contestada

A wave emitted from a source has a frequency of 10 Hz and wavelength 2.5 m. How much time will it take to reach a person located 5 m from the source?

Respuesta :

Answer:

time taken by the wave to reach the person is 0.2 s

Explanation:

As we know that the speed of the wave is given as

[tex]v = \lambda f[/tex]

here we know that the wavelength of the wave is

[tex]\lambda = 2.5 m[/tex]

[tex]f = 10 Hz[/tex]

now speed of the wave is given as

[tex]v = 10(2.5)[/tex]

[tex]v = 25 m/s[/tex]

Now time taken by the wave to reach 5 m distance is

[tex]t = \frac{L}{v}[/tex]

[tex]t = \frac{5}{25}[/tex]

[tex]t = 0.2 s[/tex]