20 points Which of these are properties of analog signals? (choose all that apply)

A: Analog signals are susceptible to noise.

B: Analog signals are quantized.

C: Analog signals are often combinations of many other analog signals.

D: Analog signals can take on any value.

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?