fatimayousufzai6 fatimayousufzai6
  • 14-04-2024
  • Physics
contestada

the no of atoms per gram of ra is 2.666 exponent 21 and it decays with half life of 1622 years find activity and decay constant

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roscanatalia1981 roscanatalia1981
  • 14-04-2024
Asa chic chic dupa faci asa anii ii imparti la ne care iti trb si dupa te duci la nani
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