Explain why the friends heard the sound at different intervals and what caused the echo.

Item 1: a) They heard the sound at different intervals due to the phenomenon of an echo. Step 1: Sound travels directly from the brass band to the friends. This is the first sound heard. Step 2: Sound also travels from the band, reflects off the tall building, and then travels to the friends. This reflected sound arrives later and is perceived as an echo. Step 3: The time difference between the direct sound (4 s) and the echo (5 s) is 1 s. This delay is caused by the extra distance the sound travels to the building and back. b) The sound they heard was unclear,

Explain why the friends heard the sound at different intervals and what caused the echo.

Item 1: a) They heard the sound at different intervals due to the phenomenon of an echo. Step 1: Sound travels directly from the brass band to the friends. This is the first sound heard. Step 2: Sound also travels from the band, reflects off the tall building, and then travels to the friends. This reflected sound arrives later and is perceived as an echo. Step 3: The time difference between the direct sound (4 s) and the echo (5 s) is 1 s. This delay is caused by the extra distance the sound travels to the building and back. b) The sound they heard was unclear,

Solved: Explain why the friends heard the sound at…

Part a· 3 steps

They heard the sound at different intervals due to the phenomenon of an *echo

Sound travels directly from the brass band to the friends.
This is the first sound heard.
Sound also travels from the band, reflects off the tall building, and then travels to the friends.
This reflected sound arrives later and is perceived as an echo.
The time difference between the direct sound (4 s) and the echo (5 s) is $1 \text{ s}$ .
This delay is caused by the extra distance the sound travels to the building and back.

Explain why the friends heard the sound at different intervals and what caused the echo.

Step-by-step solution

Part a· 3 steps

Sound travels directly from the brass band to the friends.

Sound also travels from the band, reflects off the tall building, and then travels to the friends.

The time difference between the direct sound (4 s) and the echo (5 s) is $1 \text{ s}$ .

Part b

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Explain why the friends heard the sound at different intervals and what caused the echo.

Step-by-step solution

Part a· 3 steps

Sound travels directly from the brass band to the friends.

Sound also travels from the band, reflects off the tall building, and then travels to the friends.

The time difference between the direct sound (4 s) and the echo (5 s) is 1 s1 \text{ s}1 s.

Part b

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The time difference between the direct sound (4 s) and the echo (5 s) is $1 \text{ s}$ .