Astronomy Today (9th Edition)
Astronomy Today (9th Edition)
9th Edition
ISBN: 9780134450278
Author: Eric Chaisson, Steve McMillan
Publisher: PEARSON
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Chapter 1, Problem 1MC
To determine

The correct option, from the following options, for the consequence of the situation when Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same,

(a) The night would be twice as long.

(b) The night would be half as long.

(c) The year would be half as long.

(d) The length of the day would be unchanged.

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Students have asked these similar questions
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?
Given that Earth is about 4.6 billion (4.6 x 10%) years old, how many precessional cycles have occurred?
Suppose the Sun were somehow replaced by a star with five times as much mass. How long would the Earth year last in this last case? (hint: Newton’s version of Kepler’s 3rd Law)
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Kepler's Three Laws Explained; Author: PhysicsHigh;https://www.youtube.com/watch?v=kyR6EO_RMKE;License: Standard YouTube License, CC-BY