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I have three attempts for each question and I need the answers in an hour

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I have three attempts for each question and I need the answers in an hour. You can give me answers to check before moving on to next question. The questions are attached below. I only need answers for my questions

n=1 R thin film n = 1.30 nel. 33 Consider a thin film made out of material with index n = 1.3. The film has its top surface exposed to air, and the bottom surface is in contact with water as shown (n=1.33 for water). a) What is the thinnest film thickness that will reflect 11 = 686.00 nm light? nm b) What is the thinnest film thickness that will NOT reflect 12 = 392 nm light? nm c) What is the thinnest film thickness that will accomplish both objectives, i.e. will reflect 686.00 nm light and not reflect 392 nm light? nm R wa R? & mm R3 Inn Ry & RS Consider the circuit shown above. The circuit elements have values of: E = 23.0 V Ri = 47.0 Ohms R? = 57.0 Ohms R3 = 20.0 Ohms R4 105.0 Ohms R5 = 262.0 Ohms = a) What is the equivalent resistance of the circuit? Ohms b) How much power is dissipated by resistor Ri? Watts c) What is the current through resistor Rz? Amp d) What is the voltage across resistor R4? Volts