Q. Coherent light with wavelength 599 passes through two very narrow slits, and the interference pattern is observed on the screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright fringe.
Q. A 2.0 g bullet travelling at 700 m/s hits and becomes embedded in s stationary 5.0 kg wood block. What is the speed of the block immediately after the bullet has stopped moving relative to the block?