21st Century Astronomy: The Solar System (Sixth Edition)
6th Edition
ISBN: 9780393691283
Author: Laura Kay; Stacy Palen; George Blumenthal
Publisher: W. W. Norton
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Chapter 17, Problem 45QP
To determine
The size of a neutron star that has the mass of the Sun.
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Chapter 17 Solutions
21st Century Astronomy: The Solar System (Sixth Edition)
Ch. 17.1 - Prob. 17.1CYUCh. 17.2 - Prob. 17.2CYUCh. 17.3 - Prob. 17.3CYUCh. 17.4 - Prob. 17.4CYUCh. 17 - Prob. 1QPCh. 17 - Prob. 2QPCh. 17 - Prob. 3QPCh. 17 - Prob. 4QPCh. 17 - Prob. 5QPCh. 17 - Prob. 6QP
Ch. 17 - Prob. 7QPCh. 17 - Prob. 8QPCh. 17 - Prob. 9QPCh. 17 - Prob. 10QPCh. 17 - Prob. 11QPCh. 17 - Prob. 12QPCh. 17 - Prob. 13QPCh. 17 - Prob. 14QPCh. 17 - Prob. 15QPCh. 17 - Prob. 16QPCh. 17 - Prob. 17QPCh. 17 - Prob. 18QPCh. 17 - Prob. 19QPCh. 17 - Prob. 20QPCh. 17 - Prob. 21QPCh. 17 - Prob. 22QPCh. 17 - Prob. 23QPCh. 17 - Prob. 24QPCh. 17 - Prob. 25QPCh. 17 - Prob. 26QPCh. 17 - Prob. 27QPCh. 17 - Prob. 28QPCh. 17 - Prob. 29QPCh. 17 - Prob. 30QPCh. 17 - Prob. 31QPCh. 17 - Prob. 32QPCh. 17 - Prob. 33QPCh. 17 - Prob. 34QPCh. 17 - Prob. 35QPCh. 17 - Prob. 36QPCh. 17 - Prob. 37QPCh. 17 - Prob. 38QPCh. 17 - Prob. 39QPCh. 17 - Prob. 40QPCh. 17 - Prob. 41QPCh. 17 - Prob. 42QPCh. 17 - Prob. 43QPCh. 17 - Prob. 44QPCh. 17 - Prob. 45QP
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- A black hole is an object with mass, but no spatial extent. It truly is a particle. A black hole may form from a dead star. Such a black hole has a mass several times the mass of the Sun. Imagine a black hole whose mass is ten times the mass of the Sun. a. Would you expect the period of an object orbiting the black hole with a semimajor axis of 1 AU to have a period greater than, less than, or equal to 1 yr? Explain your reasoning. b. Use Equation 7.6 to calculate this period.arrow_forwardUnder some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. The density of a neutron star is roughly 10¹4 times as great as that of ordinary solid matter. Suppose we represent the star as a uniform, solid, rigid sphere, both before and after the collapse. The star's initial radius was 7.0×105 km (comparable to our sun); its final radius is 18 km.arrow_forwardAstrophysical theory suggests that a burned-out star whose mass is at least three solar masses will collapse under its own gravity to form a black hole. If it does, what is the radius of its event horizon?arrow_forward
- What is the average density of a neutron star that has the same mass as the sun but a radius of only 20.0 km if the radius of the neutron star is 57.999 km?arrow_forwardGiven the mass of the sun (1.989 x 10^30 kg), calculate the average density of a neutron star with a radius of 45.439 km.arrow_forwardIf the radius of the neutron star is 85.074 km, what is the average density of a neutron star that has the same mass as the sun but a radius of only 20.0 km? (express your answer in the proper SI unit and without scientific notation)arrow_forward
- What is the average density of a neutron star that has the same mass as the sun if the radius of the neutron star is 41.591 km?(express the answer in the proper SI unit and without scientific notation)arrow_forwardBlack holes with masses smaller than those formed in supernovas may have been created in the Big Bang.Calculate the radius of one that has a mass equal to the Earth’s.arrow_forwardAstronomers discover a binary system with a period of 90 days. Both stars have a mass twice that of the Sun. How far apart are the two stars? Both stars revolve around the center of mass in an orbit with radius r. F2oni d=ar Fron2 The distance between the stars is 2r.arrow_forward
- What is the average density of a neutron star that has the same mass as the sun but a radius of only 20.0 km?arrow_forwardThe Sun’s lifetime is about 10 billion years. Estimate the lifetime of a star with twice the mass of the Sun.arrow_forwardIf the radius of the Sun is 7 x 108 m, how does the black hole’s radius compare? (Divide the radius of the Sun by the Schwarzschild radius). Your answer should be in the form of “The Sun is _____ times smaller/bigger than the black hole.” Rsun=7x108 m Rs=29.64kmarrow_forward
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