physics final

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49 Terms

1
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damping is

the slowing down of periodic motion due to friction

2
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the rest position of a mass on a spring is called its

equilibrium position

3
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which statement is true about simple harmonic motion

mechanical energy is conserved

4
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the period of a harmonic oscillator is

the time the oscillator takes to complete one cycle

5
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the acceleration of an oscillating mass on a spring is

always changing

6
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simple harmonic motion does not require

damping

7
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which would cause the period of an ideal spring-mass oscillating system to increase

using less stiff spring (smaller spring constant)

8
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the period of an oscillating mass on a spring is directly related to

the spring constant

9
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which is not an assumption we make for a simple pendulum to approximate simple harmonic motion

the pendulum’s period is related to the mass of the pendulum bob

10
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a pendulum approximates a simple harmonic oscillator provided that

the amplitude is small

11
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the period of a simple pendulum is

inversely proportional to the square root of the acceleration due to gravity

12
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for a physical pendulum the period depends on all of the following except the

pendulum bob’s initial velocity

13
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which is not an example of a damping force

inertia

14
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what kind of force does not act on a driven oscillator

a continuously applied force

15
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resonance is produced when an oscillating object

is driven in phase

16
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which of the following involves a significant transverse wave component to be created in the wave medium

bumping into a small aquarium

17
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longitudinal waves

travel fastest in solids

18
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which would cause the period of an oscillator to decrease

shortening the pendulum arm

19
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which statement characterizes longitudinal waves

they travel fastest in solids

20
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in simple harmonic motion

energy is conserved

21
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through which medium does sound travel faster

wood

22
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an oboe softly playing middle-C and a piano loudly playing middle-C have the same

frequency

23
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which of the following is not a characteristic of sound as perceived by the ear

velocity

24
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the perceived frequency of waves from a moving source compared to the actual frequency at the source is called the

doppler effect

25
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at what location on the earth does a Foucault pendulum not display precession of its swing

at the equator

26
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when two sets of waves in a medium are superimposed and the trough of one wave coincides with the trough of another wave the resultant wave amplitude will be

larger than either wave amplitude amplitudes

27
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in the Young’s double-slit experiment doing which of the following will cause the distance of the maxima from the center maximum to increase

position the slits closer together

28
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in the Young’s double-slit experiment which of the following will occur if the projection screen is moved farther from the slits

the distance between the maxima will increase

29
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which of the following is not an example of thin-film interference

rainbow colors form the surface of a CD

30
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which of the following is not a way to polarize light

selective diffraction

31
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a red sunset is most likely a result of polarization by

scattering

32
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why is the sky blue

particles in the atmosphere preferentially scatter blue light

33
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motion that repeats at a constant rate is called

periodic motion

34
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damping is the effect of _ on a vibrating system

friction

35
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the net force on an oscillating mass is called the force

restoring

36
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the maximum displacement of an oscillating object from equilibrium is called the

amplitude

37
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the SI unit of frequency is the

hertz

38
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as the stiffness of an oscillating spring increases its restoring force

increases

39
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the region where molecules spread apart in a longitudinal wave is called the

rare fraction

40
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the restoring force of a pendulum oscillator (for small angles) is dependent on the weight of the pendulum bob and its

displacement angle

41
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for the small initial displacement angles the period of a pendulum is dependent on the

length of pendulum arm

42
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the kinetic energy of a pendulum is the greatest at of the swing

bottom

43
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the harmonic oscillator that barely completes one cycle before damping stops motion is

critically damped

44
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the frequency at which a force is most effective in increasing the amplitude of an oscillating object is called the

natural oscillation frequency

45
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plucking a guitar string that emits the guitar’s natural frequency causes the guitar to exhibit

resonance

46
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in the case of the waves in a rippling flag the medium of the wave is the

fabric

47
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if a sound is loud then the difference in _ between adjacent compressions and rarefactions is __

pressure

large

48
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the difference in frequency between two sound waves results in different as sensed by the ear

pitches

49
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the apparent change in frequency of the light emitted by stars moving away from earth is an example of

doppler shift