Do I need to convert wavelength to meters

[KatieLynn]

Homework Statement

The sound emitted by bats has a wavelength of 3.5mm. What is the sound's frequency in air? Assume that the bat is flying through air with a temperature of 30 degrees C.

Homework Equations

V=331.4 + 0.6*Temp.C
V=wavelength*frequency

The Attempt at a Solution

V= 331.4 + 0.6(30)
V=349.4m/s

V=wavelength*frequency

349.7m/s=0.0035*f
f=99829.6hz

The only thing I'm not sure about is did I need to change the 3.5mm to .0035m?

 

[rock.freak667]

Yes you do.

 

[KatieLynn]

thank you :)