(II) Any type of wave that reaches a boundary beyond which its speed is increased, there is a maximum incident angle if there is to be a transmitted refracted wave. This maximum incident angle θ iM corresponds to an angle of refraction equal to 90°. If θ i > θ iM , all the wave is reflected at the boundary and none is refracted, because this would correspond to sin θ r > 1 (where θ r is the angle of refraction), which is impossible. This phenomenon is referred to as total internal reflection. ( a ) Find a formula for θ iM using the law of refraction. Eq. 15–19. ( b ) How far from the bank should a trout fisherman stand (Fig. 15–38) so trout won’t be frightened by his voice (1.8 m above the ground)? The speed of sound is about 343 m/s in air and 1440 m/s in water.
(II) Any type of wave that reaches a boundary beyond which its speed is increased, there is a maximum incident angle if there is to be a transmitted refracted wave. This maximum incident angle θ iM corresponds to an angle of refraction equal to 90°. If θ i > θ iM , all the wave is reflected at the boundary and none is refracted, because this would correspond to sin θ r > 1 (where θ r is the angle of refraction), which is impossible. This phenomenon is referred to as total internal reflection. ( a ) Find a formula for θ iM using the law of refraction. Eq. 15–19. ( b ) How far from the bank should a trout fisherman stand (Fig. 15–38) so trout won’t be frightened by his voice (1.8 m above the ground)? The speed of sound is about 343 m/s in air and 1440 m/s in water.
(II) Any type of wave that reaches a boundary beyond which its speed is increased, there is a maximum incident angle if there is to be a transmitted refracted wave. This maximum incident angle θiM corresponds to an angle of refraction equal to 90°. If θi> θiM, all the wave is reflected at the boundary and none is refracted, because this would correspond to sin θr> 1 (where θr is the angle of refraction), which is impossible. This phenomenon is referred to as total internal reflection. (a) Find a formula for θiM using the law of refraction. Eq. 15–19. (b) How far from the bank should a trout fisherman stand (Fig. 15–38) so trout won’t be frightened by his voice (1.8 m above the ground)? The speed of sound is about 343 m/s in air and 1440 m/s in water.
A wave of wavelength 0.60cm is produced in air and it travels at a speed of 300m/s. Will it be audible?
Determine the frequency of a sound wave in air at 20 degrees C with a wave length of 1cm.
I think that f = # of waves divided by t
but I'm not sure how to set that up with what's given
A loudspeaker emits a sound wave at a particular frequency. If the intensityof the wave is doubled, how does the speed of the wave change? What if the frequency is doubled?
Chapter 15 Solutions
Physics for Scientists and Engineers, 4th Ed + Masteringphysics: Chapters 20-35
University Physics with Modern Physics (14th Edition)
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