Homework 8 handout - HW8 Due Thursday April 17 If words are required in an answer then the answer should be expressed in a complete sentence If a number

Homework 8 handout - HW8 Due Thursday April 17 If words are...

This preview shows page 1 - 2 out of 3 pages.

HW8: Due Thursday April 17 If words are required in an answer, then the answer should be expressed in a complete sentence. If a number is required in an answer, then the number should have the correct number of significant figures, and should include units. If you are asked a multiple choice question, you are required to indicate all correct answers (and there may be more than one). Remember to show all work, and be legible and clear. Your homework should be returned on a separate piece of paper. 1. How would you classify the following galaxies displayed in the hallways of Van Vleck Observatory, using the system illustrated in Figure 20.8? Justify your answers with a sentence or two. a) The galaxy displayed by the bulletin board of Prof. Moran’s office (105). b) The average galaxy in the cluster of galaxies displayed just to the left of the department office across from the VVO library. c–d) Both galaxies in the interacting pair displayed in the first picture across from the bulletin board of Prof. Hughes’ office (109). e–f) In the image just to the left of the interacting pair of galaxies, many galaxies are visible, with a handful of large galaxies sprinkled across the image. Classify the large galaxy in the top left and the large galaxy in the bottom left. 2. The disk of the Galaxy is about 100,000 light-years in diameter and 1,000 light-years thick. a) Find the volume of the disk in cubic light-years. b) Find the volume (in cubic light-years) of a sphere 100 light-years in radius centered on the Sun. c) If supernovae occur randomly throughout the volume of the Galaxy, what is the probability that a given supernova will occur within 100 light-years of the Sun?
Image of page 1

Subscribe to view the full document.

Image of page 2

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes