Ask Question
26 August, 15:12

Three guys are standing in a row, facing a solid, high wall. Guy A is 10 m from the wall, B is 20 m away from the wall, and C is 30 m away from it. Guy B shouts. Will any other guy be able to hear an echo of Guy B's shout?

+3
Answers (1)
  1. 26 August, 18:20
    0
    Only guy B and C will be able to hear the echo but guy A will not be able to hear the echo

    Explanation:

    Given that:

    Guy A = 10 m away from the wall

    Guy B = 20 m away from the wall

    Guy C = 30 m away from the wall

    At standard Temperature of 20 °C, velocity of sound in dry air ≅ 343 m/s. As such, if there is a reflecting object that produces an echo, it mustn't be more than 17.2 m from where the sound is originating from. As the sound is coming from guy B who is 20 m away, only Guy B and C who are above 17.2 m will only perceive the echo.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Three guys are standing in a row, facing a solid, high wall. Guy A is 10 m from the wall, B is 20 m away from the wall, and C is 30 m away ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers