Question

Microwaves travel at the speed of light, 3.00× 108 m/s. when the frequency of microwaves is 8.90× 109 hz, what is their wavelength? answer in units of m.

Answer 1

Answer:

0.034m

Explanation:

The wavelength is the distance between two consecutive ridges or valleys

And it is defined by the following equation:

$\lambda=\frac{V}{f}\\ V=speed\\f=frequency$

Data

$V= 3.00.10^8 m/s\\f= 8.90.10^9 hz$

Now we substitute in the equation

$\lambda=\frac{V}{f}\\\lambda=\frac{3.00.10^8m/s}{8.90.10^9hz} \\\lambda= 0.034m$

the wavelength is 0.034m

Answer 2

Wavelength = Speed/Frequency

Speed = speed of light = 3*10^8 m/s
Frequency = 8.9*10^9 Hz

Wavelength = (3*10^8)/(8.9*10^9) = 0.0337 m