One eighth would be left.
Approx 1/8 will remain.
2/13 cannot be written as an improper fraction since [the absolute value of] its numerator is less than [the absolute value of] its denominator. It will remain a proper fraction.
The numerator of the improper fraction will be 2*8 + 3 = 19 and the denominator will remain the same as that for the fractional part of the mixed fraction. So the improper fraction is 19/8.
No. Remember that when you multiply the top (numerator) and the bottom (denominator) of a fraction by the same number, the value of the fraction will remain the same. So, if we take your fraction, 3/4, and multiply the top and bottom by two (we are really multiplying by 2/2, which equals 1), we get 6/8. Simple examination now tells you that 7/8 is greater than 6/8. This method is called "finding a common denominator", and is very useful.
500 can't be rounded up or down and must remain as 500.
There will be 1/8 remaining.
Approx 1/8 will remain.
Radioactive materials decay over time, emitting radiation in the form of alpha, beta, or gamma particles. As the material decays, it transforms into isotopes of other elements until it reaches a stable state. The rate of decay is measured by the material's half-life, which determines how long it takes for half of the radioactive sample to decay.
The remainder is 2-p or 0.5p of the original amount.
Only 1/32 of the original radioactive material will remain. (½)5 = 1/32
The type of radiations remain the same during time for a specific isotope.
No, the radioactive property of the metal element will not transfer to the ionic compound formed with the non-metal element. Radioactivity is a property of the atomic nucleus, and when elements combine to form compounds, their electronic configurations determine their chemical properties, not their nuclear properties.
Ionizing radiation lasts for as long as the radioactive material emitting it remains radioactive. The duration can vary depending on the half-life of the specific radioactive isotope involved. Some isotopes may last seconds to minutes, while others can remain radioactive for thousands of years.
All radioactivity decays with time. Some fission products from uranium fission will remain active for thousands of years, others decay to insignificance within a few years.
After three half-lives, 12.5% of the original radioactive material will remain. Each half-life reduces the amount of material by half, so after three half-lives the remaining material will be 0.5^3 = 0.125 or 12.5%.
The halflife of a particular isotope simply tells how long it will remain dangerously radioactive. By storing the spent fuel rods on site much of the shorter lived more intense radiation will have decayed before moving it to a long term repository.
The property of half-lives that makes radioactive material problematic is that they can remain dangerous for long periods of time. This means that even after a substantial amount of time has passed, the material can still emit radiation and pose a threat to human health and the environment.