일반물리학 2 — Maxwell's Equations; Magnetism of Matter: Problem 50

50 A sample of the paramagnetic salt to which the magnetization curve of Fig. 32-14 applies is held at room temperature (300 K). At what applied magnetic field will the degree of magnetic saturation of the sample be (a) 65% and (b) 90%? (c) Are these fields attainable in the laboratory?