Higher amplitudes sound will have a sound while lower amplitude will have a sound. 10. The speed of sound is dependent on density and temperature of the medium being used so that higher density or temperature will yield a (higher / lower) speed (Kinetic Molecular Theory). 11. Give an example of any resonance heard: 12. Give an example of any echo heard. 13. Give an example of any evidence that sound is energy traveling in waves.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?