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questions concerning measurements, experiments, and activities that demonstrate physics and are safe to do at home, require at most one tool or ingredient not readily available, and can be interpreted or analyzed on one sheet of paper with accessible math.
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Radioactive objects in a student's room [closed]
Contrary to common believe, radioactive materials are everywhere, including inside our bodies, our food, the air we breathe and so on.
From Wiki (emphasis mine):
The decay of a 14C atom inside …