Answered

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Standing 38.6 m away from a rock wall, you yell. How much time in seconds will it take you to hear your echo to two significant digits? Make sure to account for the travel from you to the wall and from the wall back to you.

Sagot :

temdan2001

It will take you 0.23 seconds to hear your echo

What is Echo ?

Echo can be simply defined as the reflection of sound wave.

Given that you are 38.6 m away from a rock wall, you yell. To know how much time in seconds it will take you to hear your echo to two significant digits, You must make sure to account for the travel from you to the wall and from the wall back to you.

  • The speed of sound V = 340 m/s
  • The distance D to and fro = 2 x 38.6 = 77.2 m
  • The time taken T = ?

Speed V is the distance per time

V = D / T

Substitute all the parameters into the formula

340 = 77.2 / T

Make T the subject of formula

T = 77.2 / 340

T = 0.2270

T = 0.23 s to two significant digits

Therefore, it will take you 0.23 seconds to hear your echo.

Learn more about Echo here: https://brainly.com/question/14090821

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