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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
Closed Circuit
B
Circuit Schematic
C
Open Circuit
D
Short Circuit
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
0.56 A
B
9.4 A
C
36 A
D
1.8 A
3) In general sound travels faster through
A
Liquids
B
Empty Space
C
Gases
D
Solids
4) Which of the following is the tendency of an object to maintain its state of motion?
A
Velocity
B
Force
C
Acceleration
D
Inertia
5) When a car's veloicyt is positive and its acceleration is negative what is happening to the car's motion?
A
The car speeds up
B
The car remains at rest
C
The car slows down
D
The car travels at constant speed
6) As the temperature of a substance increases its volume tend to increase due to
A
Thermal equilibrium
B
Thermal expansion
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
Holding a heavy box requires a lot of work.
C
Joun learned that shoveling snow is hard work.
D
Sam and Rachel pushed hard, but they could not do work on the car.
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
mass and its effect on resisting a change in momentum
B
time the force acts
C
difference between acceleration and velocity
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
Force against the rifle is smaller than the bullet
B
Momentum of the rifle is smaller
C
Momentum is mainly concentrated in the bullet
D
Rifle has more mass
11) A gain in speed each second for a freely-falling object is about
A
depends on intial speed
B
5 m/s
C
0
D
10 m/s
12) At one instant an object in dree fall is moving downward at 50 m/s. One second later its speed is about
A
50 m/s
B
60 m/s
C
55 m/s
D
25 m/s
13) An upright broom is easier to balance when the heavier end is
A
Same either way
B
Highest, farthest from your hand
C
Nearest your hand
14) The rotational inertia of your leg is greater when your leg is
A
Bent
B
Straight
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
Heat capacity
B
Capillary action
C
Pressure of a moving fluid
D
Surface tension
16) The lowest temperature possible in nature is
A
4 K
B
0 degrees C
C
-273 degrees C
17) The first law of thermodynamics is a restatment of the
A
Law of heat addition
B
Conservation of energy
C
Principle of entropy
D
Carnot cycle
18) Entropy measures
A
temperature at constant pressure
B
messiness
C
temperature as pressure increases
D
temperature at constant volume
19) A wiggle in time is a
A
Vibration
B
Wave
20) The range of human hearing is from about
A
40 to 40,000 Hz
B
20 to 20,000 Hz
C
10 to 10,000 Hz
D
Depends on the person
*select an answer for all questions
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