Is it at all possible for a hydrogen nucleus to emit an alpha particle?
A. no, because it does not contain enough nucleons
B. yes, because alpha particles are the simplest form of radiation
C. no, because it would require the nuclear fission of hydrogen, which is impossible
D. yes, but it does not occur very frequently
Answer: A
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A person born in Nigeria is expected to live a certain number of years based on current mortality levels in that country. This is referred to as:
A) life expectancy at birth B) crude birth rate C) mortality rate D) fertility rate E) none of the answer choices are correct.
Archean and Proterozoic greenstone belts formed in similar tectonic settings
Indicate whether the statement is true or false
In low-lying desert regions, rapid evaporation of surface water leading to a high concentration of soluble salts in the soil is called ______________
Fill in the blank(s) with correct word
n regions with low rates of precipitation and high rates of evaporation, the halocline will __________.
-decrease in salinity with depth -not exist -increase in salinity with depth -increase in density with depth