Cosmic Perspective Fundamentals
Cosmic Perspective Fundamentals
3rd Edition
ISBN: 9780134988504
Author: Bennett, Jeffrey O., Donahue, M. (megan), SCHNEIDER, Nicholas, Voit, Mark
Publisher: Pearson,
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Chapter 12, Problem 18SEQ

Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.

Cepheids in M100. Consider these actual data for three Cepheids in the galaxy M100 (measured with observations from the Hubble Space Telescope). The luminosities were determined from the observered periods using Leavitt’s Law.

  • Cepheid 1 : luminosity = 3.9 × 10 30 watts

apparent brightness = 9.3 × 10 19 watt / m 2

  • Cepheid 2 : luminosity = 1.2 × 10 30 watts

apparent brightness = 3.8 × 10 19 watt / m 2

  • Cepheid 3 : luminosity = 2.5 × 10 30 watts

apparent brightness = 8.7 × 10 19 watt / m 2

Compute the distance to M100 with data from each of three Cepheids. Do the three distance computations agree? Based on your results, estimate the uncertainty in the distance you have found.

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Show all working explaining detailly each step.
Read each problem carefully. Solve each quadratic equation for the variable(s) specified. Be sure to show all of your work. Explain in two to three sentences what the meaning of the solution(s) are in relation to the problem situation. A rubric has been provided for reference. 1. An object is propelled off of a platform that is 75 feet high at a speed of 45 feet per second (ft./s). The height of the object off the ground is given by the formula h(t) = - 16t+45t+75, where h(t) is the object's height at time (t) seconds after the -16 object is propelled. The downward negative pull on the object is represented by Solve for t.
Please use the given template and box every the answers. Thank you.
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