Abat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. if bats emit a chirp at a frequency of 7.84 104 hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect?
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Ответ:
0.4375 cm
Explanation:
f = frequency of the chirp emitted by the bats = 7.84 x 10⁴ Hz
v = speed of sound in air = 343 m/s
λ = smallest wavelength = size of the smallest insect a bat can detect
Using the equation
v = f λ
inserting the values
343 = (7.84 x 10⁴) λ
λ =![\frac{343}{7.84\times 10^{4}}](/tpl/images/0047/4501/5c895.png)
λ = 43.75 x 10⁻⁴ m
λ = 0.4375 cm
Ответ:
no velocity specification or graphical help, just check ur question dear.