chapter 32 problem 53
Suppose that the magnetic dipole moment of Earth is 7.0x1020 J/T. (a) If theorigin of thismagnetism were a magnetized iron sphere at thecenter of Earth, whatwould be itsradius? (b) What fraction of thevolumeof Earth would such a sphere occupy? The radius of Earth is6.37 x106 m. Assume complete alignment of thedipoles.The density of Earth's inner core is 11 g/cm3.Themagnetic dipole moment of an iron atom is 2.1 x10-23J/T. Iron has a molar mass of 55.9 g/mol.(Note: Earth's inner coreis in fact thought to be in both liquidand solid forms and partlyiron, but a permanent magnet as thesource of Earth's magnetism hasbeen ruled out by severalconsiderations. For one, the temperatureis certainly above theCurie point.)
(a) Number Unitsm
(b)
Thank you
chapter 32 problem 53
Suppose that the magnetic dipole moment of Earth is 7.0x1020 J/T. (a) If theorigin of thismagnetism were a magnetized iron sphere at thecenter of Earth, whatwould be itsradius? (b) What fraction of thevolumeof Earth would such a sphere occupy? The radius of Earth is6.37 x106 m. Assume complete alignment of thedipoles.The density of Earth's inner core is 11 g/cm3.Themagnetic dipole moment of an iron atom is 2.1 x10-23J/T. Iron has a molar mass of 55.9 g/mol.(Note: Earth's inner coreis in fact thought to be in both liquidand solid forms and partlyiron, but a permanent magnet as thesource of Earth's magnetism hasbeen ruled out by severalconsiderations. For one, the temperatureis certainly above theCurie point.)
(a) Number Unitsm
(b)
