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রেডিয়ামের অর্ধায়ু 1600 বছর। 6400 বছর পরে প্রাথমিক পরিমাণের কত অংশ অক্ষত থাকবে?

Created: 1 year ago | Updated: 1 year ago

Updated: 1 year ago

\frac{1}{4}

\frac{1}{8}

\frac{1}{16}

\frac{1}{32}

Explanation

452

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\vec{A} . \vec{B}

\vec{C}

20 Ω

1.6 \times 10^{- 19} C

9.11 \times 10^{- 31} k g

S = \frac{1}{3} t^{3} + 3 t

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