Question

plzz answer....this question............

Answer 1

нey gυyѕ,

Given: frequency= 1.5kHz

1.5 × 10^3Hz

wavelength=2.5cm

=0.25m

Distance= 1.5km

1.5×10^3cm

we known that,

velocity of sounds = frequency × wavelength

V= 1.5×10^3×0.25

V= 0.375m/s

V= 375m/s

so we get the velocity

now we can easily find the time.
$time \: = \frac{distance}{velocity}$

t = 1.5×10^3/375

t= 1500/375

t= 4s

therefore, the sound wave takes 4s to travel the distance of 1.5 km

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