The tail of a comet is shortest when the comet is
a. closest to the Sun.
b. farthest from the Sun.
c. closest to Earth.
d. farthest from Earth.
b
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One of the most serious 3-D defects that affects the strength of ceramics is the presence of _____________.
Fill in the blank(s) with the appropriate word(s).
The combining of two nuclei to form a larger nucleus with the release of energy is
a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. beta decay.
If an electron is accelerated from rest through a potential difference of 100 V, what is its de Broglie wavelength?
A. 
B. 
C. 
D. 
E. 
The five principles used to determine the relative ages of rock include original
A) horizontality, superposition, cross cutting, inclusion, and faunal succession. B) horizontality, nonconformity, cross cutting, inclusion, and faunal succession. C) inclusion, superposition, uniformitarianism, horizontality, and fossil succession. D) horizontality, uniformitariansism, cross cutting, stromatolite, and faunal succession.