The intensity at the center of a single – slit diffraction pattern is 0. What is the intensity at a point in the pattern where there is a 68.0 radian phase difference between wavelets from the two edges of the slit? (b) If this point is 9. 00° away from the central maximum, how many wavelengths is the slit wide?

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the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."