Composite materials are made mainly to improve temperature resistance.
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Looking at the image attached, When the distance from a to b was increased, the pitch of the sound would be lower.
<h3>What is the pitch of a sound?</h3>The pitch of a sound is known to be how high or low the sound that is played is.
A high sound is known as a sound that has a high pitch and a low sound is known to be the one that has a low pitch. In the above picture, the pitch will be lowered when the distance is increased.
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