Mathematics, 17.04.2020 20:23 smm1106
Radium-226 is a radioactive element, and its decay rate is modeled by the equation R = R0e-0.000428t. How many years will it take for 100 grams of radium-226 to reduce to half its mass?
A.
810
B.
1,620
C.
2,690
D.
5,380
Answers: 1
Mathematics, 22.06.2019 00:20, tiffany1711
Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?
Answers: 2
Mathematics, 22.06.2019 05:30, carafaith02
What is the area of parallelogram rstu? 21 square units 24 square units 28 square units 32 square units
Answers: 2
Radium-226 is a radioactive element, and its decay rate is modeled by the equation R = R0e-0.000428t...
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