2 thing it is used for are commonly like wind turbines and water turbines.
The answer to your question is A
Answer:

Explanation:
Pressure at the bottom of the building and at the top of the building must be related as



now we will have




now we have


Answer:
mechanical waves,
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the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone.
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If the amplitude increases the volume increases and vice versa.
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The type of medium affects a sound wave as sound travels with the help of the vibration in particles.
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The higher the frequency, the shorter the wavelength.
Explanation: