The decay of uranium-238 to lead-206 is also used to estimate the age of objects. Specifically, 206Pb-to-238U ratios allow dating of rocks. Why is the 238U decay to 206Pb useful for dating rocks but useless for daring objects 10,000 years old or younger? Similarly, why is carbon-14 dating useful for dating objects 10,000 years old or younger but useless for dating rocks?
Answer to relevant QuestionsAt a flea market you’ve found a very interesting painting done in the style of Rembrandt’s “Dark Period”. You suspect that you really do nor have a genuine Rembrandt, so you take it to the local university for ...The mass ratios of 40Ar to 40K can also be used to date geological materials. Potassium-40 decays by two processes: a. Why are 40Ar/40K ratios rather than 40Ca/40K ratios used to date materials? b. What assumptions must be ...The binding energy per nucleon for magnesium-27 is 1.326 X 10-12 J/nucleon. Calculate the atomic mass of magnesium-27. During the research that led to production of the two atomic bombs used against Japan in World War II, differ ent mechanisms for obtaining a supercritical mass of fissionable material were investigated. In one type of bomb, ...Using the kinetic molecular theory, calculate the root mean square velocity and the average kinetic energy of 21H nuclei at a temperature of 4 X 107 K.
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