For me: WASH OUR HANDS REGULARLY
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Rate of speed (3 m/s north is three miles per second north, so it's a rate of speed)
Answer:
The wavelength of the radio wave will be 3.271 m
Explanation:
We have given frequency of the radio signal 
Speed of the light 
We have to find the wavelength of the radio signal
We know that wavelength is given by 
So the wavelength of the radio wave will be 3.271 m