if you are exposed to all sources of radiation from natural sources and human activities (worldwide average). How many years would it take for you to absorb a fatal dose of radiation plss help
To estimate the time it would take for an individual to absorb a fatal dose of radiation from all sources (natural and human activities), we need to consider the average radiation dose received and the dose required to be fatal.
The unit used to measure radiation is the Sievert (Sv). The LD50/30 is the lethal dose at which 50% of individuals would die within 30 days. For humans, the LD50/30 is approximately 3-4 Sv.
First, let's determine the average annual radiation dose received from natural sources and human activities. On average, a person receives around 2.4 millisieverts (mSv) of radiation per year from natural sources, which include cosmic radiation, radon gas, and naturally occurring radioisotopes. From human activities, one may receive additional radiation from sources like medical procedures, nuclear power plants, and consumer products. Let's assume an additional average annual dose of 0.6 mSv from human activities, totaling 3 mSv per year overall (considering both natural and human sources).
To calculate the time required to absorb a fatal dose, we divide the lethal dose (3-4 Sv) by the average annual dose (3 mSv):
Time = (Lethal Dose) / (Average Annual Dose)
Taking 3 Sv as the lethal dose:
Time = 3 Sv / 0.003 Sv/year
Time ≈ 1000 years
Therefore, if you were exposed to the worldwide average radiation dose from natural sources and human activities, it would take approximately 1000 years to absorb a fatal dose of radiation. It's important to note that this is a rough estimate, as radiation doses can vary significantly based on factors such as geographical location, lifestyle, occupation, and exposure to specific sources.