Activity #8: Stellar Remnants Name: Score 1. White dwarfs and neutron stars. A s

Question

Activity #8: Stellar Remnants Name: Score 1. White dwarfs and neutron stars. A spectral type B7 star like Alcyone in the open cluster Pleiades will end its stellar life by ejecting most of its mass into a planetary nebula. The remaining mass (the stellar core or corpse) will collapse into a white dwarf. A white dwarf is a member of a class of objects called compact objects that also includes neutron stars and black holes. Compact objects are incredibly dense. For white dwarfs, the outer electrons ofthe atoms that make up the star's matter are packed closely as a result ofelectron degeneracy. For neutron stars, under the immense pressure of gravity, the electrons have combined with the protons to form neutrons, leaving the neutrons in a state known as neutron degeneracy. a Given that the density of white dwarf is 105 kglm3 and that the density ofaneutron star is 1017 kg/m, determine the weights, in tons, of: tons Round to 1 decimal. (a) 1 cubic centimeter of white dwarf matter (b) 1 cubic centimeter (1 cm')of neutron star matter tons [Use scientific notation, round to 1 decimal. (c) Write your answer to b in words: tons [Write just as a whole number.] There are 100 (10 cm in 1 m. Hint How many cubic centimeters are there in 1 cubic meter?) Also, I ton (US)- 907 kg. Show your work in the box. Parts a, b, C each worth 10 pts; work 10 pt 40 pts tota]

Explanation / Answer

1 )1m3 of white dwarf has mass of 109kg.

1 cm3 of white dwarf will have 109*10-6=1000 kg = 1.1 ton.

2) 1m3 of neutron star has 10^17 kg mass

So 1 cm^3 of neutron will have 10^11 kg =1.1*10^8 ton.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.