My tooth is aching. Change the noubs on the following sentence in plural and rewrite...

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

When a metal and an bond they do not share electrons