[填空题]
Two objects attract eacwr0)nby * h;ha.d q9g4ec4 d1iehi)p sh2zp dy5i78/m v*y mneg other gravitationally with a force of 2.5$ \times 10^{-10} \mathrm{~N}$ when they are 0.25 m apart.
Their total mass is 4.0 kg . Find their individual masses. m$_1$ = m$_2$ =
