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Alenkasestr [34]
3 years ago
12

What is the half-life of an isotope that decays to 25% of its original activity in 70.8 hours?

Physics
1 answer:
loris [4]3 years ago
8 0
Are there any options?
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The rate (in liters per minute) at which water drains from a tank is recorded at half-minute intervals. Use the average of the l
lana [24]

Answer:

see explanation

Explanation:

You are missing the chart with the rates and time to do this, however, I wll do it with a similar exercise here, and you only need to replace the procedure with your data:

See the attached table.

From the left we have:

r = 1/2 (50 + 48 + 46 + 44 + 42 + 40) = 135 L/min

From the right we have:

r = 1/2 (48 + 46 +44 + 42 + 40 + 38) = 129 L/min.

And this should be the correct answer. Watch your chart and replace if it's neccesary.

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I think the answer is A I’m
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A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Does this statement describ
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this statement describes meteor's velocity,

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3 years ago
Is the moon blue????????
Zolol [24]
No, according to many pictures taken in space, the moon is white. However, on rare occasions, the moon appears blue.

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