1. The problem statement, all variables and given/known data A 2.40 kHz sound wave is transmitted through an aluminum rod. A) What is its wavelength in the aluminum? B What is the sound wave's frequency when it passes into the air? C) What is its wavelength in air? The speed of sound in aluminum is 5100 m/s according to the book. 2. Relevant equations Velocity=frequency*lambda 3. The attempt at a solution So...This is what I was doing, which apparently is wrong. Velocity=frequency*lambda frequency=2.4 * 10^3 Hz Velocity = 5100 meters/sec 5100m/s=(2.4 * 10^3)hz *lambda lambda=2.125m But apparently that isn't the answer for part A...So I must have done something wrong somewhere... So...thank you in advance for any help.