Concept explainers
Imagine you are comparing the ability of electric hot plates of different sizes and temperatures to fully cook two identical large pots of spaghetti. Note that all the pots are as large as the largest hot plate. The shading of each hot plate is used to illustrate its temperature. The darker the shade of gray the cooler the temperature of the hot plate.
If you use two hot plates of different sizes, can you assume that the hot plate that can cook a large pot of spaghetti first is at a higher temperature? Which lettered example above supports your answer?
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Chapter 3 Solutions
Lecture- Tutorials for Introductory Astronomy
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Introduction to Electrodynamics
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Conceptual Physical Science (6th Edition)
Essential University Physics: Volume 1 (3rd Edition)
Tutorials in Introductory Physics
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- Define the term continuous spectrum?arrow_forwardWhen astronomers look at the spectrum of the Sun, they noticed that the light from one edge is slightly blue-shifted, while light from the opposite age is slightly red-shifted. What does this tell you about the Sun?arrow_forwardIf you see a red-hot star, you can be certain that its peak intensity is in the infrared region. Why is this?arrow_forward
- The three most prominent spectral lines of hydrogen are H-α at 656 nm, H-β at 486 nm, and H-γ 434 nm. If we observe an object with H-α at a wavelength of 700 nm, what wavelength will we observe H-β and H-γ? Is the object moving toward or away from us, and how do you know? Suppose we observe another object with H-α at 585 nm. Is this object moving toward or away from us? Is it moving slower or faster than the first object?arrow_forwardThe visible spectrum of sunlight shows a range of colors from red to violet. This spectrum has numerous dark lines spread throughout it. Noting that the surface of the Sun is much cooler than the interior, so that the surface is comparable to a cool gas through which light passes, which a. The cooler, denser surface material scatters certain wavelengths of light, forming dark lines. b. The atoms at the surface absorb certain wavelengths of light, causing the dark lines at those wavelengths. c. The atoms in the Sun’s interior emit light of specific wavelength, so that parts of the spectrum are dark. d. The atoms at the surface are excited by the high interior temperatures, so that the dark lines are merely wavelengths at which those atoms don’t emit energy.arrow_forwardLook at the image on the opening page of this chapter. Some white stars are shown to be very large circles with spikes. Why are these stars apparently very large? What causes the spikes?arrow_forward
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