Radioactive isotopes are often introduced into the body through the bloodstream. their spread through the body can then be monitored by detecting the appearance of radiation in different organs. 1311, a b- emitter with a half-life of 8.0 days is one such tracer. suppose a scientist introduces a sample with an activity of 375 bq and watches it spread to the organs. assuming that the sample all went to the thyroid gland, what will be the decay rate (activity) in that gland 24 days later? if the subject's thyroid has a mass of 20 grams, and each b- is of energy 5 kev, what is the total dose of radiation the thyroid receives?

power out to power in less than 100%

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

small = small current large mag large current

dang that balls went far