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To measure the specific heat in the liquid phase of a

University Physics with Modern Physics (1) | 14th Edition | ISBN: 9780321973610 | Authors: Hugh D. Young Roger A. Freedman ISBN: 9780321973610 228

Solution for problem 17.119 Chapter 17

University Physics with Modern Physics (1) | 14th Edition

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University Physics with Modern Physics (1) | 14th Edition | ISBN: 9780321973610 | Authors: Hugh D. Young Roger A. Freedman

University Physics with Modern Physics (1) | 14th Edition

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Problem 17.119

To measure the specific heat in the liquid phase of a newly developed cryoprotectant, you place a sample of the new cryoprotectant in contact with a cold plate until the solutions temperature drops from room temperature to its freezing point. Then you measure the heat transferred to the cold plate. If the system isnt sufficiently isolated from its room-temperature surroundings, what will be the effect on the measurement of the specific heat? (a) The measured specific heat will be greater than the actual specific heat; (b) the measured specific heat will be less than the actual specific heat; (c) there will be no effect because the thermal conductivity of the cryoprotectant is so low; (d) there will be no effect on the specific heat, but the temperature of the freezing point will change.

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Astro 102 - Notes Luminosity – intrinsic brightness – how much energy per unit time that object is omitting Flux – Apparent brightness – how much light we actually receive, how bright it appears to us Ex: 1. A Cepheid variable star with the same period as an RR Lyrae variable star cannot be equally bright (luminosity)2 2. In the equation b = L/4πd , b stands for brightness (apparent brightness, because it in dependent on luminosity and distance, so must be apparent brightness) 3. Most of the bright stars in the night sky are giants and supergiants (kind of unclear, it’s the bright stars of the night sky, also true for the most luminous) 4. The dust in the Milky Way makes stars less bright (apparent brightness, doesn’t affect the luminosity, just effects how much light we receive, how bright we perceive them) Is something faint because its far away of faint because there’s lots of dust between us and the light Its often hard to tell, it could be both How have distance measurements reshaped our view of galaxies & the universe In 1920, Shapley maps the 3D locations of globular clusters and realizes the Milky Way is larger than previously thought. He mapped the distances, which had not been done before. He realized we are not at the center, as was always previously presumed It wasn’t until 50-60 with the development of infrared light technology that we fully understood how much dust was impairing our ability to clearly see the light of the universe Think/Pair/Share 2: They key difference… When we use star counts, we

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Chapter 17, Problem 17.119 is Solved
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Textbook: University Physics with Modern Physics (1)
Edition: 14
Author: Hugh D. Young Roger A. Freedman
ISBN: 9780321973610

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To measure the specific heat in the liquid phase of a