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1. Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock containing a mixture of U-238 and lead, and determine that 56% of the original U-238 remains: the other 44% has decayed into lead. How old is the rock? (Round to three decimal places as needed)

1. Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock containing a mixture of U-238 and lead, and determine that 56% of the original U-238 remains: the other 44% has decayed into lead. How old is the rock? (Round to three decimal places as needed)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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U-238 1. Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock containing a mixture of and lead, and determine that 56% of the original U-238 remains: the other 44% has decayed into lead. How old is the rock? (Round to three decimal places as needed)
Transcribed Image Text:U-238 1. Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock containing a mixture of and lead, and determine that 56% of the original U-238 remains: the other 44% has decayed into lead. How old is the rock? (Round to three decimal places as needed)
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