0.135 kg baseball thrown at 40 m/s?
A
108 J
B
87 J
C
216 J
D
54 J
13) A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter's acceleration?
A
0.69 m/s/s
B
0.22 m/s/s
C
3.2 m/s/s
D
4.6 m/s/s
14) Which statement about the acceleration of an object is correct?
A
Inversely proportional to the force and directly proportional to the mass
B
Inversely proportional to the force and the also the mass
C
Directly proportiaonl to the force and also the mass
D
Directly proportional to the net force and inversely proportional to the mass
15) If you are on a train, how will the pitch of the train's whistle sound to you as the train moves?
A
Become lower
B
Not change
C
Become higher
D
Become higher then lower
16) What is the potential difference across a 5 ohm resistor that carries a current of 5 amps?
A
1 V
B
10 V
C
100 V
D
25 V
17) A child moving at constant velocity carries a 2 N ice cream cone 1 M across a level surface. What is the net work done on the ice cream cone?
A
0.5 J
B
0 J
C
20 J
D
2 J
18) Which of the following situations represents a negative displacement? (Assume positive position is measured vertically upward on y axis)
A
A cat jumps from the ground onto a limb
B
A cat jumps from a lower tree limb to a higher limb
C
A cat jumps from a tree limb to the ground
D
A cat stands on a tree limb
19) What is the potential energy of a 1 kg mass 1 m above the ground?
A
96 J
B
1 J
C
10 J
D
9.8 J
20) Which of the following has the greatest momentum?
A
A tortoise with a mass of 275 kg moving at a velocity of 0.55 m/s
B
A roadrunner with a mass of 1.8 kg moving at a velocity of 6.7 m/s
C
A turtle with a mass of 91 kg moving at a velocity of 1.4 m/s
D
A hare with a mass of 2.7 kg moving at a velocity of 7.5 m/s
*select an answer for all questions
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