Q. 2. a. The dimensions of a rectangular iron (Fe) box are given as; 1-2 cm, w=1 cm and t=0.5 cm. The atom density in the box is 4 × 10 12 atom/m³. If the magnetization of this box is equal to the alignment of 20% of the iron atoms in the box, find the total magnetic dipole moment of the box. (μFe = 2.1 × 1023 J/T)