Universe: Stars And Galaxies
Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 2, Problem 36Q
To determine

(a)

The elevation angle of the Sun above the southern horizon at the time of the vernal equinox.

To determine

(b)

The elevation angle of the Sun above the southern horizon at the time of winter solstice.

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You are at the Tropic of Capricorn(23.5 degrees Southlatitude), on the summer solstice at mid-day when the Sun is highest in the sky. A) What is the altitude of the Sun at this time in degrees? B) Describe the length of the shadow of a tall flagpole at this time and date? C) Melbourne is at latitude 28 degrees North. Will there ever be a day when the flagpole’s shadow disappears? Briefly justify your answers.
1) You are at the Tropic of Capricorn (23.5 degrees South latitude), on the summer solstice at mid- day when the Sun is highest in the sky. A) What is the altitude of the Sun at this time in degrees? B) Describe the length of the shadow of a tall flagpole at this time and date? C) Melbourne is at latitude 28 degrees North. Will there ever be a day when the flagpole's shadow disappears? Briefly justify your answers.
The number of hours of daylight in Boston is given by y=3sin [2π(x - 79)/365]  + 12, where x is the number of days after January 1. Solve, Within a year, when does Boston have 13.5 hours of daylight? Give your answer in days after January 1 and round to the nearest day.
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