Question

Suppose that the magnetic dipole moment of Earth is 9.7 x 1022 ?/T (a) If the origin of this magnetism 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? The radius of Earth is 6.37 x 106 m. Assume complete alignment of the dipoles. The density of Earths inner core is 14 g/cm3. The magnetic dipole moment of an iron atom is 2.1 × 10-23 J/T Iron has a molar mass of 55.9 g/mol. (Note Earths 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 Earths magnetism has been ruled out by several considerations. For one, the temperature is certainly above the Curie point.) (a) Number Units (b) Number Units

0 0
Add a comment Improve this question Transcribed image text
Answer #1

3 LAM 주지 2.2 30

Add a comment
Know the answer?
Add Answer to:
Suppose that the magnetic dipole moment of Earth is 9.7 x 1022 ?/T (a) If the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Earth has a magnetic dipole moment of 8.0 × 1022 J/T. (a) What current would have...

    Earth has a magnetic dipole moment of 8.0 × 1022 J/T. (a) What current would have to be produced in a single turn of wire extending around Earth at its geomagnetic equator if we wished to set up such a dipole? Could such an arrangement be used to cancel out Earth's magnetism (b) at points in space well above Earth's surface or (c) on Earth's surface? Round your answer (a) to 3 significant digits.

  • 1. Suppose that the dipole moment associated with an iron atom of an iron bar is...

    1. Suppose that the dipole moment associated with an iron atom of an iron bar is 1.6 × 10-23 J/T. Assume that all the atoms in the bar, which is 4.3 cm long and has a cross-sectional area of 1.5 cm2, have their dipole moments aligned. (a) What is the dipole moment of the bar? (b) What torque must be exerted to hold this magnet perpendicular to an external field of 1.2 T? (The density of iron is 7.9 g/cm3...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT