To determine the wear of an automobile engine, asteel compression ring is placed in a
Chapter 13, Problem 46(choose chapter or problem)
To determine the wear of an automobile engine, asteel compression ring is placed in a nuclear reactor,where it becomes neutron activated because of theformation of 59Fe(t1/2 44.5 days, ). The activity ofthe ring when placed in the engine is 4.0 105 Bq.Over the next 60 days, the car is driven 100,000 km ona test track. The engine oil is extracted, and the activityrate of the oil is measured to be 512 /min. Whatfraction of the ring was worn off during the test?
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