Question

25 POINTS. Radar used microwaved yo check the speed of cars. If a speed of the microwaves is 2 000 000 m/ s and the wavelength is 0.0345m calculate the frequency.

Answer 1

Answer: $5.79\times 10^{7}\ \text{Hz}$

Step-by-step explanation:

Given

Speed of radar wave $v=2\times10^{6}\ m/s$

the wavelength of radar wave $\lambda =0.0345\ m$

We know, $velocity=frequency\times wavelength$

$frequency=\dfrac{\text{velocity}}{\text{wavelength}}$

$frequency=\dfrac{2\times10^6}{3.45\times10^{-2}}$

$frequency=5.797\times 10^{7}\ Hz$