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Maurinko [17]
2 years ago
11

A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample

remains?
Physics
1 answer:
Radda [10]2 years ago
5 0

Answer:

432 60 27 4.14 10 9 1=15000

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Answer:

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A 40-W lightbulb is 1.7 m from a screen. What is the intensity of light incident on the screen? Assume that a lightbulb emits ra
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Answer:

Intensity, I=1.101\ W/m^2

Explanation:

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I=\dfrac{P}{A}

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So, the intensity of light is 1.101\ W/m^2.

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Misha Larkins [42]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
a. <span>FM GmMmr2
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b. </span><span>FE GmEmr2
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