On the average, in a ferromagnetic domain permanent atomic magnetic moments are aligned ____ to one another
a. antiparallel
b. parallel
c. perpendicular
d. alternately parallel and antiparallel
e. randomly relative
b
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Which of the following is a property of light waves and NOT of sound waves?
A) frequency B) wavelength C) amplitude D) polarization E) none of the above
How many oxygen molecules are needed to make 10 carbon dioxide molecules according to the following balanced chemical equation?
2 CO + O2 ? 2 CO2 A) 5 B) 1 C) 4 D) 10 E) 2
O-type stars in our galaxy are
A) very common, making up about 50% of the total B) fairly common (several percent) C) very rare (less than 1%) D) the most common type of stars in our galaxy (75% or more)
The ______________ of a surface position on Earth can be defined as the angular measurement, in degrees, north or south of the equator
Fill in the blank(s) with correct word