An electric generator transforms
A)
chemical energy into electrical energy.
B)
electrical energy into mechanical energy.
C)
mechanical energy into electrical energy.
D)
direct current into alternating current.
E)
alternating current into direct current.
C
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The saturation magnetization of nickel measured at room temperature is 5.1×105 A/m.
(a) Calculate the average number of Bohr magnetons on a nickel atom, knowing that nickel has an FCC structure with an atom at 0,0,0. At room temperature the lattice parameter is 0.352 nm. (b) Compare your answer to part (a) with the theoretical number of Bohr magnetons based upon the atomic electron structure of nickel, and explain any possible difference.
A wire contains a steady current of 2 A. The number of electrons that pass a cross section in 2 s is:
A) 2 B) 4 C) 6.3 × 1018 D) 1.3 × 1019 E) 2.5 × 1019
For an orbital quantum number of 2, the magnetic quantum number can take on what allowed values?
What will be an ideal response?
Meteoric material dates the formation of the solar system at about ________ billion years
A) 1.5 B) 2.0 C) 2.5 D) 4.6 E) 10