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mckenna426
07.04.2020 •
Physics
Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.94 cm radius of curvature. 0.00097 Incorrect: Your answer is incorrect. How are the radius of curvature and focal length of a spherical mirror related
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Ответ:
915 Hz
Explanation:
The observed frequency from a sound source is given as
f₀ = f [(v + v₀)/(v+vₛ)]
where
f₀ = observed frequency of the sound by the observer = ?
f = actual frequency of the sound wave = 983 Hz
v = actual velocity of the sound waves = 343 m/s
vₛ = velocity of the source of the sound waves = 55.9 m/s
v₀ = velocity of the observer = 28.4 m/s
f₀ = 983 [(343+28.4)/(343+55.9)]
f₀ = 915.2 Hz = 915 Hz