This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Welcome back — been a while! Let's pick up where you left off. 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,