The answer is Human behavior.
1. False, the water being stored behind the dam has potential energy until it begins to flow through the dam (it is then converted to kinetic energy).
2. True
3. True
Hope this helped! :)
Explanation:
Higher the frequency smaller will be the wavelength. Higher frequency have shorter wavelength and lower frequency waves have larger wavelength. Also, Beats are formed by the superposition of two waves with slightly different frequencies but with similar amplitudes. In time, waves switch between constructive interference and disruptive interference, giving the resultant wave a time-varying amplitude.