Physics For Scientists & Engineers With Modern Physics, Vol. 3 (chs 36-44) (4th Edition)
4th Edition
ISBN: 9780132274005
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 44, Problem 42GP
To determine
The power output of the star.
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Chapter 44 Solutions
Physics For Scientists & Engineers With Modern Physics, Vol. 3 (chs 36-44) (4th Edition)
Ch. 44.1 - Suppose we could place a huge mirror 1 light-year...Ch. 44.2 - Prob. 1BECh. 44.4 - What is the Schwarzschild radius for an object...Ch. 44.4 - A black hole has radius R. Its mass is...Ch. 44.9 - Prob. 1EECh. 44 - The Milky Way was once thought to be murky or...Ch. 44 - Prob. 2QCh. 44 - Prob. 3QCh. 44 - Prob. 4QCh. 44 - Prob. 5Q
Ch. 44 - Prob. 6QCh. 44 - Prob. 7QCh. 44 - Prob. 8QCh. 44 - Prob. 9QCh. 44 - Prob. 10QCh. 44 - Prob. 11QCh. 44 - Prob. 12QCh. 44 - Prob. 13QCh. 44 - Compare an explosion on Earth to the Big Bang....Ch. 44 - If nothing, not even light, escapes from a black...Ch. 44 - Prob. 16QCh. 44 - Prob. 17QCh. 44 - Explain what the 2.7-K cosmic microwave background...Ch. 44 - Prob. 19QCh. 44 - Prob. 20QCh. 44 - Prob. 21QCh. 44 - Under what circumstances would the universe...Ch. 44 - Prob. 23QCh. 44 - Prob. 24QCh. 44 - Prob. 1PCh. 44 - Prob. 2PCh. 44 - Prob. 3PCh. 44 - Prob. 4PCh. 44 - Prob. 5PCh. 44 - Prob. 6PCh. 44 - (II) What is the relative brightness of the Sun as...Ch. 44 - Prob. 8PCh. 44 - Prob. 9PCh. 44 - Prob. 10PCh. 44 - Prob. 11PCh. 44 - Prob. 12PCh. 44 - Prob. 13PCh. 44 - Prob. 14PCh. 44 - Prob. 15PCh. 44 - Prob. 16PCh. 44 - Prob. 17PCh. 44 - Prob. 18PCh. 44 - Prob. 19PCh. 44 - Prob. 20PCh. 44 - Prob. 21PCh. 44 - Prob. 22PCh. 44 - Prob. 23PCh. 44 - Prob. 24PCh. 44 - Prob. 25PCh. 44 - Prob. 26PCh. 44 - Prob. 27PCh. 44 - Prob. 28PCh. 44 - Prob. 29PCh. 44 - Prob. 30PCh. 44 - Prob. 31PCh. 44 - (II) Calculate the peak wavelength of the CMB at...Ch. 44 - Prob. 33PCh. 44 - (II) The scale factor or the universe (average...Ch. 44 - Prob. 35PCh. 44 - Prob. 36PCh. 44 - Prob. 37GPCh. 44 - Prob. 38GPCh. 44 - Prob. 39GPCh. 44 - Prob. 40GPCh. 44 - Prob. 41GPCh. 44 - Prob. 42GPCh. 44 - Prob. 43GPCh. 44 - Prob. 44GPCh. 44 - Prob. 45GPCh. 44 - Prob. 46GPCh. 44 - Prob. 47GPCh. 44 - Prob. 48GPCh. 44 - Prob. 49GPCh. 44 - Prob. 50GPCh. 44 - Calculate the Schwarzschild radius using a...Ch. 44 - How large would the Sun be if its density equaled...Ch. 44 - Prob. 53GPCh. 44 - (a) Use special relativity and Newtons law of...Ch. 44 - Prob. 55GPCh. 44 - Prob. 56GPCh. 44 - Prob. 57GPCh. 44 - Prob. 58GP
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- The core of a star collapses during a supernova, forming a neutron star. Angular momentum of the core is conserved, and so the neutron star spins rapidly. If the initial core radius is 5.0×105 km and it collapses to 10.0 km, find the neutron star’s angular velocity in revolutions per second, given thecore’s angular velocity was originally 1 revolution per 30.0 days.arrow_forwardIf a neutron star has a radius of 15 km and rotates 748 times a second, what is the speed of the surface at the neutron star's equator as a fraction of the speed of light?arrow_forwardAssume that the laws of Newtonian mechanics and Newtonian gravity still hold for a neutron star, what approximately is the escape velocity at the surface of a 1.4 solar mass neutron with a radius of 10 km? A. 2×108 m/s B. 108 m/s C. 1.5 ×108 m/s D. 2.5 ×108 m/sarrow_forward
- After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. In this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of the Earth.Calculate the average density of the white dwarf.Calculate the surface free-fall acceleration.Calculate the gravitational potential energy associated with a 6.69-kg object at the surface of the white dwarf.arrow_forwardA neutron star is an astrophysical object having a mass of roughly 2.8 × 1030 kg (about 1.4 times the mass of the sun) but a radius of only about 12 km. If you were in a circular orbit of radius 320 km (about 200 mi), how long would it take you to go once around the star? It would take about _______ s to go once around the star.arrow_forwardAfter the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. In this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of the Earth. (a) Calculate the average density of the white dwarf. (kg/m3)(b) Calculate the surface free-fall acceleration.( m/s2)(c) Calculate the gravitational potential energy associated with a 1.36-kg object at the surface of the white dwarf.( J)arrow_forward
- The core of a star collapses during a supernova, fanning a neutron star. Angular momentum of the core is conserved, so the neutron star spins rapidly. If the initial core radius is 5.0105km and it collapses to 10.0 km, find the neutron star's angular’ velocity in revolutions per second, given the core’s angular’ velocity was originally 1 revolution per 30.0 days.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_forwardA star has the same size as the sun but with a mass five times as great. It rotates one revolution every five days about its axis. Suppose it collapsed into a neutron star, reducing its size to 75 percent of its original size and losing 10 percent of its mass in the process. What would be its angular speed? Assume the star to be a uniform sphere at all times. Neglect also the angular momentum accompanying the lost mass.arrow_forward
- If a star is to eventually form a stellar black hole at any point in its life cycle what must happen? A. Gravity must be strong enough to compress all its material to be smaller than its schwartzchild radius B. it must pass by a supermassive black hole and tidal forces will do the rest C. Gravity must expand it so it can over power the nuclear forces that compress it and keep it from exploding by giving off all its heat D. A star will always have the same mass and radius and the only black holes that exist are ones that have existed shortly after the big bangarrow_forward Q/ b) Vega Star of radius (1.6832) million km emit a) thermal radiation as a black body radiation at temperature of (18500 K). Calculate the Luminosity of this star. [o is Stefan-Boltzmann constant = 5.67 *x 10-5 erg cm-2 K-4 s-1]arrow_forwardThe white dwarf that remains when our Sun dies will be mostly made of A. helium. B. carbon. C. neutrons. D. hydrogen. Is the answer B? Thanks!arrow_forward
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