Beta-particle
Q. How long will it take for 10% of a 1000 gram sample of uranium 235 to decay?
How long will it take for ten percent of a 1000-gram sample of uranium-235 to decay? Ten percent of 1000 grams is 100 grams….Solving Applied Problems Using Exponential and Logarithmic Equations.
Table of Contents
- Q. How long will it take for 10% of a 1000 gram sample of uranium 235 to decay?
- Q. What element decays the fastest?
- Q. Which radioisotope is best for determining the actual age of the Earth?
- Q. Which radioisotope emits alpha particle?
- Q. How much radiation do you get from the sun?
- Q. Is radiation from the sun dangerous?
- Q. Why is space bad?
| Substance | Use | Half-life |
|---|---|---|
| carbon-14 | archeological dating | 5,715 years |
Q. What element decays the fastest?
Bismuth-209
| General | |
|---|---|
| Natural abundance | 100% |
| Half-life | 2.01×1019 years |
| Parent isotopes | 209Pb (β−) 209Po (β+) 213At (α) |
| Decay products | 205Tl |
Q. Which radioisotope is best for determining the actual age of the Earth?
Wait another 4.468 billion years and only about 250,000 atoms of uranium will remain (Fig. 8). The best-known radiometric dating method involves the isotope carbon-14, with a half life of 5,730 years. Every living organism takes in carbon during its lifetime.
Q. Which radioisotope emits alpha particle?
radioisotope thermoelectric generators use alpha particle decay from plutonium-238 to generate heat which is converted to electricity, commonly used in space probes. some alpha emitters are being investigated for their potential use in unsealed source radiotherapy to treat cancer.
Q. How much radiation do you get from the sun?
Sources indicate an “Average over the entire earth” of “164 watts per square meter over a 24-hour day”. The ultraviolet radiation in sunlight has both positive and negative health effects, as it is both a requisite for vitamin D3 synthesis and a mutagen.
Q. Is radiation from the sun dangerous?
Radiation Facts Too much ultraviolet radiation (UV) from sunlight is dangerous. Nearly half of UV radiation is received between 10 a.m. and 4 p.m., when the sun’s rays are the strongest. Even on a cloudy day, you can be sunburned by UV radiation.
Q. Why is space bad?
The environment of space is lethal without appropriate protection: the greatest threat in the vacuum of space derives from the lack of oxygen and pressure, although temperature and radiation also pose risks. The effects of space exposure can result in ebullism, hypoxia, hypocapnia, and decompression sickness.
