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# The magnitude of the magnetic dipole moment of Earth is $8.0 \times 10^{22} \mathrm{J} / \mathrm{T}$ . (a) If the origin of this magne- tism were a magnetized iron...

## Question

###### The magnitude of the magnetic dipole moment of Earth is $8.0 \times 10^{22} \mathrm{J} / \mathrm{T}$ . (a) If the origin of this magne- tism were a magnetized iron sphere at the center of Earth, what would be its radius? (b) What fraction of the volume of Earth would such a sphere occupy? Assume complete alignment of the dipoles. The density of Earth's inner core is 14 $\mathrm{g} / \mathrm{cm}^{3} .$ The magnetic dipole moment of an iron atom is $2.1 \times 10^{-23} \mathrm{J} / \mathr The magnitude of the magnetic dipole moment of Earth is$8.0 \times 10^{22} \mathrm{J} / \mathrm{T}. (a) If the origin of this magne- tism were a magnetized iron sphere at the center of Earth, what would be its radius? (b) What fraction of the volume of Earth would such a sphere occupy? Assume complete alignment of the dipoles. The density of Earth's inner core is 14\mathrm{g} / \mathrm{cm}^{3} .$The magnetic dipole moment of an iron atom is$2.1 \times 10^{-23} \mathrm{J} / \mathrm{T}$. (Note: Earth's inner core is in fact thought to be in both liquid and solid forms and partly iron, but a permanent magnet as the source of Earth's magnetism has been ruled out by several considerations. For one the temperature is certainly above the Curie point.) ## Answers #### Similar Solved Questions 5 answers ##### Researchers conducted study of minimizing tractor skicding distances along new road in forest: The skidding distances (in meters were measured at 20 randomly selected road sites. The data are shown in the accompanying table. Conduct test to determine whether the population median skidding distance more than 400 meters. Use & = 0.10.429 347542 539380 251 347 380 196 400 390 241508 473247 535528 314439What are the null and alternative hypotheses for this hypothesis test?Ho: " = 400 Ha: % Researchers conducted study of minimizing tractor skicding distances along new road in forest: The skidding distances (in meters were measured at 20 randomly selected road sites. 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