Solution_Set_02

# Solution_Set_02 - SOLUTION SET 2 Physics 2022 c = f f = c /...

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SOLUTION SET 2 Physics 2022 1. c = f λ f = c / λ = (3 x 10 8 m/s) / (0.4 m) = 7.5 x 10 8 Hz Radio 2. c = f λ λ = c / f = (3 x 10 8 m/s) / (3 x 10 16 /s) = 1 x 10 -8 m = 10 nm X-ray 3. F s 1 / d s 2 F e 1 / d e 2 F s / F e = d e 2 / d s 2 = (1 / 10) 2 = 0.01 times as strong 4. F sc 1 / d sc 2 F e 1 / d e 2 F sc / F e = d e 2 / d s 2 = 20 d e / d sc = 4.5 d sc = 0.22 d e = 0.22 AU 5. T F = 98.6 o T K = 5/9 (98.6 – 32.0) + 273 = 5/9 (66.6) + 273 = 36.7 + 273 = 309.7 K λ max = 0.0029 / T K = 0.0029 / 309.7 = 9.36 x 10 -6 m = 9.36 μ m IR 6. T = 5800 K T F = 9/5 (5800 – 273) + 32 = 9/5 (66.6) + 32 = 9949 + 32 = 9981 o F 10,000 o F 7. T altair = 21,600 K T sun = 5800 K F altair / F sun = (21,600 / 5800) 4 = (3.72) 4 = 192 X

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8a. T 1 = 320 o C = 320 + 273 = 593 K λ max = 0.0029 / T 1 = 0.0029 / 593 = 4.89 x 10 -6 m = 4,890 nm (IR) 8b. T 2 = -150 o C = -150 + 273 = 123 K E 2 / E 1 = (T 2 ) 4 / (T 1 ) 4 = (T 2 / T 1 ) 4 = (593 / 123) 4 = (4.82) 4 = 540 9. L sirius / L sun
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## This note was uploaded on 04/07/2011 for the course PHYS 2022 taught by Professor Sowell during the Spring '11 term at Georgia Institute of Technology.

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Solution_Set_02 - SOLUTION SET 2 Physics 2022 c = f f = c /...

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