A michelson interferometer uses light from glowing hydrogen, Ask an Expert

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Q1. A 940 N crate is being pulled across a level floor by the force F of 375N at an angle of 25° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find out the magnitude of the acceleration of the crate.

Q2. A Michelson interferometer uses light from glowing hydrogen at 486.1 nm. As you move one mirror, 530 bright fringes pass a fixed point in the viewer. How far did the mirror move?

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