Physics, 22.08.2019 17:30 hwest98

A4.4 cm -thick layer of oil is sandwiched between a 1.2 cm -thick sheet of glass and a 2.9 cm -thick sheet of polystyrene plastic. how long (in ns) does it take light incident perpendicular to the glass to pass through this 8.5 cm -thick sandwich?

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A4.4 cm -thick layer of oil is sandwiched between a 1.2 cm -thick sheet of glass and a 2.9 cm -thick...