Carbon Dating Determines the Approximate Age of an Object Made $A = - \frac { \ln P } { 0.000121 }$

question 28

Multiple Choice

Carbon dating determines the approximate age of an object made from materials that wereonce alive by measuring the remaining percentage of a radioactive isotope, carbon-14. The age is calculated Using the formula $A = - \frac { \ln P } { 0.000121 }$ where P is the percentage of remaining carbon-14 (in decimal form) . A specimen is determined to Be 3800 years old. What is the percentage of remaining carbon-14? Round to the nearest tenth of a Percent.

• A) 23.1%
• B) 43.1%
• C) 76.1%
• D) 63.1%

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