The critical mass of pure 235 92 U can be as small as about 15 kg, but a much smaller amount has a significant activity (a) What is the activity of a sample of 235 92 U with a mass of 1 0 mg (b) A Geiger counter with a detector area of 5 0 cm2 is placed 20 cm from the 235 92 U sample in part (a) Ho...

This problem is similar to Example 305 The initial activity of a ...

The critical mass of pure 235 92 U can be as small as about 15 kg, but

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The critical mass of pure ²³⁵₉₂U can be as small as about 15 kg, but a much smaller amount has a significant activity.

(a) What is the activity of a sample of ²³⁵₉₂U with a mass of 1.0 mg?

(b) A Geiger counter with a detector area of 5.0 cm2 is placed 20 cm from the ²³⁵₉₂U sample in part (a). How many decays will the Geiger counter measure?

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College Physics Reasoning and Relationships

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The critical mass of pure 235 92 U can be as small as about 15 kg, but

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College Physics Reasoning and Relationships

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