- Cobalt 60 has a half life of 5 years. how many grams of a 300 g sample will remain after 20 years?

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Generate 500 random numbers, interval 1 to 65536. Determine fraction of these numbers, greater than or equal to 512, lessthan or equalto2048? I need to replace the couple in the image with an equivalent. If magnitude of new couple is 80 #, perpendicular lines between lines is? I was wondering why birds mostly disregard eating sycamore seeds, crab apples from types of crab apple trees and the dreaded ticks.? Whose terminal side intersects the unit circle at (-15/17,-8/17). Find the exact values of sinθ, cotθ, and csc θ? How is friction involved in the decreasing of mechanical energy?