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Physics Final Review II
Test Description: Final Exam
Instructions: Answer all questions to get your test result.
1) A circuit has a continuous path through which carge can flow from a voltage source to a device that uses electrical energy. What is the name of this type of circuit?
A
Short Circuit
B
Closed Circuit
C
Open Circuit
D
Circuit Schematic
2) A flashlight bulb with a potential differnece of 4.5 V across it has a resistance of 8 ohms. How much current is in the bulb filament?
A
9.4 A
B
0.56 A
C
1.8 A
D
36 A
3) In general sound travels faster through
A
Solids
B
Gases
C
Empty Space
D
Liquids
4) Which of the following is the tendency of an object to maintain its state of motion?
A
Velocity
B
Inertia
C
Acceleration
D
Force
5) When a car's veloicyt is positive and its acceleration is negative what is happening to the car's motion?
A
The car remains at rest
B
The car slows down
C
The car speeds up
D
The car travels at constant speed
6) As the temperature of a substance increases its volume tend to increase due to
A
Thermal expansion
B
Thermal equilibrium
7) In which of the following sentinces is work used in the scientific sense of the word?
A
A scientist works on an experiment in a lab.
B
Sam and Rachel pushed hard, but they could not do work on the car.
C
Holding a heavy box requires a lot of work.
D
Joun learned that shoveling snow is hard work.
8) A freight train rolls along a track with considerable momentum. If it rolls at the sam espeed bu thas 2x as much mass its momentum is
A
doubled
B
unchanged
C
zero
D
quadrupled
9) The difference between impulse and impact force involves the
A
difference between acceleration and velocity
B
time the force acts
C
mass and its effect on resisting a change in momentum
D
distance the force acts
10) A rifle recoils from firing a bullet. The speed of the rifle's recoil is small because the
A
Rifle has more mass
B
Momentum of the rifle is smaller
C
Momentum is mainly concentrated in the bullet
D
Force against the rifle is smaller than the bullet
11) A gain in speed each second for a freely-falling object is about
A
0
B
5 m/s
C
10 m/s
D
depends on intial speed
12) At one instant an object in dree fall is moving downward at 50 m/s. One second later its speed is about
A
25 m/s
B
55 m/s
C
50 m/s
D
60 m/s
13) An upright broom is easier to balance when the heavier end is
A
Same either way
B
Nearest your hand
C
Highest, farthest from your hand
14) The rotational inertia of your leg is greater when your leg is
A
Straight
B
Bent
C
Same either way
15) When water is turned on in a shower, the shower cutrain moves towards the water. This has to do with
A
Capillary action
B
Surface tension
C
Heat capacity
D
Pressure of a moving fluid
16) The lowest temperature possible in nature is
A
0 degrees C
B
4 K
C
-273 degrees C
17) The first law of thermodynamics is a restatment of the
A
Law of heat addition
B
Carnot cycle
C
Conservation of energy
D
Principle of entropy
18) Entropy measures
A
temperature at constant volume
B
messiness
C
temperature at constant pressure
D
temperature as pressure increases
19) A wiggle in time is a
A
Wave
B
Vibration
20) The range of human hearing is from about
A
20 to 20,000 Hz
B
Depends on the person
C
40 to 40,000 Hz
D
10 to 10,000 Hz
*select an answer for all questions
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