The frequency of the wave is 
Explanation:
The frequency, the wavelength and the speed of a wave are related by the following equation:

where
c is the speed of the wave
f is the frequency
is the wavelength
For the radio wave in this problem,


Therefore, the frequency is:

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Answer:b
Explanation:the water will not be hot nomore because of the cold water
the correct answer is 27 hours per week :) hope this helps
Answer:
average velocity include total displacement whereas average speed include total distance