A plane wave traveling from air into hydrogen gas through a thin separating membrane is refracted...
A plane wave traveling from air into hydrogen gas through a thin separating membrane is refracted by 40 degrees from its original direction. Speed of sound air = 343 m/s and Speed of sound for hydrogen = 1270 m/s.
- [2 pts] What is the angle of incidence in the air? [ANS: 11.8°]
- [3 pts] What is the sound power transmission coefficient? [ANS: 0.854]
Homework Answers
b) Sound power transmission coefficient = transmitted energy/ incident energy
(insufficient data for this part)
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A plane wave traveling from air into
hydrogen gas through a thin separating membrane is refracted...
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a...
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a speed of sound of 1666m/s? at an acoustic impedance of the 7) Calculate the amplitude and phase of the reflection coefficient for a plane wave incident on a sediment with density 1200 kg/m', sound speed 1700 m/s at an angle of incidence...
water interface (the surface of the lake), it is partly reflected back into the air and...
water interface (the surface of the lake), it is partly
reflected back into the air and partly refracted
or transmitted into the water. This explains why on the surface of
a lake sometimes you see the reflection of the surrounding
landscape and other times the underwater vegetation.
These effects on light propagation occur because light travels at
different speeds depending on the medium. The index of refraction
of a material, denoted by n, gives an indication of the speed of...
Partner: Date Name 11 Snell's Law Introduction When light passes from one material to another it ...
Partner: Date Name 11 Snell's Law Introduction When light passes from one material to another it is always bent away from its original path. This process is known as refraction and the change in direction depends on the change in optical density (or refractive index) of the two materials. A larger change in refractive index results in a larger change in angle between incoming and outgoing light beams. A light beam bends closer to the normal in the material with...
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a speed of sound of 1666m/s? at an acoustic impedance of the 7) Calculate the amplitude and phase of the reflection coefficient for a plane wave incident on a sediment with density 1200 kg/m', sound speed 1700 m/s at an angle of incidence...
water interface (the surface of the lake), it is partly
reflected back into the air and partly refracted
or transmitted into the water. This explains why on the surface of
a lake sometimes you see the reflection of the surrounding
landscape and other times the underwater vegetation.
These effects on light propagation occur because light travels at
different speeds depending on the medium. The index of refraction
of a material, denoted by n, gives an indication of the speed of...
Partner: Date Name 11 Snell's Law Introduction When light passes from one material to another it is always bent away from its original path. This process is known as refraction and the change in direction depends on the change in optical density (or refractive index) of the two materials. A larger change in refractive index results in a larger change in angle between incoming and outgoing light beams. A light beam bends closer to the normal in the material with...
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