Chapter SH, Problem 11.5APP

To determine

To calculate: Speed of radio waves in ice.

Answer to Problem 11.5APP

Speed of the wave is $\underset{\_}{2.3\times {10}^5\text{ km/s}}$ .

Explanation of Solution

Given:

Frequency = $\text{125,000 Hz}$

Wavelength = $1.84\text{ km}$

Formula used:

Speed is given by,

  $v=f\lambda$

where f is frequency and $\lambda$ is wavelength.

Calculation:

Speed is calculated as:

  $\begin{array}{l}v=f\lambda \\ v=\left(\text{125000 Hz}\right)\left(\text{1}\text{.84 km}\right)\\ v=230,000\text{ km/s}\\ v=2.3\times {10}^5\text{ km/s}\end{array}$

Conclusion:

Speed of the wave is $\underset{\_}{2.3\times {10}^5\text{ km/s}}$ .