White Dwarf Density.If a star the size of the Sun collapses to form a white dwarf the size of Venus, by what factor will itsdensity increase? (Hints: The volume of a sphere is Tp3. The radii of the Sun and Venus are 6.96x1053km and 6050 km, respectively.)Please round your answer to two significant digits.Pina!Pinitial

since the mass remains same , therefore the ratio of density is simply equal to reciprocal ratio of…

White Dwarf Density. If a star the size of the Sun collapses to form a white dwarf the size of Venus, by what factor will its density increase? (Hints: The volume of a sphere is Tr. The radii of the Sun and Venus are 6.96x105 3 km and 6050 km, respectively.) Please round your answer to two significant digits. Pinal -0 Pinitial

White Dwarf Density. If a star the size of the Sun collapses to form a white dwarf the size of Venus, by what factor will its density increase? (Hints: The volume of a sphere is Tr. The radii of the Sun and Venus are 6.96x105 3 km and 6050 km, respectively.) Please round your answer to two significant digits. Pinal -0 Pinitial

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter9: The Formation And Structure Of Stars

Section: Chapter Questions

Problem 4P

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Similar questions

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At the average density of a star-forming molecular cloud, about 900 atoms per cm3, determine how large a sphere you would need to encompass mass equal to that of the Sun? Enter the radius of this sphere in light-years. (HINTS: 900 atoms per cm3 corresponds to a density of 1.51×10-18kg/m^3; the mass of the Sun is 2×1030kg) (The volume of a sphere is 4/3 * π * R3) (my previous answer of 6.812 X 1015 was incorrect)
Suppose a protostar has a luminosity of 39,473 L⊙ and a surface temperature of 4,130 K (Kelvins). What is the radius of this protostar? [Enter your answer as a multiple of the Sun's radius. I.e., if you find R = 20 R⊙ , enter 20. This problem is easier if you start with the relevant equation and create a ratio using the Sun's values. Recall that the Sun has a surface temperature of 5778 K. ]
The evolutionary track for a star of 1 solar mass remains nearly vertical in the HR diagram for a while (see Figure 21.12). How is its luminosity changing during this time? Its temperature? Its radius? Figure 21.12 Evolutionary Tracks for Contracting Protostars. Tracks are plotted on the HR diagram to show how stars of different masses change during the early parts of their lives. The number next to each dark point on a track is the rough number of years it takes an embryo star to reach that stage (the numbers are the result of computer models and are therefore not well known). Note that the surface temperature (K) on the horizontal axis increases toward the left. You can see that the more mass a star has, the shorter time it takes to go through each stage. Stars above the dashed line are typically still surrounded by infalling material and are hidden by it.
Consider the following five kinds of objects: open cluster, giant molecular cloud, globular cluster, group of O and B stars, and planetary nebulae. A. Which occur only in spiral arms? B. Which occur only in the parts of the Galaxy other than the spiral arms? C. Which are thought to be very young? D. Which are thought to be very old? E. Which have the hottest stars?