Which is NOT a reason that silicon is unsuitable as a building block for life compared to carbon?
A) silicon—silicon bonds are much weaker than carbon—carbon bonds
B) silicon does not form multiple bonds with itself, limiting the complexity of molecules it can form
C) silicon does not bond with many other elements
D) silicon dioxide is a high melting point solid and, hence, cannot be used to transfer silicon atoms like gaseous carbon dioxide can be used to transport carbon atoms
C
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Einstein's mass-energy equivalence () is important to the first phases of the big bang in explaining how____
a. gamma ray photons create matter and antimatter b. stable protons and neutrons can exist below a certain temperature c. antimatter can exist d. matter became more prevalent than antimatter e. the Universe expanded rapidly
The advantage of a fusion reactor when compared to a fission reactor is which of the following?
a. The fuel is cheaper. b. There is less radioactive waste material. c. Both choices above are valid. d. None of the above choices are valid.
If the natural log of the viscosity is plotted as a function of the inverse of the absolute temperature, the slope of the line is equal to the _________of activation for plastic strain divided by Boltzmann’s constant.
Fill in the blank(s) with the appropriate word(s).
Exhibit 12-3
The graph below shows a plot of angular velocity in rad/s versus time in s from t = 0 s to t = 7 s.
?
?
Use this exhibit to answer the following question(s).
Refer to . The angular position, ?, at t = 0 s is 3.0 rad, clockwise. The angular position, ?, at t = 7 s is
a.
27 rad, CW.
b.
27 rad, CCW.
c.
33 rad, CW.
d.
33 rad, CCW.
e.
36 rad, CCW.