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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
Open Circuit
B
Closed Circuit
C
Circuit Schematic
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
1.8 A
C
9.4 A
D
36 A
3) In general sound travels faster through
A
Liquids
B
Gases
C
Solids
D
Empty Space
4) Which of the following is the tendency of an object to maintain its state of motion?
A
Inertia
B
Force
C
Acceleration
D
Velocity
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 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
Joun learned that shoveling snow is hard work.
C
Holding a heavy box requires a lot of 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
quadrupled
B
unchanged
C
doubled
D
zero
9) The difference between impulse and impact force involves the
A
mass and its effect on resisting a change in momentum
B
distance the force acts
C
difference between acceleration and velocity
D
time the force acts
10) A rifle recoils from firing a bullet. The speed of the rifle's recoil is small because the
A
Momentum is mainly concentrated in the bullet
B
Rifle has more mass
C
Force against the rifle is smaller than the bullet
D
Momentum of the rifle is smaller
11) A gain in speed each second for a freely-falling object is about
A
0
B
depends on intial speed
C
10 m/s
D
5 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
55 m/s
C
60 m/s
D
25 m/s
13) An upright broom is easier to balance when the heavier end is
A
Nearest your hand
B
Highest, farthest from your hand
C
Same either way
14) The rotational inertia of your leg is greater when your leg is
A
Bent
B
Same either way
C
Straight
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
Pressure of a moving fluid
C
Heat capacity
D
Surface tension
16) The lowest temperature possible in nature is
A
4 K
B
-273 degrees C
C
0 degrees C
17) The first law of thermodynamics is a restatment of the
A
Conservation of energy
B
Principle of entropy
C
Carnot cycle
D
Law of heat addition
18) Entropy measures
A
messiness
B
temperature at constant volume
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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