The heating of a ferromagnet in an alternating magnetic field is due to
(a) Induced free electron current loops.
(b) Alterations of atomic electron orbitals.
(c) Switching of electron spin orientations.
(d) Friction created by Bloch wall motion.
(a) Induced free electron current loops.
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One of Neptune's moons produces _______________ in the outermost ring
Fill in the blank(s) with correct word
The terrestrial planets have mantles of ________ materials and iron rich cores
Fill in the blank(s) with correct word
The outward pressure in the core of a red giant balances the inward pull of gravity when
A) hydrogen begins fusing into helium. B) carbon fuses into heavier elements. C) the electron orbits are compressed so much they are all in contact. D) the electrons and protons have combined to form neutrons. E) iron forms in the inner core.
A baseball has a mass of 0.15 kg. If pitched at 40.0 m/s with a relative uncertainty of 1%, how uncertain is its position?
A. 9.1 x 10-34m B. 5.7 x 10-34m C. 1.8 x 10-34m D. 6.3 x 10-33m