The process occurring when photons bounce off a polished surface is called:
A) diffraction.
B) refraction.
C) reflection.
D) dispersion.
E) interference.
C
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Which of the following statements was true beyond the frost line (but not interior to it)?
a. It was so warm that only metal and rock could condense from the gas. b. This was the only region that flattened into a disk. c. No object as small as a terrestrial planet could form. d. It was cold enough for hydrogen compounds to condense into ices
If the mixing of 10 atomic %copper into a silver crystal occurs at T=1000 K (727°C), determine the change in the Gibbs free energy on a per-mole basis if the enthalpy of solution for copper into silver is 0.25 eV/atom. (b) Based upon your result, should it be possible to mix 10 atomic %copper into silver? Explain your answer, and discuss this result in comparison to Example Problem 4.8.
What will be an ideal response?
Why is Io's orbit about Jupiter slightly elliptical?
A) because of tidal forces due to Jupiter B) because Io was captured C) because of orbital resonances with the other three Galilean moons D) because of a giant impact which occurred in the past
What is the potential at a distance of 0.0529 nm from a proton?
A. 13.6 no B. -13.6 no C. 27.2 V D. -27.2 no E. 9.11 pC