wavelength

I'm currently studying wavelength and frequency and I'm writing a lab about the Effect of Temperature Change on the Tune of a pipe. I've learned about the equation v= f*Lambda. What will happen if temperature is changed? I know that speed of the sound will increase. Does it mean that wavelength...

Why does a higher wavelength penetrate a tissue below the skin better? Why wouldn't it be a lower wavelength => higher energy that penetrates a tissue better? Thanks!