A neutron star and a white dwarf have been found orbiting each
other with a period of 26 minutes. If their masses are typical,
what is their average separation? Compare the separation with the
radius of the sun, 7 ✕ 105 km. (Hints: Use the
version of Kepler's third law for binary stars,
MA +
MB =
a3
P2
;
make sure you express quantities in units of AU, solar masses,
and years. Assume the mass of the neutron star...