Physics1Ahw8

Physics1Ahw8 - Physics 1A Problem Set # 8 Winter 2008 1)...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 1A Winter 2008 Problem Set # 8 1) The Crab Nebula is a cloud of glowing gas about 10 light-years across, located about 6500 light years from the earth. It is the remnant of a star that underwent a supernova explosion, seen on earth in 1054 a.d. Energy is released by the Crab Nebula at a rate of about 5 10 31 W, about 10 5 times the rate at which the sun radiates energy. The Crab Nebula obtains its energy from the rotational kinetic energy of a rapidly spinning neutron star at its center. This object rotates once every 0.0331 s, and this period is increasing by 4.22 10 -13 s for each second of time that elapses. If the rate at which energy is lost by the neutron star is equal to the rate at which energy is released by the nebula, find the moment of inertia of the neutron star. Theories of supernovae predict that the neutron star in the Crab Nebula has a mass about 1.4 times that of the sun. Modeling the neutron star as a solid uniform sphere, calculate its radius in kilometers. What is the linear speed of
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/30/2009 for the course PHYS 318001200 taught by Professor Musumeci during the Winter '07 term at UCLA.

Page1 / 2

Physics1Ahw8 - Physics 1A Problem Set # 8 Winter 2008 1)...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online