What mountains along iran's northern border with the caspian sea

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?

Select all the correct answers. which three statements about electromagnetic radiation are true?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same