UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
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Chapter 2, Problem 7QAP
To determine
The reason for position of stars visible at night.
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A solar eclipse is only visible over a narrow strip on the Earth's surface. This is most closely associated with:
Select one alternative:
The ways in which our view of the sky depends on latitude.
The combination of the Earth's rotation on its axis and its movement around the sun.
The elliptical nature of the moon's orbit.
The perspective dependence associated with parallax.
Solar eclipses are actually visible to everyone on the daylight side of the earth.
Which of the following is largest?
the size of a typical star.
1 AU.
the size of the earth.
1 light-minute.
What is the apparent magnitude of the Sun as seen from Venus at perihelion? What is the apparent magnitude of the sun as seen from Pluto at aphelion?
Chapter 2 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 2.1 - Prob. 2.1CYUCh. 2.2 - Prob. 2.2CYUCh. 2.3 - Prob. 2.3CYUCh. 2.4 - Prob. 2.4CYUCh. 2 - Prob. 1QAPCh. 2 - Prob. 2QAPCh. 2 - Prob. 3QAPCh. 2 - Prob. 4QAPCh. 2 - Prob. 5QAPCh. 2 - Prob. 6QAP
Ch. 2 - Prob. 7QAPCh. 2 - Prob. 8QAPCh. 2 - Prob. 9QAPCh. 2 - Prob. 10QAPCh. 2 - Prob. 11QAPCh. 2 - Prob. 12QAPCh. 2 - Prob. 13QAPCh. 2 - Prob. 14QAPCh. 2 - Prob. 15QAPCh. 2 - Prob. 16QAPCh. 2 - Prob. 17QAPCh. 2 - Prob. 18QAPCh. 2 - Prob. 19QAPCh. 2 - Prob. 20QAPCh. 2 - Prob. 21QAPCh. 2 - Prob. 22QAPCh. 2 - Prob. 23QAPCh. 2 - Prob. 24QAPCh. 2 - Prob. 25QAPCh. 2 - Prob. 26QAPCh. 2 - Prob. 27QAPCh. 2 - Prob. 28QAPCh. 2 - Prob. 29QAPCh. 2 - Prob. 30QAPCh. 2 - Prob. 31QAPCh. 2 - Prob. 32QAPCh. 2 - Prob. 33QAPCh. 2 - Prob. 34QAPCh. 2 - Prob. 35QAPCh. 2 - Prob. 36QAPCh. 2 - Prob. 37QAPCh. 2 - Prob. 38QAPCh. 2 - Prob. 39QAPCh. 2 - Prob. 40QAPCh. 2 - Prob. 41QAPCh. 2 - Prob. 43QAPCh. 2 - Prob. 44QAPCh. 2 - Prob. 45QAP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The Sun is much closer to Earth than are the nearest stars, yet it is not possible to measure accurately the diurnal parallax of the Sun relative to the stars by measuring its position relative to background objects in the sky directly. Explain why.arrow_forwardExplain the origin of the magnitude designation for determining the brightness of stars. Why does it seem to go backward, with smaller numbers indicating brighter stars?arrow_forwardHow Do We Know? Why must a scientific argument dealing with some aspect of nature take all of the known evidence into account?arrow_forward
- How many degrees does the Sun move per day relative to the fixed stars? How many days does it take for the Sun to return to its original location relative to the fixed stars?arrow_forwardIs the Sun an average star? Why or why not?arrow_forwardIs the ecliptic the same thing as the celestial equator? Explain.arrow_forward
- What is an asterism? Can you name an example?arrow_forwardGalileos telescope showed him that Venus has a large angular diameter (61 arc seconds) when it is a crescent and a small angular diameter (10 arc seconds) when it is nearly full. Use the small-angle formula to find the ratio of its maximum to minimum distance from Earth. Is this ratio compatible with the Ptolemaic universe shown in Figure 3b of the Chapter 4 Concept Art: An Ancient Model of the Universe?arrow_forwardIf we view a star now, and then view it again 6 months later, our position will have changed by the diameter of the Earth's orbit around the sun. For nearby stars (within 100 light-years or so), the change in viewing location is sufficient to make the star appear to be in a slightly different location in the sky. Half of the angle from one location to the next is known as the parallax angle (see figure). Parallax can be used to measure the distance to the star. An approximate relationship is given by d = 3.26 p , where d is the distance in light-years, and p is the parallax measured in seconds of arc. Vega is a star that has a parallax angle of 0.13 second. How far is Vega from the sun? Note: Parallax is used not only to measure stellar distances. Our binocular vision actually provides the brain with a parallax angle that it uses to estimate distances to objects we see. (Round your answer to two decimal places.) light-yearsarrow_forward
- Review Conceptual Example 3 for information pertinent to this problem. When we look at a particular star, we are seeing it as it was 307 years ago. How far away from us (in meters) is the star? Take a year to be 365.25 days.arrow_forwardThe nearest star to our sun is Proxima Centauri, at a distance of 4.3 light-years from the Sun. A light-year is the distance that light travels in one year (365 days). How far away, in kilometers, is Proxima Centauri from the Sun?Express your answer using two significant figures.arrow_forward............ describes the wobbling of Earth's axis of rotation over long periods of time. It takes roughly ........ years (don't include commas) to complete one full cycle. This means that the star Polaris will not always directly align with the North Celestial Pole.arrow_forward
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