Question: Can you please help me with the problems below? :( Stephen is given a large crystal and needs to verify whether it is a diamond

Can you please help me with the problems below? :(

Stephen is given a large crystal and needs to verify whether it is a diamond or cubic zirconia. He shines a beam of light at a 42.1 " angle upon the face of the crystal and measures the refraction angle. What is the refraction angle if the crystal is a diamond? refraction angle for diamond = What is the refraction angle if the crystal is a cubic zirconia? refraction angle for cubic zirconia = Calculate the total effective resistance of a circuit consisting of three resistors arranged in series with values 5.0 .9, 11.0 52, 0 0.0313 n O 0.35 :2 Calculate the total effective resistance of a circuit consisting of three resistors arranged in parallel with values 2.0 9, 13.0 n, and 18.0 o. O 33.0 o O 1.6 n 0 0.0303 n O0$o

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