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Q. A child slides down a slide with a 31 incline, and at the bottom her speed is precisely one third what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.

Q. Light with a wavelength of 633 nm illuminates a single slit and a diffraction pattern of light is viewed on a screen that is 1.50 m behind the hole. The distance between the m = 1 and m = 2 minima in the pattern is 4.75 mm. Find the slit width.

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