Two narrow slits are illuminated by a laser with a wavelength of 593 nm. The interference pattern on a screen located x = 5.00 m away shows that the fourth-order bright fringe is located y = 5.70 cm away from the central bright fringe.
a) Calculate the distance between the two slits.
b) The screen is now moved 2.1 m further away. What is the new distance between the central and the fourth-order bright fringe?