(a) Calculate the magnetic dipole moment of a single atom. based on the following model: One...

  

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(a) Calculate the magnetic dipole moment of a single atom. based on the following model: One electron travels at speed 2.2 X 10° m/s in a circular orbit of diameter 10 10 m. (b) The individual atomic magnetic dipoles of magnetic matèrials (such as iron) are preferentially lined up to point in the same direction. If a fraction f of the dipoles are so aligned along the long axis (with the rest oriented randomly so that their magnetic dipol moments add vectorially to zero), what is the net magnetic di pole moment of a piece of such material 1 cm in area and 10 cm long? (The material may be viewed as an array of cubes, each which contains one atom and is 10 10 the torque experienced by the piece of material in part (b) in a field of 103 T when the magnetic field is directed at right angles m on a side.) (c) What is to the long axis of the material? (a) Calculate the magnetic dipole moment of a single atom. based on the following model: One electron travels at speed 2.2 X 10° m/s in a circular orbit of diameter 10 10 m. (b) The individual atomic magnetic dipoles of magnetic matèrials (such as iron) are preferentially lined up to point in the same direction. If a fraction f of the dipoles are so aligned along the long axis (with the rest oriented randomly so that their magnetic dipol moments add vectorially to zero), what is the net magnetic di pole moment of a piece of such material 1 cm in area and 10 cm long? (The material may be viewed as an array of cubes, each which contains one atom and is 10 10 the torque experienced by the piece of material in part (b) in a field of 103 T when the magnetic field is directed at right angles m on a side.) (c) What is to the long axis of the material?