Constants Stefan-Boltzmann Constant, o = 5.67 x 10-8 wm-2 K-4 Conversion Formula To convert from Celsius to K: T(K) = TIC) + 273.15 . 1 HCI (microcurie)= 37000 Bq . 1 Bq = 1 decays/s . 1 Gy = 0 000001 Ci . 1 J/kg = 1 HCi (microcurie) . 1 6E-13 J = 1 MeV Scientific Notation If an item requires that you type your inputs in scientific notation, follow these instructions: . The coefficient must be written using this pattern: XXXXE(XX) For example, the number 1.234 x 10-15 must be written as 1.234E-16.Polonium-210 (Po-210) is a rare radioactive metal discovered by Marie Curie in the late 19th century. While radioactive, it emits a high-energy form of radiation, but the particles do not travel far and it decays relatively quickly with a half-life of 138 days. If Po-210 enters the body, through inhalation, swallowing or broken skin, the results can be fatal. Po-210 is one of the deadliest toxins by mass, and can be fatal in very small amounts. If Po-210 is absorbed into the body it can be many times more toxic than cyanide The alpha radiation can rapidly destroy major organs, DNA and the immune system Po-210 has a very high specific activity of 4,490 Ci/g It was suspected that a person ingested about 2.5 micrograms (ug) of radioactive Po-210 Assume that the mass of the affected tissues in the person's digestive system is 1.75 kg. Polonium-210 decays by emission of a 5.3-MeV alpha (o) particle with an RBE value of 20 . What is the corresponding radioactive activity (in microcuries) of the physical amount of Po-210? . What is the corresponding number of decays per second of the physical amount of Po-210? Use scientific notation . How many decays are expected in 30 days? Use scientific notation. . What is the ionizing energy (J) deposited in 30 days? . What is the radiation dose (Gy) in 30 days? . What is the radiation dose (SV) in 30 days