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Q1. The sodium D line is a doublet consisting of two wavelengths, 588.995 and 589.592 nm. Calculate the angular separation between these two lines in the first-order spectrum for a grating with 4000 lines per centimeter. Repeat for the second order.Q2. When red light of wavelength 620 nm falls on a single slit, it creates a central diffraction maximum that is 8.80 mm wide on a screen 2.00 m away. How wide is the slit? How wide will the central peak be if the red light is replaced with a blue light of wavelength 500 nm?
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An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
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A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
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