Question

how long would it take a radio wave of wavelength 3 x 10^12 angstroms to travel from Mars to Earth distance of 8 x 10^9 kilometre​

Answer 1

Answer:

4.44minutes

Explanation:

Radio waves travel at the speed of light. So in this case distance = speed × time

Time =

3×10

8

ms

1

8×10

7

Km

= 266.66 sec

Time =

60

266.66

= 4.44 minutes

Answer 2

We are given a Radio Wave, which has to travel from Mars to Earth.

A Radio Wave is an Electromagnetic Wave, and all Electromagnetic Waves travel with the same speed in vacuum, regardless of the frequency.

So, the frequency is unessential. We know that the speed of electromagnetic waves in vacuum is:

Also, the distance between Mars and Earth is given:

So, we can find the time taken for travel:

Thus, The Radio Wave will take approximately 4.44 minutes to travel from Mars to Earth

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Answer:

Explanation:

the frequency is unessential. We know that the speed of electromagnetic waves in vacuum is:

c = 3\times 10^8 \, \, m/s

Also, the distance between Mars and Earth is given:

d = 8 \times 10^7 \, \, km = 8\times 10^{10} \, \, m

So, we can find the time taken for travel:26.67