Shabands2088 Shabands2088

09-09-2022
Physics

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If+a+1.60+cm+thick+piece+of+lead+can+absorb+90.0%+of+the++rays+from+a+radioactive+source,+how+many+centimeters+of+lead+are+needed+to+absorb+all+but+0.080%+of+the+'s?

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