The Half-Life of Cobalt-60 Is 5

question 83

Multiple Choice

The half-life of cobalt-60 is 5.3 years,while that of strontium-90 is 28 years.Suppose that samples of cobalt-60 and strontium-90 are such that they initially have the same activity (number of decays per second) .What is true about the initial numbers of cobalt-60 and strontium-90 nuclei in these samples?

• A) There are more strontium-90 than cobalt-60 nuclei.
• B) There are equal numbers of cobalt-60 and strontium-90 nuclei.
• C) There are more cobalt-60 than strontium-90 nuclei.
• D) It is not possible to compare numbers of nuclei without knowing the masses of the samples.

Appreciate the value of diverse connections and inclusivity in forming strong professional networks.

Understand the characteristics, formation, and dynamics of effective founding teams, including the balance between homogeneous and heterogeneous teams.

Grasp the relevance of conflict, its management within teams, and the role of devil’s advocates in fostering healthy debates for better decision-making.

Recognize the significance of aligning team goals and values for startup success.

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