A wave has a speed of 500m/s and a frequency of 25Hz. What is the wavelength of this wave in metres?
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Answer:
Wavelength is 0.403m and it travels 500m in 20 seconds.
In this case we can use the equation:
v
=
f
λ
Where v is the velocity of the wave in meters per second, f is the frequency in hertz and
λ
is the wavelength in meters.
Hence for (a):
25=62
×
λ
λ
=
(
25
62
)
=
0.403
m
For (b)
Speed=(distance)/(time)
25
=
d
20
Multiply both sides by 20 to cancel the fraction.
d
=
500
m
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