Understanding Our Universe
Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 1, Problem 37QAP
To determine

The distance of nearby town in miles and time; express the distance to a nearby friend’s house in terms of distance and in terms of time.

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Within the Solar System, a convenient unit of measurement is the Earth-Sun distance, called an astronomical unit (AU). For bigger distances, we use the light year (LY), the distance that light travels in one year. Starting with the values you can look up in the Appendices for the speed of light and the astronomical unit, calculate how many “light minutes” there are in 1 AU.
1Which of the following best describes a frame of reference?   an experiment that proved that Earth did not have an aether wind   the theory that describes the behavior and characteristics of objects moving at relativistic speeds   the effect of the slowing of time as an object moves with high speeds   a point in which someone relates the behavior of an object from one perspective 2If an electron moves from n = 5 to n = 1, what wavelength of light is emitted? (h = 6.626 x 10-34, 1 eV = 1.6 x 10-19 J)   4008 nm   434 nm   95 nm   1281 nm   3Which of the following best describes a frame of reference?   an experiment that proved that Earth did not have an aether wind   the theory that describes the behavior and characteristics of objects moving at relativistic speeds   the effect of the slowing of time as an object moves with high speeds   a point in which someone relates the behavior of an object from…
A light-year is the distance that light can travel in one year. Similarly, we can define a light-second, light-day, etc. as the distance that light can travel in other time intervals. Calculate the distance represented by each of the following: (Assume that the speed of light is 3 × 108 m/s). 1. 4 light-seconds 2. 3 light-minutes 3. 2 light-days 4. 2 light-days, but this time answer in miles (enter just the number with no units)
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