Monochromatic light illuminates two, narrow parallel slits. The centres of the two slits are 0.800 mm apart. An interference pattern forms on a screen 50.0 cm away. The fringe separation on the screen is 0.304 mm. Find the wavelength λ of the light.

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.