Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 16, Problem 5CC
To determine
If the Sun was less massive, the pressure at Sun’s center would have been different.
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The mass of the sun is 2.0 x 1030 kg, and the mass of a hydrogen atom is 1.67 x
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At the surface of a red giant star, the gravitational force on 1 kg is only 2.2 x 10-3 N. If its mass equals 4 x 1031 kg, what is the star’s radius?
Chapter 16 Solutions
Universe
Ch. 16 - Prob. 1CCCh. 16 - Prob. 2CCCh. 16 - Prob. 3CCCh. 16 - Prob. 4CCCh. 16 - Prob. 5CCCh. 16 - Prob. 6CCCh. 16 - Prob. 7CCCh. 16 - Prob. 8CCCh. 16 - Prob. 9CCCh. 16 - Prob. 10CC
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- Give proper explanation The surface temperature of the Sun is about 5750 K. What is this temperature on the Fahrenheit scale?arrow_forwardSuppose a satellite has an escape velocity of 1.5 km/s. Oxygen atoms in the exosphere of the satellite have a temperature of 300 K and an average speed of 0.6 km/s. To what temperature would the exosphere have to cool to become low enough that oxygen atoms couldn't escape'arrow_forwardUsing the solution from the previous problem, find the increase in rotational kinetic energy, given the core’s mass is 1.3 times that of out Sun. Where does this increase in kinetic energy come from?arrow_forward
- Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility that there is life on one or more of these planets. To support life similar to that on the Earth, the planet must have liquid water. For an Earth-like planet orbiting a star like the Sun, this requirement means that the planet must be within a habitable zone of 0.9 AU to 1.4 AU from the star. The semimajor axis of an extrasolar planet is inferred from its period. What range in periods corresponds to the habitable zone for an Earth-like Planet orbiting a Sun-like star?arrow_forwardWhat is the acceleration of gravity (g) at the surface of the Sun? (See Appendix E for the Sun’s key characteristics.) How much greater is this than g at the surface of Earth? Calculate what you would weigh on the surface of the Sun. Your weight would be your Earth weight multiplied by the ratio of the acceleration of gravity on the Sun to the acceleration of gravity on Earth. (Okay, we know that the Sun does not have a solid surface to stand on and that you would be vaporized if you were at the Sun’s photosphere. Humor us for the sake of doing these calculations.)arrow_forwardIf gravitational contraction were responsible for the Sun's energy, how long would it take for the Sun's diameter to shrink by o.1%?arrow_forward
- A rotation rate, or frequency, of 500 nHz corresponds to a rotation period of 23 days—it takes 23 days for material to follow one complete circle around the Sun. Furthermore, the frequency and period are inversely proportional to one another: if one is doubled, the other is halved. Given these facts, what is the approximate rotation period (in days) for equatorial material at the Sun's surface? (Use your answer to the previous question as the rotation rate.)arrow_forwardWhat is the vrms of hydrogen on the surface of the sun if its temperature is 5.36E3 degC? What is the vrms of hydrogen on the surface of the earth if its temperature is 21.2 degC?arrow_forwardThe Sun's mass is 2.0x1030 kg, its radius is 7.0×105 km, and it has a rotational period of approximately 28 days. If the Sun should collapse into a white dwarf of radius 3.7x103 km, what would its period be if no mass were ejected and a sphere of uniform density can model the Sun both before and after?arrow_forward
- he Sun’s mass is 2.0×1030kg, its radius is 7.0×105km, and it has a rotational period of approximately 28 days. If the Sun should collapse into a white dwarf of radius 3.5×103km,, what would its period be if no mass were ejected and a sphere of uniform density can model the Sun both before and afterarrow_forwardIn the model shown in the table below, what fraction of the Sun's mass is hotter than 5,000,000 K? R/R SunT (106 K) Density (g/cm³) 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 0.006 0.60 1.2 2.3 3.1 4.9 5.1 6.9 9.3 13.1 15.7 0.00 0.009 0.035 0.12 0.40 1.3 4.1 13 36 89 150 M/M Sun L/L Sun 1.00 0.999 0.996 0.990 0.97 0.92 0.82 0.63 0.34 0.073 0.000 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.99 0.91 0.40 0.00arrow_forwardI need help calculating the surface gravity of the sun. (Not honor class) (Not grading)arrow_forward
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