Certain neutron stars (extremely dense stars) are believed to be rotating at about 0.56 rev/s. If such a star has a radius of 48 km, what must be its minimum mass so that material on its surface remains in place during the rapid rotation

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.