Fission and fusion reactions have in common _______
a. absorption of energy in the nuclear reaction
b. high temperature requirements
c. liberation of neutrons
d. loss of mass of products over reactants
e. gain in mass of products over reactants.
d
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The cosmic microwave background radiation was emitted during a time when ____ was the important process in the Universe
a. recombination b. ionization c. fusion d. antiproton production e. positron production
A 12.0 V battery is placed across a 4.00
resistor. If the current through the resistor is 2.80 A, what is the terminal voltage of the battery?
A. 12.0 V B. 12.8 V C. 11.6 V D. 11.2 V E. 9.6 V
A key component of one type of spectroscope for visible radiation is the
A) filter for separating the different gases. B) magnet for bending the radiation beam. C) electrostatic plate for bending and separating the radiation beam. D) prism for separating the radiation beam. E) mirror for separating the radiation beam.
Our molten core is believed to consist primarily of the element ________
Fill in the blank(s) with correct word