Question

What is the time required for sound to travel 1.75 km if the temp of the air is 20 C°?

Answer 1

Answer:

Explanation:

The 2 equations we need for this are

$v=331.5+.606T$ and

d = rt. First we need to find the velocity using the first equation, then we will plug it into the distance equation as the rate to find the time.

v = 331.5 + .606(20.0) I used 3 sig figs for the temp instead of the 1 found in 20.

v = 331.5 + 12.1 so

v = 343.6 m/s

Now, before we can find the time in seconds, we need to convert the distance to meters.

1.75 km = 1750 m:

1750 = 343.6t so

t = 5.09 seconds