Clarissa is standing at the bottom of a canyon wall that 4300 feet away how long will it take for sound to come back her as an echo?

To calculate the time it takes for sound to come back to Clarissa as an echo, we can use the formula:

Time = 2 * Distance/Speed of Sound

In this case, the distance to the canyon wall and back is 2 * 4300 feet = 8600 feet. The speed of sound at room temperature is approximately 1125 feet per second.

So, the time taken for sound to travel to the canyon wall and back as an echo is:

Time = 2 * 8600 feet / 1125 feet/sec

= 15.34 seconds

Therefore, it will take approximately 15.34 seconds for the sound to come back to Clarissa as an echo.