Question

1. -/1 pointsdetailsmy notesask your teacherhow many times could light travel around the circumference of the earth in 3.4 second? let the circumference of the earth be 24,000 miles.timessubmit answer10. -/1 pointsdetailsmy notesask your teacherdetermine the speed of a radio wave that has a frequency of 1,000,000 hz.m/ssubmit answer

Explanation:

Step1: Find the speed of light

The speed of light \(c = 186000\) miles per second.

Step2: Calculate the distance light travels in \(3.4\) seconds

Using the formula \(d=v\times t\), where \(v = c\) and \(t = 3.4\) s. So \(d=186000\times3.4\) miles.

$$d = 186000\times3.4=632400$$

miles

Step3: Calculate the number of times light travels around the Earth

Let \(n\) be the number of times. Using the formula \(n=\frac{d}{C}\), where \(C = 24000\) miles (circumference of the Earth). So \(n=\frac{632400}{24000}\)

$$n=\frac{632400}{24000}=26.35$$

Radio waves are electromagnetic waves. The speed of all electromagnetic waves (including radio waves) in a vacuum is \(c = 3\times10^{8}\) m/s. This is a fundamental constant in physics.

Answer:

\(26.35\)

For the second question: