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A student sets a 0.4 kg meter stick to pivot at the 0.8 m mark. At what position should the student suspend a 0.2 kg mass to keep the system in static equilibrium?
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An oil film (n = 1.48) floating on water (n = 1.33) is illuminated by white light at normal incidence. The film is 274 nm thick. The reflected light will be predominately a single color. Find the wavelength of the domina ...
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