Finding frequency & wavelength

[ryty]

Homework Statement

Find the frequencies and wavelengths (in air) of these notes.
A(440.0 Hz)
C(523.3 Hz)
the given frequencies are not the answers

Homework Equations

velocity=frequency*wavelength

The Attempt at a Solution

343m/s=440Hz/wavelength
wavelength=.780 m
this isn't right, and i only have 5 chances for my online hw, so i didnt want to waste this equation on the the other problem

i also have know idea how to find the frequency, if it's given, but it isn't right

 

[ideasrule]

There's either missing information, or the problem doesn't make sense. How can the given frequencies not be the answers? What medium are the frequencies given FOR, if not air? Were any temperatures mentioned?

BTW, your equation velocity=frequency*wavelength is correct. However, you then used 343 m/s=440Hz/wavelength in your solution, which is velocity=frequency/wavelength.

 

[ryty]

This is what is says,
The lowest note on a piano is A, four octaves below the A given in the table. The highest note on a piano is C, four octaves above middle C.
Chromatic Musical Scale
Note Frequency
Middle C 261.7
C#(C-SHARP) D^b(D-flat) 277.2
D 293.7
D#, E^b 311.2
E 329.7
F 349.2
F#,G^b 370.0
G 392.0
G#,A^b 415.3
A 440.0
A#,B^b 466.2
B 493.9
C 523.3

 

[Redbelly98]

It sounds like you are to use the frequency that is 4 octaves below 440 Hz, rather than 440 Hz itself.