• #### 1.  A person is standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s. The frequency of the sound the person hears will

• decrease
• remain the same
• increase
• change by 20 Hz.

• 15
• 6000 m
• 15 m
• 6000
• #### 3.  An object is attached to a vertical spring and bobs up and down between points A and B.  Where is the object located when its kinetic energy is a maximum?

• at either A or B
• midway between A and B
• one-third of the way between A and B
• one-fourth of the way between A and B
• #### 4.  Sound is an example of a

• transverse wave
• longitudinal wave
• focal wave
• electromagnetic wave
• #### 5.  A student holds two vibrating objects. Object A is vibrating faster than object B. Which statement is true?

• A is louder than B
• B is louder than A
• A will have a higher pitch than B
• B will have a higher pitch than A

• 0.4 m
• -0.4 m
• 2.5 m
• -2.5 m
• #### 7.  A(n) _____ is a good mathematical model for representing transverse waves.

• tangent curve
• exponential curve
• parabolic curve
• sine curve

• 0.50 s
• 2 s
• 0.5 Hz
• 2 Hz

• A
• B
• C
• D

• solid
• liquid
• gases
• #### 11.  What is common with all electromagnetic and mechanical waves?

• They travel at the same speed
• They transfer energy
• They are all longitudinal waves
• They are all transverse waves

• 2 sec
• 12 sec
• 8 sec
• 10 sec

• 0.00200 m
• 0.0196 m
• 0.0816 m
• 0.800 m
• #### 14.  A student in a band notices that a drum vibrates when another instrument emits a certain frequency note. This phenomenon illustrates

• reflection
• refraction
• resonance
• doppler effect
• #### 15.  The number of wavelengths that pass a point each per second is:

• frequency
• period
• longitudinal
• transverse wave

• 0.26 sec
• 1.645 sec
• 0.26 hz
• 1.645 hz
• #### 17.  An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could

• double the amplitude of vibration
• double the force constant (spring constant) of the spring
• double both the amplitude and force constant (spring constant).
• double the mass
• #### 18.  The speed of a sound wave...

• depends on amplitude
• depends on the medium
• depends on wavelength
• none of the above
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