Weegy: If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is: 40 degrees.
User: Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear?
Weegy: 1,000 Hz of wave in the air can be heard as an audible sound by the human ear.
User: The function of the eardrum is to
Weegy: The eardrum, or tympanic membrane, is a thin, cone-shaped membrane that separates the external ear from the middle ear in humans and other tetrapods.
User: Through which of the following mediums is the velocity of a sound wave the greatest?
Weegy: The velocity of a sound wave is the greatest through steel.
User: Which of the following values represents an index of refraction of an actual material?
Weegy: The value 1.25 represents an index of refraction of an actual material.
User: Rarefaction occurs only in a ____ wave.
Weegy: Rarefaction occurs only in a LONGITUDINAL wave.
User: The change in pitch of a train's horn as it passes while you're standing still can be explained by
Weegy: The change in pitch of a train's horn as it passes while you are standing still can be explained by the DOPPLER EFFECT.
User: Your brother is insisting that you'll never hear a sound produced behind a barrier wall at the end of your yard. You notice that the door within the wall is open and quickly explain to him that the sound will be able to reach you due
Weegy: Your brother is insisting that you'll never hear a sound produced behind a barrier wall at the end of your yard. You notice that the door within the wall is open and quickly explain to him that the sound will be able to reach you due to: diffraction. [
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User: The wavelength of a wave is the distance between
Weegy: The wavelength of a wave is the distance between two consecutive crests.
User: In which of the following conditions would a person not hear an echo?
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