Sorry about that...

and this is a high school question...

**1.** First of all, find the speed of sound, I used the formula:

v=331m/s + 0.59 m/s/degree celcius (temp)

so I plug in the values: v = 331m/s+ 0.59m/s/degree celcius (15 degress celcius)

= 339.85 m/s in air

To find the

**period** I use this equation: T = 1 divided by f (frequency)

= 1 divided by 600Hz

= 0.0016s

To find the

**wavelength** I use this equation: Wavelength (lamda) = v divided by f

= 339.85 divided by 600Hz

= 0.57m

**2. **Given Information: Frequency=600Hz

distace of wall = 800m

echo is heard after = 4.92 seconds (s)

Find: Period, speed, wavelength and the air temperature

Find

**Avergae Velocity**: V = d over t

= 800m ivided by 4.92 seconds

= 162.6 m/s

ok, The only thing I can for this question is to find the

**air temperature**:

Temp = v minus 331m/s divided by 0.59

= (162.6 m/s - 331) divided by 0.59

= - 285.4 dgrees celcius

I have no idea how to solve (for the first question) the distance that the sound travels to the wall, and back... Also I am not sure of my answers are correct... please help. And for question number 2, I don't know how to solve for speed, wavelength and period.

Much Appreciated