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Q. When viewed by a person who has lower and upper limits for their visible spectrum of 430 and 680nm, respectively, the diffraction grating (even as illuminated by white light) gives a first order band that behind at an angle of 12.30 degrees. What is the width of the entire angle (degrees) for the first order spectrum? And the second order spectrum?

Q. A student wearing frictionless in-line skades on a horizontal surface is pushed by a friend with a constant force of 23.00N. How far should the student be pushed, starting from rest, so that her final kinetic energy is 283J?

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