Autotrophs use photosynthesis
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Answer:
the main purpose of building a dam is A to create reservoirs to store water
Explanation:
In this problem we will use the formula: f = c/λ
Wherein: f = frequency
c = speed of wave
λ = wavelength of wave
500 km/h / 200 km = 2.5 Hz
<span>In this problem, speed and the distance between
crests are given. Therefore, all you have to do is to divide the speed by the wavelength
to determine the frequency using the formula provided.</span>
