• anonymous
Which of the following might be considered a viable application of a radioactive tracer? It can be more then one? A) adding a stream of radioisotopes to waste water to examine where pollution goes when it flows into the ocean B) embedding a radioactive plug in a valuable necklace so that its location can be determined using a Geiger counter C) placing radioactive sources around a room to trace the location of people as they move through the room d.) filling a pipeline with radioactive gas to see if it contains any leaks
  • Stacey Warren - Expert
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  • chestercat
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  • aaronq
You can't use radioactivity as a positioning system in a large coordinate system - i.e. B) C) A) could work, but it might be unsafe D) is a good choice i guess, though now they can use (less toxic) fluorescent labels instead

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