The information given is that a wave is sent though a wire with the frequency of 200 hz, and tarvles 500 m/s. A lighter witre is attached and the wave slows down to 400 m/s. Is it a higher or lighter medium? I want to say lighter as the wavelength is decreeased, meaning it has a figher frequency, meaning a lighter medium. However, I am unsure if my thinking is correct.