ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
9th Edition
ISBN: 9780135795750
Author: Bennett
Publisher: PEARSON
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Chapter 14, Problem 33EAP
Which of these black holes exerts the weakest tidal forces on an object near its event horizon? (a) a 10MSun black hole (b) a 100MSun black hole (c) a 106MSun black hole
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Chapter 14 Solutions
ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
Ch. 14 - Prob. 1VSCCh. 14 - Prob. 2VSCCh. 14 - Prob. 3VSCCh. 14 - Prob. 4VSCCh. 14 - Prob. 5VSCCh. 14 - Prob. 1EAPCh. 14 - Prob. 2EAPCh. 14 - Prob. 3EAPCh. 14 - Prob. 4EAPCh. 14 - Prob. 5EAP
Ch. 14 - Prob. 6EAPCh. 14 - Prob. 7EAPCh. 14 - Prob. 8EAPCh. 14 - Prob. 9EAPCh. 14 - Prob. 10EAPCh. 14 - Prob. 11EAPCh. 14 - Prob. 12EAPCh. 14 - Prob. 13EAPCh. 14 - Prob. 14EAPCh. 14 - Prob. 15EAPCh. 14 - Prob. 16EAPCh. 14 - Prob. 17EAPCh. 14 - Prob. 18EAPCh. 14 - Prob. 19EAPCh. 14 - Prob. 20EAPCh. 14 - Prob. 21EAPCh. 14 - Prob. 22EAPCh. 14 - Prob. 23EAPCh. 14 - Prob. 24EAPCh. 14 - Gravitational waves are best observed with the...Ch. 14 - Prob. 26EAPCh. 14 - Prob. 27EAPCh. 14 - Prob. 28EAPCh. 14 - Prob. 29EAPCh. 14 - Prob. 30EAPCh. 14 - Prob. 31EAPCh. 14 - Viewed from a distance, how would a flashing red...Ch. 14 - Which of these black holes exerts the weakest...Ch. 14 - Current evidence indicates that most gamma-ray...Ch. 14 - Prob. 35EAPCh. 14 - Black Holes in Popular Culture. Expressions such...Ch. 14 - Too Strange to Be True? Despite strong theoretical...Ch. 14 - 37. Unanswered Questions. You have seen in this...Ch. 14 - Prob. 41EAPCh. 14 - Prob. 42EAPCh. 14 - Prob. 43EAPCh. 14 - Prob. 44EAPCh. 14 - Prob. 45EAPCh. 14 - Prob. 46EAPCh. 14 - Prob. 47EAPCh. 14 - Prob. 48EAPCh. 14 - Surviving the Plunge. The tidal forces near a...Ch. 14 - Black Holes. Andrew Hamilton, a professor at the...Ch. 14 - Prob. 51EAPCh. 14 - Prob. 52EAPCh. 14 - Prob. 53EAPCh. 14 - Prob. 54EAPCh. 14 - Prob. 55EAP
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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_forwardAs a person approaches the Schwarzschild radius fo a black hole, outside observers see all the processes of that person (their clocks, their heart rate, etc.) slowing down, and coming to a halst as they reach the Schwarzschild radius. (The person falling into the black hole sees their own processes unaffected.) But the speed of light is the same everywhere for all observers. What does this say about space as you approach the black hole?arrow_forwardWhat characteristics must a binary star have to be a good candidate for a black hole? Why is each of these characteristics important?arrow_forward
- Use the result from Exercise 24.21 to calculate the radius of a black hole with a mass equal to: the Earth, a B0-type main-sequence star, a globular cluster, and the Milky Way Galaxy. Look elsewhere in this text and the appendixes for tables that provide data on the mass of these four objects.arrow_forwardA stellar black hole may form when a massive star dies. The mass of the star collapses down to a single point. Imagine an astronaut orbiting a black hole having eight times the mass of the Sun. Assume the orbit is circular. a. Find the speed of the astronaut if his orbital radius is r = 1 AU. b. Find his speed if his orbital radius is r = 11.8 km. c. CHECK and THINK: Compare your answers to the speed of light in a vacuum. What would the astronauts orbital speed be if his orbital radius were smaller than 11.8 km?arrow_forwardWhat is the orbital period (in s) of a bit of matter in an accretion disk that is located 6 ✕ 105 km from a 99 M black hole? Hint: Use the circular orbit velocity formula, Vc = GM r . sarrow_forward
- What is the Schwarzschild radius (in km) of a 20 solar mass black hole?arrow_forwardAn AGN hosts a central Black Hole of mass 2×1038×1038 kg. The AGN emits at 1/51/5 of the Eddington limit. Find the luminosity of the AGN. Give your answer in Watts to 3 significant figures.arrow_forwardWhich of the following statements about black holes are true? (select all that apply) If you watch someone else fall into a black hole, you will never see him or her cross the event horizon. However, he or she will fade from view as the light he or she emits (or reflects) becomes more and more redshifted. If you fell into a black hole, you would experience time to be running normally as you plunged rapidly across the event horizon. If we watch a clock fall toward a black hole you will see it tick slower and slower as it falls nearer to the event horizon. If the Sun magically disappeared and was replaced by a black hole of the same mass, Earth would soon be sucked into the black hole.arrow_forward
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