Why does neutron capture work?
A) Neutrons have no repulsive barrier to overcome in combining with positively charged nuclei.
B) Neutrinos, because of their low mass and high speed, easily penetrate nuclei.
C) Single protons have little repulsion to heavy nuclei and easily fuse with them.
D) Photodisintegration makes many alpha particles, available for capture by nuclei.
E) Neutronization captures all the protons and electrons.
A
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What part of a comet has only been seen by a space probe?
A) meteoroid trail B) dust tail C) ion tail D) coma E) nucleus
Melting snow tends to
A) warm the surrounding air. B) cool the surrounding air. C) neither of these
A refrigerator is an example of a heat mover
Indicate whether the statement is true or false