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Sebuah laboratorium memiliki  murni, yang memiliki waktu paro 10 menit (600 s). Berapa banyak aktivitas radiasi semula?

Pertanyaan

Sebuah laboratorium memiliki begin mathsize 14px style 1 comma 43 space text μg  end text N presubscript 7 presuperscript 13 end style murni, yang memiliki waktu paro 10 menit (600 s). Berapa banyak aktivitas radiasi semula?   

Pembahasan Soal:

Konstanta laju peluruhan:

begin mathsize 14px style lambda equals fraction numerator 0 comma 693 over denominator T end fraction equals fraction numerator 0 comma 693 over denominator 600 end fraction equals 0 comma 1155 cross times 10 to the power of negative 2 end exponent equals 1 comma 155 cross times 10 to the power of negative 3 end exponent end style

Laju Peluruhan:

begin mathsize 14px style N equals n cross times N subscript A space space space equals m over m subscript r cross times 6 comma 02 cross times 10 to the power of 23 space space space equals fraction numerator 1 comma 43 cross times 10 to the power of negative 6 end exponent over denominator 13 end fraction cross times 6 comma 02 cross times 10 to the power of 23 space space space equals 0 comma 11 cross times 10 to the power of negative 6 end exponent cross times 6 comma 02 cross times 10 to the power of 23 space space space equals 0 comma 6622 cross times 10 to the power of 17 space space space equals 6 comma 622 cross times 10 to the power of 16 end style

begin mathsize 14px style R equals lambda space N space space space equals 1 comma 155 cross times 10 to the power of negative 3 end exponent cross times 6 comma 622 cross times 10 to the power of 16 space space space equals 7 comma 6 cross times 10 to the power of 13 end style  space

 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 01 April 2021

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