High pressure<span> is associated with sinking air, and </span>low pressure<span> is associated with </span>rising air t<span>he opposite occurs with </span>high pressure<span>. Air is moving away from the </span>high pressure<span> center at the surface so as a result, air from above must </span>sink <span>to take its place.</span>
Here is the main thing is medium. In the free boundary wave face the air medium, but in a fixed boundary wave face different medium. The change of medium effect on the change of the reflection of wave.
Answer:
I would think a vector but double check that before turning it in
Explanation:
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