What was the most convincing evidence that a natural nuclear reactor formed two billion years ago in a uranium deposit in Africa?
A) the relative depletion of 235U in the deposit
B) the relative depletion of 238U in the deposit
C) the relative abundance of lead in the deposit
D) the isotopic distribution of neodymium in the deposit
E) the appearance of radiation damage in the surrounding rock
Correct Answer:
Verified
Q16: An explosion does not result from a
Q17: The binding energy per nucleon:
A)increases for all
Q18: The approximate amount of energy emitted in
Q19: 235U is readily made fissionable by a
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