If the light strikes the plastic (from the water) at an angle θw, at what angle θa does it emerge from the plastic (into the air)? express your answer in terms of nw, np, na, and θw. remember that the inverse sine of a number x should be entered as asin(x) in the answer box.
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If the light strikes the plastic (from the water) at an angle θw, at what angle θa does it emerge fr...
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