Interactive 1. A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating
at 1.2 m/s2. How many seconds after the light turns green does he reach his cruising
speed of 6.0 m/s?

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?