College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question
Apparent and Absolute Magnitude of Stars Participation Exercise
Adapted from Lecture Tutorials for Introductory Astronomy workbook
1. What is the term that defines how bright an object actually is?
2. What is the term that defines how bright an object appears to be?
3. Comparing Saturn's apparent magnitude of -0.55 to Jupiter's apparent
magnitude of -2.2,
a. Which object appears brighter from Earth? How do you know?
b. Give an apparent magnitude value of an object that is brighter than
both Saturn and Jupiter.
4. If the Lady Gaga star has an apparent magnitude of 0.03 and is located
7.8 parsecs away from Earth, which of these values would be the most
likely absolute magnitude? State your answer and explain your
reasoning for your answer below the choices.
a. -1.12
b. 0.03
c. 0.58
You will use the chart below to answer the following questions:
Star Apparent Magnitude Absolute Magnitude
A 4 5
B 2 0
C -2 -2
D 3 2
a. Which star appears brighter from Earth: Star A or Star B? Explain your
reasoning.
b. Which star is actually brighter: Star B or Star C? Explain your reasoning.
c. Using the rules given in the Chapter 10 Nature of Stars summary on Canvas,
state whether the distance to each star is closer than 10 parsecs from
Earth, farther than 10 parsecs from Earth, or exactly 10 parsecs from Earth.
Star A:
Star B:
Star C:
Star D:
6. Would the apparent magnitude number of Star A increase, decrease, or
stay the same if it were located at a distance of 30 parsecs? What would
happen to the absolute magnitude number if the star moved to 30 parsecs
(increase, decrease, or stay the same)? Explain your reasoning.
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