How Is Frequency Calculated in Wave Motion Problems?

[ShadowOfNexxus]

Homework Statement

just wondering how we got T when the equation is V=fλ i assume that this is one oscillation.

T=4.5x10-4
F=?
λ= 2.0x10⁵cm

Homework Equations

V=fλ
F=1/T

The Attempt at a Solution

F=1/4.5x10-4
F=22 hz

v= fλ
v= (22) (2.0x10⁵)
v=4400000 m/s

 

[mfb]

Please post the full problem statement. I don't understand what you are asking.