Download Second Semester Final Practice

Second Semester Physics Review
1. A spring on a pin ball machine launcher stores a certain amount of potential energy when it is
compressed. If the spring is compressed twice as much, how much more potential energy will it will store?
a) twice as much
b) half as much
c) four times as much
d) none of these
2. A mass is suspended from a vertical spring. It is set into oscillation by pulling it down a short distance
and then releasing it. At which one of the labeled points, during the subsequent motion, will the
acceleration be zero?
3. The top graph below represents the variation of displacement with time for a particle executing SHM.
Which curve in the represents the variation of velocity with time for the same particle?
1. The time for one wave to pass a point in space is called its
a) frequency
b) period
c) wavelength
d) amplitude
2. A unit for frequency is
a) s-1
b) m
c) s
d) m-1
e) cycles/m
a
1
b
2
c
3
d
4
e
none of these
3. The period of an ocean wave is 5 seconds. What is the wave's frequency?
a) 5 Hz
b) 1.0 Hz
c) 0.2 Hz
d) 0.1 Hz
4. An ocean wave has a frequency of 4 hertz and a wavelength of 4.3 m. What is the wave's speed?
a) 1.75 m/s
b) 17.2 m/s
c) 0.93 m/s
d) 0.05 m/s
6.
7.
8.
9.
10. When a wave pulse on a high density string hits a boundary with a low density string it will
a) partially reflect inverted and also carry on at a higher speed and longer wavelength
b) partially reflect upright and also carry on at a higher speed and longer wavelength
c) partially reflect upright and also carry on at a lower speed and shorter wavelength
d) partially reflect inverted and also carry on at a lower speed and shorter wavelength
e) not change at all
11.
12.
12.
13. The advantage of AM radio waves over FM radio waves is that…
A.
B.
C.
D.
AM radio waves have long wavelengths so can diffract around obstacles in their way
AM radio waves have high frequencies so can be modulated to carry a lot of information
both A and B are true
None. AM radio waves don’t have any advantage over FM waves.
14.
15. Sound waves in air are a series of:
a) high and low pressure regions
c) periodic condensations and refractions
b) periodic disturbances
d) all of the above
e) a and b
16. A bugle can be thought of as an ____________ tube. If the bugle were straightened out, it would be
265cm long. If the speed of sound is 343 m/s find the lowest frequency that is resonant in the bugle?
a) 0.32 Hz
b) 0.65 Hz
c) 32.3 Hz
d) 64.7 Hz
e) 129.4 Hz
17. Sound analysis of a note played on a musical instrument show two consecutive overtones at
786 Hz and 1310 Hz. The note played is has a fundamental frequency of:
a) 131 Hz
b) 262 Hz
c) 524 Hz
d) 786 Hz
e) other
18. If two sounds at 100 Hz and 1000 Hz are perceived with the same loudness:
a) the 100 Hz sound must be at a higher intensity level
b) the 1000 Hz sound must be at a higher intensity level
c) they are both at the same intensity level
19. Compared to a magnitude 7.5 earthquake, a magnitude 8.5 earthquake carries more energy by a factor
of:
a) 1
b) 10
c) 30
d) 2.8x10 8
e) 3.5x1012
20. The property of sound called intensity is:
a) proportional to the rate at which sound energy flows through an area normal to the direction of
wave propagation.
b) inversely proportional to the rate at which sound energy flows through an area normal to the
direction of propagation.
c) proportional to the period of the sound wave.
d) proportional to the frequency of a sound wave.
e) proportional to the amplitude of a wound wave.
21. Compared to a spherical wave at distance r from a source, a wave at 1/4 r will have an
intensity:
a) 4x’s more
b) 16x’s more c) 4x’s less d) 16x’s less e) other answer
22. A police car siren is 1500 Hz when at rest. If the car moves away from an observer at 30
m/s, what frequency does the observer detect?
a) 1644 Hz
b) 1379 Hz
c) 1500 Hz
d) 1200 Hz
e) other
23. If the police car traveling at 40 m/s chases a speeder traveling at 30 m/s, what frequency will
the speeder hear?
a) 1226 Hz
b) 1461 Hz
c) 1550 Hz
d) 1847 Hz
e) other
24. The shock wave produced by an aircraft moving through air is shown below. Determine
the mach # of the plane.
a
1
b
1.5
c
2
d
2.5
e
3
25. For the last question, the half-cone angle of the shock wave is
a) 0.4110
b) 23.60
c) 35.70
d) 43.20
e) 68.20
26. How much energy does a photon of red light that has a wavelength of 640 nm contain?
a) 3.2 eV
b) 2.5 eV
c) 1.9 eV
d) 1.3 eV
27. Compared to the average speed of light in water, the average speed of light in air is:
a) less
b) faster
c) the same
28. Dispersion of light into its many component colors in glass is due to:
a) the difference in speed of each color in a vacuum
b) natural resonance of glass
c) the angle at which the light enters
d) internal reflection within the glass
29. Diffuse reflection occurs when the elevation of the surface is:
a) 
b) /2
c) /4
d) /8
30. The image in a plane mirror is:
a) virtual , reversed b) virtual, right way c) real, reversed
d) real, right way
31. If an object is placed between 2F and F in front of a concave mirror the image will be:
a) bigger, inverted
b) smaller, inverted c) bigger, right way d) smaller, right way e) same
32. A 4.0 cm high candle is placed 10.0 cm from a concave mirror having a focal length of 16.0
cm. What is the location of the image?
a) -0.037 cm
b) 0.163 cm
c) –26.7 cm
d) 6.15 cm
e) other
33. The refractive index of diamond is 2.42. If light enters a diamond slab at 23 O to the normal
what is its angle (relative to the normal) in the diamond?
a) 9.29O
b) 0.105O
c) 6.03O
d) 0.95O
e) other answer
34. In her bedroom, Mia has a fiber optic light that glows as hundreds of fiber optic cables are lit
from below. If each fiber optic cable has an index of refraction of 1.48, at what critical angle
must light enter the cable in order for total internal reflection to occur?
a) 0.67O
b) 1.48O
c) 21.3O
d) 42.5O
e) other angle
35. To correct their vision, far-sighted people must use
a) convex lenses
b) concave lenses
c) prisms
d) reflectors
36. An object is 10.4 cm tall, and 4.8 cm in front of a diverging lens. The image is 4 cm from the
lens. How tall is the image?
a) 12.5 cm
b) 8.7 cm
c) 5.4 cm
d) 1.8 cm
37. Sometimes after light passes through a lens, there are tiny bands of color around the edge of the image.
This is due to:
a) chromatic aberration
b) astigatism
c) prismatic aberration
d) spherical aberration
38. Who came up with the idea of electric charge?
a) Coulomb
b) Volta
c) Ampere
d) Faraday
e) Ohm
f) Franklin
39.
40.
41. An uncharged sphere on a glass rod is placed near a negatively charged Van de Graaf generator. A
student then quickly touches the sphere for a second. After the sphere is moved away from generator
what charge remains on it?
a) positive
b) negative
c) neutral
42. A +6C charge is placed 2cm from a - 4C charge. The force on the - 4C charged particle due to the
+6C particle is:
a) 0.108 N
b) 0.054 N
c) 10.8 N
d) 540 N
43. A small positively charged object near a positively charged sphere is moved one third as far away. The
electric force on the small object:
a)
b)
c)
d)
e)
44.
45.
46.
increases by a factor of 3
increases by a factor of 9
decreases by a factor of 3
decreases by a factor of 9
stays the same
47. At what distance from a point charge of 8.0C would the electric potential be 4.2x104 V?
a) 0.58 m
b) 0.76 m
c) 1.7 m
d) 2.9 m
e) other
48. A charge of 12 C passes through an electroplating apparatus in 2 min. What is the average
current?
a) 0.1 A
49.
b) 6 A
c) 24 A
d) 0.2 A
50.
51. A 150 W light bulb running on 110 V draws how much current?
a) 0.73 A
b) 1.4 A
c) 2.0 A
d) 15 A
52. How much does it cost to operate a 25 W soldering iron for 8 hrs, if energy costs $0.08/kWhr?
a) $1.50
53.
b) $0.25
c) $0.16
d) $0.016
54. A 3 resistor is connected in parallel with a 6 resistor. This combination is connected in
series with a 4 resistor. The resistors are connected to a 12V battery. How much power is
dissipated in the 4 resistor?
a) 5.3 W
b) 12 W
c) 2.7 W
d) 16 W
e) other
55. Who came up with the theory that led to the development of the electric motor?
a) Faraday
b) Henry
c) Edison
d) Tesla
e) Oersted
56. What direction is the current carrying wire deflected when positioned in the magnetic field as
shown?
XXXX XXXX
a) into the page
XXXX XXXX
b) out of the page
XXXX XXXX
c) left
XXXX XXXX
d) right
XXXX XXXX
e) up
f) down
57.
58.
59. A household transformer is used to take 120 V down to 6 V. What is the ratio of turns on the primary
to turns on the secondary?
a) 20:1
60.
b) 1:20
c) can’t tell with information given
61.
62.
63.
64. The principle reason voltage is induced in the loops of a generator coil is that the..
a) loops are rotating, changing the amount of magnetic field within the loops.
b) size of the loops is changing
c) the magnet’s strength is changing
d) magnet is rotating
e) all the above
65. Yellow light is shone on a blue filter. The color seen on a screen is…
a) green
b) blue
c) black
d) white
e) other color
Accelerated Physics Second Semester Review
Answers
SHM
1. C
1. B
2. A
3. C
4. B
5. B
6. B
7. A
8. A
9. C
10. B
11. C
12. D
13. A
14. B
15. E
16. C
17. B
18. A
19. C
20. A
21. B
22. B
23. C
24. D
25. B
26. C
27. B
28. B
29. D
30. A
31. A
32. C
33. A
34. D
35. A
36. B
37. A
38. F
39. C
2. C
3. C
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
B
A
D
B
C
D
A
C
A
A
B
B
D
C
D
E
C
B
B
A
A
B
B
C
A
C