Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 6, Problem 6EQFR
To determine
The need of a leap year.
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The earth revolves around the sun in exactly 365 1/4 days which is equivalent to 1 year. To make up for the loss of 1/4 day, the calendar was adjusted so that we have a leap year for every 4 years. If the earth were to speed in its motion slightly so that a year would be completed in exactly 365 days and 6 hours, how often would we need to have a leap year?
How to know the time zones.
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.
Chapter 6 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 6 - Prob. 1QFRCh. 6 - Prob. 2QFRCh. 6 - How do we know that Earth has a liquid core? Why...Ch. 6 - Prob. 4QFRCh. 6 - Prob. 5QFRCh. 6 - Prob. 6QFRCh. 6 - Prob. 7QFRCh. 6 - On what plate of the crust are you located? Which...Ch. 6 - Prob. 9QFRCh. 6 - Prob. 10QFR
Ch. 6 - Prob. 11QFRCh. 6 - How does the fact that Earth has a magnetic field...Ch. 6 - Prob. 13QFRCh. 6 - Prob. 14QFRCh. 6 - Prob. 15QFRCh. 6 - Prob. 16QFRCh. 6 - Prob. 17QFRCh. 6 - Prob. 1TQCh. 6 - Submarines contain ballast tanks that can take on...Ch. 6 - According to the Guinness Book of Mountains and...Ch. 6 - Flicking your finger against your cheek makes a...Ch. 6 - How does the eventual acceptance of the plate...Ch. 6 - If Earth rotated more slowly, would you expect it...Ch. 6 - Prob. 7TQCh. 6 - Prob. 8TQCh. 6 - Prob. 9TQCh. 6 - Suppose Earths radius were only half of its real...Ch. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 1TYCh. 6 - Prob. 2TYCh. 6 - Prob. 3TYCh. 6 - Prob. 4TYCh. 6 - Prob. 5TYCh. 6 - Prob. 6TYCh. 6 - Prob. 7TYCh. 6 - Prob. 8TYCh. 6 - Prob. 9TYCh. 6 - Prob. 1EQFRCh. 6 - Prob. 2EQFRCh. 6 - Prob. 3EQFRCh. 6 - Prob. 4EQFRCh. 6 - Prob. 5EQFRCh. 6 - Prob. 6EQFRCh. 6 - Prob. 7EQFRCh. 6 - Prob. 1ETQCh. 6 - Prob. 2ETQCh. 6 - Prob. 3ETQCh. 6 - Prob. 4ETQCh. 6 - Prob. 5ETQCh. 6 - Prob. 1EPCh. 6 - Prob. 2EPCh. 6 - Prob. 3EPCh. 6 - Prob. 4EPCh. 6 - Prob. 1ETYCh. 6 - Prob. 2ETYCh. 6 - Prob. 3ETYCh. 6 - Prob. 4ETY
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- In a part of Earth’s orbit where Earth is moving faster than usual around the Sun, would the length of the solar day change? If so, how? Explain.arrow_forwardExplain the origin of the leap year. Why is it necessary?arrow_forwardOn the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.arrow_forward
- Why are daytime and nighttime hours of equal length on an equinox?arrow_forwardGiven that Earth is about 4.6 billion (4.6 x 10%) years old, how many precessional cycles have occurred?arrow_forwardThere are 12 lunar months in a lunar calendar. The numbers of days of the lunar months differ by at most one day. The average number of days of a lunar month is approximately equal to the period of the lunar phase cycle. One year in a solar calendar is approximately equal to the period of the cycle of seasons. Which of the following can roughly keep a lunar calendar synchronized with a solar calendar? a) Adding a thirteenth lunar month to 7 out of every 19 years. b) Adding an extra day every 4 years. c) Having an extra month with 5 days each year. d) Skipping a lunar month every 7 out of 19 years.arrow_forward
- Why is it difficult to construct a practical calendar based on the Moon’s cycle of phases?arrow_forwardSuppose Earth took exactly 300.0 days to go around the Sun, and everything else (the day, the month) was the same. What kind of calendar would we have? How would this affect the seasons?arrow_forwardWhat is the latitude of the North Pole? The South Pole? Why does longitude have no meaning at the North and South Poles?arrow_forward
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