2. Light from a helium-neon (I=633nm) illuminates two 0.40 apart. A viewing screen is 2.0 behind the slits. What are the distances between the two m = 3 bright fringes and between the two m = 3 dark fringes?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute

Most short-period comets do not have randomly oriented orbits because

Which bonds are found inside a water molecule