A neutron star has a density equal to that of nuclear matter `(~= 2.8X0^(17) kg m^-3).` Assuming the star to be spherical, find the radius of the neutron star whose mass is `4.0X10^(30)kg.`

A neutron starj has a density equal to theat of nuclear matter (~= 2.8xx10^(17) kg//m^3). Assuming the star to be spherical, find the radius of the neutron star whose mass is 4.0xx10^(30)kg.

A neutron star has a density equal to that of the nuclear matter. Assuming the staar to be spherical, find the radius of a neutron star whose mass is 4.0xx10^30 kg (twice the mass of the sun ).

The order of magnitude of the density of nuclear matter is 10^(4) kg m^(-3)

Density of a neutron star is 2.7xx10^(17)kg m^(-3) . Assume the star to be spherical, calculate the radius of the neutron star if its mass is twice the mass of the sun. Take mass of the sun =2.0xx10^(30)kg

The Doppler effect has made it possible to discover the doubles stars which are so distance that their resolution by means of a telescope is impossible. The spectral lines of such stars periodically become doublets indicating that the radiations does come two stars revolving about their centre of mass. Assuming the masses of the two stars to be equal, find the distance between them and their masses if the maximum splitting of the spectral lines is equal to (Delta lambda//lambda)_(m) = 1.2.10^(-4) and occurs every tau = 30 days.

At what angular speed of rotation is the surface material on the equator of a neutron star on the verge of flying off the star if the star is spherical with a radius of 18.0 km and a mass of 7.72 xx 10^24 kg?

Consider a white dwarf and a nutron star beach of one solar mass. The radius of the white dwarf is same as that of the eartyh (=6400km) and the radius of the neutron star is 10 km. Determine the densities of the two types of the stars. Take mass of the sun =2.0xx10^(30) kg.

A massive star is spinning about its diameter with an angular speed omega_(0) = (pi)/(1000) rad/day. After its fuel is exhausted, the star collapses under its own gravity to form a neutron star. Assume that the volume of the star decreases to 10^(-12) times the original volume and its shape remains spherical. Assuming that density of the star is uniform, find the angular speed of the neutron star.

The Sun, which is 2.2 xx 10^20 m from the center of the Milky Way galaxy, revolves around that center once every 2.5 xx 10^8 years. Assuming each star in the Galaxy has a mass equal to the Sun's mass of 2.0 xx 10^30 kg, the stars are distributed uniformly in a sphere about the galactic center, and the Sun is at the edge of that sphere, estimate the number of stars in the Galaxy.