Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 1, Problem 31Q
To determine
The distance of Voyager spacecraft from earth, when it sent the picture of Neptune.
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If Mars is 1.5x108 km from Earth, how long does it take radio signals from the Curiosity rover to reach us? (the speed of light is about 3x105 km/sec)
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At a given point, venus is 37.5 million miles from the earth. How long does it take for light to leave a source on earth and reach venus? give the answer in seconds. (the speed of light is 2.998x10^8 m/sec and 1 km= 0.62 miles)
Chapter 1 Solutions
Universe: Stars And Galaxies
Ch. 1 - Prob. 1QCh. 1 - Prob. 2QCh. 1 - Prob. 3QCh. 1 - Prob. 4QCh. 1 - Prob. 5QCh. 1 - Prob. 6QCh. 1 - Prob. 7QCh. 1 - Prob. 8QCh. 1 - Prob. 9QCh. 1 - Prob. 10Q
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- Which planets axis of rotation is a peculiarity, and why?arrow_forwardThe main advantage of taking images of our planet from high-altitude orbits is that you can see a large fraction of the Earth's surface. The main disadvantage is that there will be too many low-altitude satellites obscuring your view of the Earth high-altitude satellites must launch to the west, which is more costly being at high altitude makes your satellite subject to strict international regulations you can't see as much detail in images taken from high altitudearrow_forwardOn August 27, 2003, the planet Mars was at a distance of 0.373 AU from Earth. The diameter of Mars is 6788 km. Calculate the angular diameter of Mars, as seen from Earth on August 27, 2003. Give your answer in arcminutes.arrow_forward
- You and your pen pal from Mars are comparing to see who is taller. You write to yourfriend that you are 1.7018 m tall. Your pen pal writes back that they are 58.19 orfzagstall. An orfzag is a Martian unit equivalent to exactly 26 glibchoms (another Martianunit). One meter is approximately 936.36 glibchoms. Who is taller? Report bothheights in meters to the appropriate number of significant figures. Show yourreasoning and all work.arrow_forwardIf Captain Nemo traveled 20,000 leagues under the sea, and 1 league is equal to 3.5 miles, then how many miles did he travel?arrow_forwardAt a given point, Venus is 37.5 million miles from the earth. How long does it take for light to leave a source on earth and reach Venus? Give the answer in seconds. (The speed of light is 2.998 x 10^8 m/sec and 1 km= 0.62 miles)arrow_forward
- Electronic communication via radio travels at approximately the speed of light (186,000 miles/second). The edge of the solar system is roughly at Pluto, which is 3.6 × 109 miles from Earth at its closest approach. How many hours does it take for a radio signal from Earth to reach Pluto? A. 2.5 hrs B. 3.2 hrs C. 5.4 hrs D. 10 hrsarrow_forwardThe Msbar Alamal on its journey to Mars took a 7-month period, during which it traveled an estimated distance of 493 million kilometers. What was the distance covered during a 7-day period?arrow_forwardDraw a picture that explains why Venus goes through phases the way the Moon does, according to the heliocentric cosmology. Does Jupiter also go through phases as seen from Earth? Why?arrow_forward
- One planet is three times farther from the Sun than another. Will the farther planet take more, less, or the same amount of time to orbit the Sun? Will the closer planet orbit slower, faster, or the same speed? How much longer will the farther planet take to orbit than the closer planet? If the closer planet is located at 10 AU, how far is the farther planet, and what are the two planet's names?arrow_forwardWhy do we say that Neptune was the first planet to be discovered through the use of mathematics?arrow_forwardThe light a planet receives from the Sun (per square meter of planet surface) decreases with the square of the distance from the Sun. So a planet that is twice as far from the Sun as Earth receives (1/2)2=0.25 times (25%) as much light and a planet that is three times as far from the Sun receives (1/3)2=0.11 times (11%) as much light. How much light is received by the moons of Jupiter and Saturn (compared to Earth), worlds which orbit 5.2 and 9.5 times farther from the Sun than Earth?arrow_forward
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