Asked by hannah
Why is an echo weaker than the original
sound?
1. The echo has a shorter wavelength than
the original sound due to the reflection.
2. The echo has a smaller amplitude than
the original sound because sound spreads and
its intensity decreases with distance.
3. The echo has a longer wavelength than
the original sound due to the reflection.
4. The echo has a higher frequency than the
original sound due to the reflection.
sound?
1. The echo has a shorter wavelength than
the original sound due to the reflection.
2. The echo has a smaller amplitude than
the original sound because sound spreads and
its intensity decreases with distance.
3. The echo has a longer wavelength than
the original sound due to the reflection.
4. The echo has a higher frequency than the
original sound due to the reflection.
Answers
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