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3. A mystery star has a blackbody spectrum shown in the figure below. (a) At what wavelength (in Å) does the star emits most of its light? What color does this star appear to be? Note: The visible spectrum of EM radiation ranges from 4000 Å - 7000 Å (b) The blackbody spectrum of the sun peaks at 5000 Å. Is the mystery star hotter or cooler than the sun? By how much? (Hint: use ratios) (c) Approximately how much power per unit area does this star emit compared to that of the sun? (Hint for b & c: use ratios) Brightness Star 0 2000 4000 6000 Sun 8000 10000 12 000 14000 λ (Å)

3. A mystery star has a blackbody spectrum shown in the figure below. (a) At what wavelength (in Å) does the star emits most of its light? What color does this star appear to be? Note: The visible spectrum of EM radiation ranges from 4000 Å - 7000 Å (b) The blackbody spectrum of the sun peaks at 5000 Å. Is the mystery star hotter or cooler than the sun? By how much? (Hint: use ratios) (c) Approximately how much power per unit area does this star emit compared to that of the sun? (Hint for b & c: use ratios) Brightness Star 0 2000 4000 6000 Sun 8000 10000 12 000 14000 λ (Å)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Number 3. identify the knowns, unknown(s), appropriate formula(s) then computation.
3. A mystery star has a blackbody spectrum shown in the figure below. (a) At what wavelength (in Å) does the star emits most of its light? What color does this star appear to be? Note: The visible spectrum of EM radiation ranges from 4000 Å - 7000 Å (b) The blackbody spectrum of the sun peaks at 5000 Å. Is the mystery star hotter or cooler than the sun? By how much? (Hint: use ratios) (c) Approximately how much power per unit area does this star emit compared to that of the sun? (Hint for b & c: use ratios) Brightness 0 Star 2000 4000 6000 Sun L 8000 10000 12000 14000 λ (Å)
Transcribed Image Text:3. A mystery star has a blackbody spectrum shown in the figure below. (a) At what wavelength (in Å) does the star emits most of its light? What color does this star appear to be? Note: The visible spectrum of EM radiation ranges from 4000 Å - 7000 Å (b) The blackbody spectrum of the sun peaks at 5000 Å. Is the mystery star hotter or cooler than the sun? By how much? (Hint: use ratios) (c) Approximately how much power per unit area does this star emit compared to that of the sun? (Hint for b & c: use ratios) Brightness 0 Star 2000 4000 6000 Sun L 8000 10000 12000 14000 λ (Å)
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