Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 1, Problem 1P
The diameter of Earth across the equator is 7928 miles. If a mile equals 1.609 km. what is Earths diameter in kilometers? In centimeters?
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Chapter 1 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 1 - What is the largest dimension of which you have...Ch. 1 - What is the difference between our Solar System,...Ch. 1 - Why are light-years more convenient than miles,...Ch. 1 - Why is it difficult to detect planets orbiting...Ch. 1 - Prob. 5RQCh. 1 - What is the difference between the Milky Way and...Ch. 1 - What are the largest known structures in the...Ch. 1 - Prob. 8RQCh. 1 - How Do We Know? How does the scientific method...Ch. 1 - You and three of your friends have won an...
Ch. 1 - Think back to the last time you got a new phone...Ch. 1 - The diameter of Earth across the equator is 7928...Ch. 1 - The diameter of the Moon across its equator is...Ch. 1 - One astronomical unit is about 1.50108 km. Explain...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 3.00105 km/s. how many...Ch. 1 - How long does it take light to cross the diameter...Ch. 1 - The nearest large galaxy to our n is about 2.5...Ch. 1 - How many galaxies like our own would it take Laid...Ch. 1 - In Figure 1-4, the division between daylight and...Ch. 1 - Prob. 2LTLCh. 1 - Prob. 3LTLCh. 1 - Prob. 4LTL
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- The average radius of Earth is typically accepted to be approximately 6371 km. Using this dimension, determine the surface area in km2 and the volume in km3. Give both answers in scientific notation to one decimal place.arrow_forwardIn the US, lengths are often measured in inches, feet, yards and miles. Let's do some conversions. The definition of the inch is: 1 inch = 25.4 mm, exactly. A foot is 12 inches and a mile is 5280 ft, exactly. A centimetre is exactly 0.01 m or 10 mm. Sammy is 5 feet and 5.3 inches tall. Mark all the true statements below (Hint: use the 'multiply by 1' technique. Use the appropriate number of sig figs.)arrow_forwardThe volume of Earth is on the order of 1021 m3. (a) What is this in cubic kilometers (km3)? (b) What is it in cubic miles (mi3)? (c) What is it in cubic centimeters (cm3)?arrow_forward
- Suppose velocity of an object is 5.7 miles per hour. When asking this as a question, say, what is velocity in m/s -- meaning meters/sec then we think dimensional analysis: 1 mile = 5280 ft, 1 ft = 12 in., 1 m = 39.37 in., 1 hour = 60 min, 1 min = 60 s In short ft to in to meters; also hours to min to seconds. -- dimensional analysis. However, in all this, do we think that avg velocity = change in distance/change in time. Please explain.arrow_forwardThere are 2600 miles between Boston and Los Angeles (in a straight line). If a plane flies at 600miles/hour. How long is the flight between Boston and LA? (ROUND OFF ANSWER TO TWO DECIMAL PLACES)arrow_forwardEarth’s density is about 5520 kg/m3 . Determine the density in g/cm3 by unit conversion.arrow_forward
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- The average depth of the oceans is about 3.63 km, and oceans cover about 70% of Earth’s surface. Make an order-of-magnitude estimate of the volume of water in the oceans. The circumference of Earth is about 40 000 kilometers.arrow_forward1 CENTI (meter/litre/gram) = 10 MILLI (meters/litre/gram) 1 meter/litre/gram = 100 CENTI (meters/litres/grams) = 1000 MILLI (meters/litre/gram) 1 KILO (meter/litre/gram) = 1000 (meter/litre/gram) = 105 CENTI (meters/litres/grams) = 106 MILLI (meters/litre/gran Convert 74 millimetres (mm) to kilometres (km) Answer: 7.4e-5 Convert 115 cm2 to km? Answer: 1.15e-8 Convert 1054 milligrams (mg) to grams (g). Answer: 1.054arrow_forwardFour astronauts are in a spherical space station. (a) If, as is typical, each of them breathes about 500 cm3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year? (b) What would the diameter (in meters) of the space station have to be to contain all this air?arrow_forward
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