An extremely dense neutron with mass equal to that of the sun has a radius of about 10 km about the size of manhattan island. These stars are thought to rotate once about every 0.03 to 4 s, depending on their size and mass. Suppose that the neutron star described in the first sentence rotates once every 0.040 s. If its volume then expanded to occupy a uniform sphere of radius 1.4x10^8 m with no change in mass or rotational momentum, what time interval would be required for one rotation ? By comparision, the sun rotates once about its axis each month.