Velocity of radio waves question

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SUMMARY

The velocity of radio waves is constant at approximately 3 x 108 m/s in a vacuum, regardless of frequency or wavelength. For Radio X, with a wavelength of 2000m and a frequency of 100kHz, the calculated velocity is 2 x 108 m/s, which indicates a misunderstanding of the formula used. Radio Y, transmitting at a frequency of 1.5MHz, will also travel at the same speed of 3 x 108 m/s. The velocities of both radio waves are identical, as they propagate through the same medium.

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Hi guys I am struggling on this question and was wondering if anyone could steer me into the right direction with it

Q: Radio X transmits on wavelength 2000m at a frequency of 100kHz. Radio Y transmits at a frequency of 1.5MHz. Calculate the velocity of the radio waves.

So for radio X I used c=f*wavelength and got 2000*100000 = 2x10^8 ms-1 BUT I don't know how to calculate the velocity of radio wave Y, how do I do this?

thanks for any help you can give
 
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Do you think radio wave Y is somehow traveling at a different velocity than radio wave X?
 
SteamKing said:
Do you think radio wave Y is somehow traveling at a different velocity than radio wave X?

Is that not possible for Y to travel at a different velocity to X then? I just assumed as it was asking for the velocitieS in the question that they were different

Thank you for the reply and help :)
 

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