Chapter 11.1, Problem 6R

To determine

To Calculate: The time taken by an electromagnetic wave to travel from the sun to earth $150,000,000\text{km}$ .

Answer to Problem 6R

The time taken by electromagnetic waves is $500\text{s}$ .

Explanation of Solution

Given:

The distance from the sun to earth is $150,000,000\text{km}$ .

Formula used:

The time taken by a wave is expressed as follows

  $t=\frac{d}{c}$  ....... (1)

Here, $t$ is the time taken, $c$ is the speed of the light and $d$ is the distance travelled by the wave.

Calculation:

Substitute $150,000,000\text{km}$ for $d$ and $3,000,000\text{km/s}$ for $c$ in equation (1)

  $\begin{array}{l}t=\frac{150,000,000\text{km}}{300,000\text{km/s}}\\ \boxed{t=500\text{s}}\end{array}$

Conclusion:

Hence, the time taken by electromagnetic waves is $500\text{s}$ .