How many centimeters are there in one kilometer?
a. 100
b. 1,000
c. 10,000
d. 100,000
e. 1×10^6
d
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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.
The rotation of Uranus is peculiar in that
a. it is very slow, nearly zero. b. it is much faster than is typical for Jovian planets. c. it first turns in one direction, then stops and turns in the opposite direction. d. the axis is nearly parallel to the plane of its orbit.
Two thin slits are 6.00 ?m apart. Monochromatic coherent light falls on these slits, and produces a fifth-order bright interference fringe at an angle of 32.3° away from the centerline. What is the wavelength of the light?
A) 164 nm B) 416 nm C) 614 nm D) 641 nm
Light bends when it
A) passes a massive star. B) passes through a gravitational field. C) both of these D) neither of these