An experimenter wants to separate silver atoms in a Stern-Gerlach experiment by at least 1 cm（a large separation） as they exit the magnetic field.To heat the silver， she has an oven that can reach 1000°C and needs to order a suitable magnet.What should be

An experimenter wants to separate silver atoms in a Stern-Gerlach experiment by at least 1 cm（a large separation） as they exit the magnetic field.To heat the silver， she has an oven that can reach 1000°C and needs to order a suitable magnet.What should be the magnet specifications？（）
A.57 T·m
B.24 T·m
C.39 T·m
D.75 T·m
正确答案：57 T·m