Concept Question 7-1: What is a uniform plane ave? Describe its properties, both physically and athematically. Under what conditions is it appropriate treat a spherical wave as a plane wave?

QUESTION 30 Which of the following properties of the cochlea is related to so-called "labeled line" coding that allows to distinguish sound frequencies above 20kHz?   A. The changing width and stiffness of the tectorial membrane   B. The changing width and stiffness of the basilar membrane   C. The speed at which sound waves propagate along the length of the cochlea   D. The changing mechanical properties of the cochlear wall along the length of the cochlea   E. The increasing density of the cochlear fluid along the length of the cochlea   F. None of the above, as this is a property of the auditory nerve fiber cells that receive input from hair cells in the cochlea

QUESTION 13 Which of the following wavenumber corresponds to the carbon/carbon triple bond region on an IR spectrum? 1500 - 4000 cm 400 4000 cm 400 1500 cm-1 2100 - 2300 cm 1600 1850 cm

Question 10