# Physics Final Exam

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1. Which of the following is a fluid?
a. helium
b.ice
c.iron
d.gold
a. helium
2. Which of the follwing is not a fluid?
cabon dioxide
hydrogen
sea water
glass
b. hydrogen
3. because of buoyan force act opposite direction of gravity,
object supmerged in water have net force smaller than their weight
4. which of the following stements about floating objects is correct?
the buoyant force equals the objects weight
5. which statement is not correct bout fluids?
fluid has a definite shape
6. which of the following statents about completely submerged objects resting on the ocean bottom is correct?
the apparent weight of the object depends on the objects density.
7. the temperature in container of fluid is
a measure of the avg kinetic energy of particles of fluid
8. Increasing the temp of fluid
increases the speed of particles
9. for an ideal fluid flowing through a horizontal pipe Bernoulli;s equattion stat the sume of pressure and energy per unit volume along the pipe does which of the following
remains constant as pipe diameter increases
10. municipal water supply is provided by a tall tower. Water from this tower flows to a building. How does the water flow of the ground floor fauset compare to an second floor fauset?
water flows more rapidly of the ground floor faucet
11. person is standing near the edge of a railroad track when a high speed train passes. Ther person tends to be . . .
pulled toward the train
12. which is not a bariable that decribes teh macroscopic state of an ideal gas
velocity
13. whcich is not an example of approximate simple harmonic motion
a ball bouncing on the floor
14. triplin the displacement from equilibrium of an object in simple harmonic motion will change the magnitude of the objects maxx acceleration by what factor
3
15. a mass attached to a spring vibrates back and forth. At equilibrium postion
the velocity reaches a max
16. a mass attched to a spring vibrates back and forth. and mas displacemtnt the spring force and the
acceleration reach a max
17. a simple pendulum swings in simpl harmonic mostion at max displacment
the accelration reaches a max
18. the angle bw the string of pendulum at its equilibrium position and at its masimum displacement is its
amplitude
19. for a mas hanging form a spring the max displacement the spring is stretched or compressed from its equilibrium postion to
amplitude
20. which of the following is the time it takes to complete a cycle of motion
period
21. which is the following is the number of cyucles or vibration per unit of time
frequency
22. how are frequency and period realtated in simpe harmonic motion
they are inversely related
23. by what factor should the length of simple pendulum be changed if the period of vibrations were to be tripled
9
24. whcih of the following is single nonperiodic disturbance
pulse wave
25. which is following is wave whose source is some from of repeating motion
periodic wave
26. on ed of taunt rope is fixed to a ost what type of wave is demonstrated in the free end is quickly raised
pulse wave
27. on the ongitudeianl wave the compressed regions corespond to
crest
28. the wave for of longitudinal wave (stetched region ) coreespond to
troughs
29. what happens to the energy carried in a givin time interval by a mechanical wave when the wave's amp. is doubled
in increases by a factor of 4
30. what happens ot energy carried in a given time tinterval by mechanical wave whent he wave's amp is halved
decreases by a factor of 4
31. tow waves can occupy the same b/c waves are
displacements of matter
32. superposition of mechanical waves can be observed in movement of
waves in a ripple tank
33. which of the following is the enterference that results when individual displacements on the same side of the equilibrium position are added together to form the resultant wave
constructive
34. which of following is interferecne that results when individual displacement on opp sides of the equilibrium postion are added together to form the resultant wave
destructive
35. 2 waves going toward eachother with on big hump and on small hump will cause what type of interfernce
partial constucitive
36. 2 wave goign at eachother with a big hump and a small dip will cuase
partial dectrutive
37. 2 wave going at eachother with an equal hump and dip will cause
complete destructive
38. consider to identical wave pluses on rope suppose the first reachees the dixed end of the rope is reflected back and the n meets the scond pulse when the pulses overlap exactly the supersosition principle perdicts taht the amp of resultan pulse at monment will
factor 0 times the amp of one the orginal pulses
39. fixed boundry waves are
relected and inverted
40. a studend send pulse traveling on rope wiht one end attached to post studedn will observe
the pulse will be reflected and inverted is rope is fixed to the post
41. standing waves are produced by periodic waves of
same frequencey amplidude and wavelength traveling in opp dricetions

42. how many nodes and antinoded are shown
• 2 noded,
• 3 antinodeds
43. fewest number of nodes a standing wave can have
2

44. how many nodes and antinode are show in standing wave above
• five nodes
• four antinodes
45. sound waves
are longitudinal waves
46. the rough of the since curve used to represent a sond wave correspond to
raefaction
47. whcich of th following is region opf a longituinal wave in whcih the density and pressure are greater than normal
compression
48. which of the followin is the region of a longitudinal wave in which the density and pressure are laess than normal
rarefaction
49. how haigh or low we percive a sond to be is defined at
pitch
50. which of the following is the number of cycles per unit of time
frequency
51. pitch refers
to many vibration per second perceived by human ear
52. whish has a higher speed of sound
copper
53. which statement about sound waves is correct
they generally travel faster through solids than gasses
54. which of the following are series of comperssion in graphical representation of spherical and plane waves
wave fronts
55. as a train stats from rest hen accelerates down the track coming toward an observer faster and faster the frequence of the sound waves coming toward th eobserver will
constantly increase
56. doppler effect occurs with
all waves
57. as sound source approahes and the moves past a stationary observer the observer will hear
sudden drop in pitch
58. if yo hear th pitch of sieren become lower you know that
the sourse has just passes you is acceleratin away
59. if you are on train ho wwill pitch of the whistle sound as the train moves
will not change
60. property of sound call intensity is
proportional to the rate at wich sound energy flows through an area normal to dircetion of propagation
61. the intensity of sound is increased by a factor of 100 the new decible level will be
20 units greater
62. what is intensity of sound wave in relation ot the intensity aat the thershold of hearing
resonance
63. which of the followin is the ocndition that exists when the frequency of a force applid to system matches the natural frequence of vibration of the system
resonance
64. sound twince the intensity of the faintest audible sound is not perceived as twice as loud b/c the sensation of ludness is
approx. longarithmic in human ear
65. for standing wave in the air column in a pipe that is open at both ends, ther must be at least
two aninoded on one node
66. both end of pipe are open
all harmonics are present
67. in one end of pice is closed
onle odd harmonics are present
68. effecto of sound on the ear are loudness pictch and quality. Loudness is effect of _________, pitch is an effect of __________, and timpbre is an effect of __________
intensity, frequency , harmonic content
69. which of the followin si the quality of a steady musical sond that is the result of a mixture of harmonics present at different intensidties
pitch
70. describes and instruments own characteristic full sond and mix of harmonics at varying intensities
timbre
71. phenomenon in created by 2 tuning forks side by side that emit frequences tht differ by only a small amount
beats
72. beats are formed by interfernce of 2 waves
of slightly diffrent frequencies traveling in same direction
73. which portion of electromagnetic spectrum is used in a telvision
74. electromanetic spectrum used in aircraft navigation
microwaves
75. which portion o fhte elctromagnetis spectrum is used to sterilize medical instruments
ultraviolet ligh
76. which portion of electromagnetic spectrum is used to id fluoresent mineralst
ultraviolet light
77. in a vacuum electromagnetic radiation of short wavelenghts
travels as fast as radiation of long wavelenghts
78. when red light is compred with vilet light
red light travels faster than violet light
79. if yo know the wvelenght of any form of electromagnetic radiation you can determine its frequency b/c
all wavelenght trave at same speed
80. relation ship b/w frequence wavelenght and speed holds for light waves b/c
fiffrent form s of elctromagnetic radiation travel at diffrenet speeds
81. farther ligh is form source
the more spread out light becomes
82. reading a ook and move twice as far form light source hw does brightness compare
1/4
83. snow reflects ammost all of light incedent upon it however a single beam of light is not relfected in the form of paralled rays. this and example of ________ relectio of a _______ surface
diffuse, rough
84. highly polished finsh on a new car provides a __________- surface for _____________ reflection
smooth specular
85. when incoming rays of light strike a flat mirror at an angle close to the surface of mirror the reflected rays are
close to mirror's surface
86. when straight line is drawn perpendicular to flat miior the point where an incoming ray strike the mirror's surfcae the angles of incedence and reflection are measured from the normal and
the angles of incidence and frelection are equal
87. if ligh ray strikes a flat mirror at and angle of 27 degrees from normal the relected ray will be
27 degrees form the normal
88. image of obj in flat miror is always
same size as object
89. when two parllel miiror are places os they face one onther ___________ images from thsi is b/c the mage in one mirror becomes the _________ for the other
• multiple
• object
90. which of the following best decribes the image produced by a flat mirror
virtual upright and magnification equal to one
91. when the reflection of an obj seen in flat mirror the distiance form mirro to image depends on
the distance form obj to the mirror
92. in a concave mirror an obj in bw the focal point and mirror would be
virual and enlarged and upright
93. in a convex mirror an obj in bw the focal point and mirror would be
virtual reduced and upright
94. best decribes image of concave mirror when obj is greater distance the twice the focal point distance from mirror
real inverted and magnificaiont less than one
95. when relection on and obj is falst mirro the image is
virtual and upright
96. parabolic mirror insteat of sherical mirror can be used to reuce the occurence of
spherical aberration
97. red light and greend light shine on same spot of white paper the spot apperars
yellow
98. not a dditive primary color
yellow
99. color ellow pigment subtract form white lighe
blue
100. which is not a primary subtactive color
blue
 Author: kolbyg ID: 83940 Card Set: Physics Final Exam Updated: 2011-05-05 10:57:19 Tags: physics VHS Folders: Description: study guid for my physics final Show Answers: