Mathematics, 25.07.2019 09:30 unknown54321
Atoxic radioactive substance with a density of 9 milligrams per square centimeter is detected in the ventilating ducts of a nuclear processing building that was used 35 years ago. if the half- life of the substance is 20 years, what was the density of the substance when it was deposited 35 years ago?
Answers: 1
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Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32
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Mathematics, 21.06.2019 16:30
Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?
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Mathematics, 22.06.2019 01:10
Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?
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Atoxic radioactive substance with a density of 9 milligrams per square centimeter is detected in the...
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