Fast
which is one common use of neutron activation analysis?
killing cancerous cells
the transmutation of hydrogen into helium
detecting art forgeries
assessing the function of body organs, such as the thyroid
why does nuclear fusion occur naturally in the sun but not on earth?
a-sion reactions take place only in the vacuum of space.
b-ater on earth’s surface prevents fusion reactions from occurring.
the extreme gravitational forces within the sun trigger fusion reactions.
fusion reactions take place only at very high temperatures.