EBK FOUNDATIONS OF ASTRONOMY
14th Edition
ISBN: 8220106820612
Author: Backman
Publisher: YUZU
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Chapter 1, Problem 4P
A typical galaxy is shown on the first page of the Universe Bowl on the inside cover of the printed book. Express the number of stars in this typical galaxy in scientific notation.
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Chapter 1 Solutions
EBK FOUNDATIONS OF ASTRONOMY
Ch. 1 - Prob. 1RQCh. 1 - What is the largest dimension of which you have...Ch. 1 - What is the difference between the Solar System,...Ch. 1 - What is the difference between the Moon and a...Ch. 1 - Why do astronomers now label Pluto a dwarf planet?Ch. 1 - Why are light-years more convenient than miles,...Ch. 1 - Why is it difficult to detect planets orbiting...Ch. 1 - Prob. 8RQCh. 1 - What is the difference between the Milky Way and...Ch. 1 - What are the Milky Way Galaxys spiral arms?
Ch. 1 - Prob. 11RQCh. 1 - Where are you in the Universe? If you had to give...Ch. 1 - Prob. 13RQCh. 1 - Prob. 14RQCh. 1 - Prob. 15RQCh. 1 - How do we know? How does the scientific method...Ch. 1 - The equatorial diameter of Earth is 7928 miles. If...Ch. 1 - The equatorial diameter of the Moon is 3476...Ch. 1 - One astronomical unit (AU) is about 1.5 108 km....Ch. 1 - A typical galaxy is shown on the first page of the...Ch. 1 - The time of the Cambrian explosion is listed on...Ch. 1 - Venus orbits 0.72 AU from the Sun. What is that...Ch. 1 - Light from the Sun takes 8 minutes to reach Earth....Ch. 1 - The Sun is almost 400 times farther from Earth...Ch. 1 - If the speed of light is 3.0 105 km/s, how many...Ch. 1 - Prob. 10PCh. 1 - How long does it take light to cross the diameter...Ch. 1 - The nearest galaxy to our home galaxy is about 2.5...Ch. 1 - How many galaxies like our own would it take if...Ch. 1 - Arrange the following in order of increasing size:...Ch. 1 - Prob. 2SOPCh. 1 - The Sun is roughly 100 times the diameter of...Ch. 1 - Prob. 4SOPCh. 1 - Look at the center of Figure 14. Approximately...Ch. 1 - Look at Figure 1-6. How can you tell that Mercury...Ch. 1 - Prob. 3LTLCh. 1 - Look at Figure 1-9. Would you say that the...Ch. 1 - Of the objects listed here, which would be...Ch. 1 - Prob. 6LTL
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- Stars are spherical in shape. A star has a diameter of 77 x 1010 m. How many earths could fit inside this star. Diameter of earth 12800 km Note: Write the answer in scientific representation after rounding to two decimal places. Answer:arrow_forwardUsing the data in the table below and the appropriate conversion factors, find the mean distance to the moon, in feet. Approximate Values of Some Measured Lengths Length (m) Distance from Earth to most remote known quasar 1 ✕ 1026 Distance from Earth to most remote known galaxies 4 ✕ 1025 Distance from Earth to nearest large galaxy (M31 in Andromeda) 2 ✕ 1022 Distance from Earth to nearest star (Proxima Centauri) 4 ✕ 1016 One lightyear 9 ✕ 1015 Mean orbit radius of the Earth about the Sun 2 ✕ 1011 Mean distance from the Earth to the Moon 4 ✕ 108 Mean radius of the Earth 6 ✕ 106 Typical altitude of a satellite orbiting Earth 2 ✕ 105 Length of a football field 9 ✕ 101 Length of a housefly 5 ✕ 10-3 Size of the smallest dust particles 1 ✕ 10-4 Size of the cells of most living organisms 1 ✕ 10-5 Diameter of a hydrogen atom 1 ✕ 10-10 Diameter of an atomic nucleus 1 ✕ 10-14 Diameter of a proton 1 ✕ 10-15arrow_forwardPlease answer question in HANDWRITING ONLYarrow_forward
- question 1: parts A, B, and C pleasearrow_forwardIt is important to have an idea about the distances between and relative sizes of celestial objects in the solar system. In Part 1 we will pretend to shrink the solar system until its center piece, the Sun, is 67.3 cm in diameter. This will represent the Sun which is 1,390,000 km in diameter. The scale of our model is thus: 67.3 cm = 4.84 x 10-5 cm km Scale 1, 390, 000 km To find the size or distance between objects in centimeters for the model, simply multiply the actual size or distance in kilometers by the scale factor above. 1. Fill in following table: Quantity Actual Distance (km) Model Distance (cm) Diameter of Sun 1,390,000 Diameter of Earth 12,760 Diameter of Moon 3,480 Distance Between Earth and Sun 1.5 x 108 Distance Between Earth and Moon 384,000 Distance to Proxima Centauri 3.97 x 1013arrow_forwardOn a 1-to-10^19 scale our Milky Way galaxy would just about fit on a soccer field. On this scale, how far is the distance from the sun to alpha centauri (one of the closest stars to the sun, at a distance of 4.4 light years).arrow_forward
- Write the following measurements in scientific notation. All answers should be written up to hundredths place. Follow the rules in rounding off numbers. Quantity Measurement Scientific notation 1. diameter of the sun 1391400 km 2. Speed of light 2997792458 m/s 3. distance of the earth from the sun 149597870700 m 4. size of bacteria 0.0005 m 5. diameter of proton 0.000 000 000 001 mmarrow_forwarda method for determining the sizes of the orbits of pl from the sun than Earth. His method involved noting of days between the times that a planet was in the pc A and B in the diagram. Using this time and the num each planet's year, he calculated c and d. a. For Mars, c= 55.2 and d= 103.8. How far is Mars in astronomical units (AU)? One astronomical un the average distance from Earth to the center of th 93 million miles. b. For Jupiter, c 21.9 and d= 100.8. How far is Jup %3D sun in astronomical units? lo olpno er ort to rt .onte eteem-21 o to bre e ne ern 100 o ho aotem t elbl erl pnibioda lert pribiortarrow_forwardThe distance light travels in one second(one light-second) is about 1.86×10⁵ mi. Saturn is about 475 light-seconds from the sun. About how many miles from the sun is Saturn?arrow_forward
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