Nuclear Physics (Grade 10)
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What is the half-life of a radioisotope if 50.0 grams of an original 200.-gram sample of the isotope remains unchanged 15.60 years?
- 7.80 years
- 15.60 years
- 23.40 years
- 3.90 years
How many years have passed if 25 grams of an original 100.0-gram sample of Sr-90 remains unchanged?
- 58.2 years
- 87.3 years
- 29.1 years
- 116.4 years
Polonium-210 has a half-life of 138 days. Determine the total mass of an original 300-gram sample of Po-210 that remains unchanged after 690 days.
Carbon-14 has a half-life of 5715 years. A dead tree sample contains 1/16 as much C-14 as is present in a living tree sample. How old is the dead tree?
Which nuclear emission only involves the release of energy?
Which nuclear emission involves the release of electrons, only?
Which nuclear emission involves the release of helium nuclei?
Which of the following nuclear emissions has the greatest penetrating power?
Which of the following nuclear emissions involves the release of a particle with no mass and a charge of +1?
The process by which a nucleus spontaneously undergoes a change from a state with less binding energy to a state with more binding energy is called
- nuclear fusion.
- nuclear fission.
- radioactive decay.