Suppose hubbles constant is 100 kmsecmpc this is not School University of California, Santa Barbara; Course Title ASTRONOMY 1; Type. What would be the age of the universe? How fast would we expect a galaxy 100 million light-years away to be moving? 1. toward us at 2,000 km/s 2. away from us at 2,000 km/s 3. away from us at 200 km/s 4. away from us at 20,000 km/s Suppose astronomers were to discover that the value of Hubble's constant were twice as large as it is now thought to be. Suppose that the Hubble constant had a value of H = 100 km/s/Mpc. You may assume a constant expansion rate. Given info: Hubble’s constant (H) = 100 km/s/Mpc. The age of the universe if Hubble’s constant had a value of 100 km/s/Mpc. While that may seem like an easy statement to make, it was an incredibly difficult task to accomplish. The slope of the plot, the ratio of velocity to distance, is known as the Hubble constant. Hubble's constant is misnamed, it is constant in space at a given time, but very much not a constant versus time.
First, an everyday example: Suppose you are told someone is driving at 100 km/hr and you want to know how long it will take them to go 130 miles to reach you. How would this affect our estimate of the age of the universe? The Hubble constant, usually denoted by the symbol H 0, measures the rate of the expansion, and it also indicates the size and age of the universe. Uploaded By LieutenantHackerCaribou2903. 10 billion years B.
3. Topics for this week What does Hubble’s law tell us about the … (a) To determine. See the answer. Suppose Hubble's constant is 100 km/sec/Mpc (this is not the currently accepted value). What if H had a value of 50 km/s/Mpc? D=Vt so t=D/V. Expert Answer . How do you figure this out. To calibrate Hubble's constant, though, you need to be able to plot the distances for a number of galaxies as obtained using other methods. the answer is a. please type the answer 2. Suppose that Hubble's constant were 20 kilometers per second per million light-years. suppose Hubbles constant is h0 =22 km/s/mly. This problem has been solved! The graph would have to show luminosity on the vertical axis, rather than velocity. Hubble's relation expresses how the recession velocity increases with distance from the observer. A good question. What would the approximate age of the universe be in this case? 14 billion years C. 20 billion years D. 41 billion years E. 61 billion years. What effect would this discovery have … Pages 12 Ratings 80% … How fast would we expect a galaxy 100 million light-years away to be moving? Explanation of Solution. $\begingroup$ Thanks-- I've been randomly thinking about the meaning of the Hubble Time and although I could readily understand that it is the reciprocal of Hubble's Constant, I didn't see why this should be synonymous with the age of the Universe. 1. toward us at 2,000 km/s 2. away from us at 2,000 km/s 3. away from us at 200 km/s 4. away from us at 20,000 km/s Suppose that Hubble's constant were 11 km/s/million light years instead of 22 km/s/million light years. How would a graph look? Hubble’s constant 1 5. How fast would we expect a galaxy 100 million light-years away to be - 15048591 AST 301 Introduction to Astronomy John Lacy RLM 16.332 471-1469 lacy@astro.as.utexas.edu Bohua Li RLM 16.212 471-8443 bohuali@astro.as.utexas.edu Myoungwon Jeon RLM 16.216 471-0445 myjeon@astro.as.utexas.edu web site: www.as.utexas.edu Go to Department of Astronomy courses, AST 301 (Lacy), course website. Hubble's Constant is no more a constant than "Moore's Law" (a conjecture about silicon chip technology development over several decades) is a physical "law." For decades, astronomers have argued over the precise value of Hubble's constant. - 14097211 But the units of speed and distance given are incompatible. Hubble's constant Background When external galaxies were first identified and their optical spectra measured, it was found that the spectral lines of the galaxies did not appear at their expected places; instead, they were redshifted - that is, they appeared at longer wavelength than the expected wavelength of the line. The Hubble constant is a proportionality constant between the velocity of recession of far away galaxies ( distance > 10 Mparsec away from earth = 3.3E7 light years) and their distance. Suppose Hubbles constant is 100 kmsecMpc this is not the currently accepted. The data would follow a much steeper, almost vertical line. Suppose that Hubble's constant were 20 kilometers per second per million light-years. (Assume the motion is due only to Hubble's law.)
(Assume the motion is due only to Hubble's law.) Previous question Next question Get more help from Chegg. A. Suppose that Hubble's constant were 20 kilometers per second per million light-years. 1. Question: Suppose Hubbles Constant Is H0 =22 Km/s/mly. 24. Example: Units of the Hubble Constant. The data would follow a more shallow line, closer to horizontal than the current line. Test Prep. Suppose it was discovered that Hubble's constant, H0, was smaller than previously thought.
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