Light passes through a pair of very thin parallel slits. the resulting interference pattern is viewed far from the slits at various angles theta relative to the centerline coming outward from the midpoint between the slits. the central bright fringe is at theta = 0 degree. if the central bright fringe has intensity i0, what is the intensity of the next bright fringe on either side of it

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.