A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?
a
330.0m
b
335.4m
c
660.0m
d
670.8m
Explanation
Correct Option
bVideo Explanation
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Discussions (7)
brigelina
7 years ago
Myschool the question says how far (i.e distance) not velocity,
V=f *lambda
V=1.29 * 260 = 335.4
Distance = speed * time
D= 335.4 * 2 = 670.8m
The answer is D myschool
josephgnachy
6 years ago
The answer is wrong ,is just the speed(v) that was found so the distance as asked how far? Is speed (v) multiplies time
D=s *t
D=335.4 *2
D=670.8,so the correct answer is (d)
