Nuclear Energy; Effects and Uses of Radiation (id: 654b94bd3)

本题目来源于试卷: Nuclear Energy; Effects and Uses of Radiation，类别为 IB物理学

[填空题]
An average adult bod3u6axs: adsbhmatwvh8 -j ; kp f04*l2y cbhd06/ 4e zrzfsj*ze9ontains about $0.10\ \mu\text{Ci}$ of $_{19}^{40}\text{K}$, which comes from food.
(a) How many decays occur per second?    $\ \text{decays/s}$
(b) The potassium decays produce beta particles with energies of around 1.4 MeV. Calculate the dose per year in sieverts for a 50-kg adult.    $\times 10^{-4}\ \text{Sv/y}$
Is this a significant fraction of the $3.6\ \text{mSv/year}$ background rate?    %

参考答案:
空格1: 3700±2%  空格2: 5.23 ±2%  空格3: 15±2% 


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