Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 4, Problem 7QAP
To determine
The spectrum at which hot light emits light.
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Chapter 4 Solutions
Understanding Our Universe
Ch. 4.1 - Prob. 4.1CYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAP
Ch. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAPCh. 4 - Prob. 11QAPCh. 4 - Prob. 12QAPCh. 4 - Prob. 13QAPCh. 4 - Prob. 14QAPCh. 4 - Prob. 15QAPCh. 4 - Prob. 16QAPCh. 4 - Prob. 17QAPCh. 4 - Prob. 18QAPCh. 4 - Prob. 19QAPCh. 4 - Prob. 20QAPCh. 4 - Prob. 21QAPCh. 4 - Prob. 22QAPCh. 4 - Prob. 23QAPCh. 4 - Prob. 24QAPCh. 4 - Prob. 25QAPCh. 4 - Prob. 26QAPCh. 4 - Prob. 27QAPCh. 4 - Prob. 28QAPCh. 4 - Prob. 29QAPCh. 4 - Prob. 30QAPCh. 4 - Prob. 31QAPCh. 4 - Prob. 32QAPCh. 4 - Prob. 33QAPCh. 4 - Prob. 34QAPCh. 4 - Prob. 35QAPCh. 4 - Prob. 36QAPCh. 4 - Prob. 37QAPCh. 4 - Prob. 38QAPCh. 4 - Prob. 39QAPCh. 4 - Prob. 40QAPCh. 4 - Prob. 41QAPCh. 4 - Prob. 42QAPCh. 4 - Prob. 43QAPCh. 4 - Prob. 44QAPCh. 4 - Prob. 45QAP
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- What is the temperature of a star whose maximum light is emitted at a wavelength of 290 nm?arrow_forwardA star with a mass like the Sun which will soon die is observed to be surrounded by a large amount of dust and gas -- all material it has expelled in the late stages of its life. If astronomers want to observe the radiation from such a giant star surrounded by its own debris, which of the following bands of the spectrum would be the best to use to observe it? gamma-rays x-rays ultraviolet infrared very long wavelength radio wavesarrow_forward. How big would a square solar sail need to be in order for sunlight to exert a 12 N force on it (use 1,100 W/m² as the intensity of the sunlight).arrow_forward
- What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a celestial object at 7 K above absolute zero? wavelength of maximum intensity? 414285.71 Total Energy? -----arrow_forward3) How bright will Pluto appear in reflected or scattered sun-light (total Flux received in W/m²) at the Earth when Pluto is at Opposition and a distance from the Sun of 40.0 A.U.? Assume that Pluto has an albedo of 0.60 and a radius of 1.2 x 10³ km.arrow_forwardKrypton (36), Mercury (Hg 80), Hydrogen (H 1), Silicon (Si 14), and Gold (AU 79) The Three primary colors of light are: ____ ____ ___ _____ ____ ___ 6. (7) How are spectral patterns used to identify specific light sources? ___________________ ______________ 7. Using the diffraction grating from the kit observe various light sources and view it with the diffraction grating. Identify the colors you see and identify if any one color is dominant. (Check flashlights, lamps, household lights, refrigerator lights are usually incandescent, car lights, etc… to find the needed light source.) Incandescent light bulb: __ Fluorescent light bulb: ___ Yellow street lamp: ____arrow_forward
- What is the wavelength of maximum intensity and the total energy emitted by a celestial object at 2.7 K above absolute zero? Which part of the EM spectrum does the wavelength of maximum intensity lie?arrow_forwardHow much the stars in the sky?arrow_forwardSay you observe a light source which you know emits light with a wavelength of 650nm, but when you study the light coming from the distant object, you measure the light to have a wavelength of 652nm. What can you say about the object?arrow_forward
- 16 Which of the following methods has led to the most discoveries of massive planets orbiting near their parent stars? (A) Detecting the shift of the star's position against the sky due to the planet's gravitational pull B Detecting the starlight reflected off the planet C Detecting a planet ejected from a binary star system D Detecting the infrared light emitted by the planet E Detecting the gravitational effect of an orbiting planet by looking for the Doppler shifts in the star's spectrumarrow_forwardCompared to wavelengths of visible light, the wavelengths of Ultraviolet light are (A) shorter (B) longer (C) the same (D) Nonsense! We can’t compare wavelengths because we can’t see themarrow_forward3. Consider two stars. Star A has a surface temperature of 12000 K. Star B has a surface temperature of 6000 K. The diameter of star A is twice of the diameter of star B. The two stars have the same apparent magnitude. Answer the following questions about star A and star B. There is no need to explain (a) Which star is more luminous (i.e. emitting more radiation power)? (b) Which star is brighter in the sky? (c) Which star is at a larger distance (measuring from Earth)?arrow_forward
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