Salma takes 15 minutes from her house to reach her school on a bicycle. if the bicycle has a speed of 2 m/s, calculate the distance between her house and the school.

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?

Which of the following is the best name for mgcl2

Is a volume of space that is empty of matter.