The transmission of sensible heat through matter by transfer of energy from one atom or molecule in the direction of decreasing temperature is:
What will be an ideal response?
conduction
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Determine the magnitude of the Burger’s vector in MgO, shown in Figure 3.10, that has the NaCl crystal structure with a lattice parameter of 0.4212 nm, and compare the magnitude of this Burger’s vector to that of copper. Note that the Burger’s vector is in the [110] direction in MgO.
What will be an ideal response?
Evidence for the drifting of continents or plate tectonics on Earth is
a. the manner in which the outlines of continents fit together much like puzzle pieces. b. the similarity of rocks found occurring along certain continental coastal areas. c. the long, continuous ridges found in the middle of the Atlantic Ocean. d. all of the other choices.
For an ohmic conductor, current is
a. inversely proportional to voltage. b. inversely proportional to resistance. c. independent of resistance. d. independent of voltage.
An electron is bound in an infinite well (a box) of width 0.10 nm
If the electron is initially in the n = 8 state and falls to the n = 7 state, find the wavelength of the emitted photon. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg)