Homework answers / question archive / Utah State University COMD 3400 Section 1 1)What are the two requirements for a medium to propagate sound? Sound through air is propagated as a In a wave, kinetic energy is at its maximum at In a sound wave, molecules make this motion through the air Displacement/ amplitude describes: Frequency describes Period describes Frequency is measured in At 90 degrees of a sine wave, vibration is at What is the speed of sound at sea level? A shorter wavelength indicates: A periodic wave: If two waves of equal frequency and amplitude combine 180 degrees out of phase, what occurs? Noise that has all frequencies at equal amplitudes is known as Noise that has low frequencies at higher amplitudes than high frequencies is known as The reference value for the intensity level scale is Calculate the db spl of a sound that is 800 uPa : What is the frequency of a sound that has a wavelength of 1

Utah State University COMD 3400 Section 1 1)What are the two requirements for a medium to propagate sound? Sound through air is propagated as a In a wave, kinetic energy is at its maximum at In a sound wave, molecules make this motion through the air Displacement/ amplitude describes: Frequency describes Period describes Frequency is measured in At 90 degrees of a sine wave, vibration is at What is the speed of sound at sea level? A shorter wavelength indicates: A periodic wave: If two waves of equal frequency and amplitude combine 180 degrees out of phase, what occurs? Noise that has all frequencies at equal amplitudes is known as Noise that has low frequencies at higher amplitudes than high frequencies is known as The reference value for the intensity level scale is Calculate the db spl of a sound that is 800 uPa : What is the frequency of a sound that has a wavelength of 1

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22. When two waves combine, resulting in the cancellation of reduction of the energies of the sound waves it is termed
23. As mass increases, the frequency of vibration
24. This portion of the temporal bone houses the external auditory meatus:
25. The most inferior feature of the pinna is the
26. Arnold’s reflex is causes by irritation of cranial nerve
27. Observed through the ear canal, a healthy tympanic membrane shoulder appears
28. Which of the following is not a layer of the tympanic membrane?
29. At the center of the tympanic membrane which feature will you find?
30. Which ossicle does not have a neck?
31. Which ossicle has a body?
32. Which two bones do not articulate with each other?
33. The tensor tympani muscle inserts on the
34. The stapedius muscle insets on the
35. Stimulus in left ear: no ipsi, present contra. Stimulus in right ear: present ipsi, no contra. :
36. Which landmark is not found on the medial wall?
37. The portion of the Eustachian auditory tube closest to the tympanic cavity is
38. The purpose of the eustachian tube is to
39. Human hearing is most sensitive in the
40. The tympanic membrane to oval window ratio is