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PolarNik [594]
3 years ago
6

A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium is found to be 31:1,

how many half-lives have occurred?
Physics
1 answer:
iris [78.8K]3 years ago
8 0

Answer:

Explanation:

Argon to potassium ratio after 1 half life = 1:1

After 2 half lives = 75/25= 3:1

After 3 half lives = 87.5/12.5= 7:1

After 4 half lives = 93.75/6.25 = 15:1

After 5 half lives = 96.875/3.125 = 31/1

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Answer:

-48 N

Explanation:

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force exerted by the person = 48 N

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The sensor in the torso of a crash test dummy records the magnitude and direction of the net force acting on the dummy.If the du
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Here in crash test the two forces are acting on the dummy in two different directions

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so we can say

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here given that

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now we will plug in all data in the above equation

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4 0
3 years ago
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The horizontal acceleration of a projectile __
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Answer: C, constant, you’re welcome
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3 years ago
72.0-kg person pushes on a small doorknob with a force of 5.00 N perpendicular to the surface of the door. The doorknob is locat
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Answer:I=2 kg-m^2

Explanation:

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4 0
4 years ago
The Coriolis effect is the result of which of these?
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The coriolis effect was discovered in the 19th century by Gaspard. C. Coriolis. It simply relates to anything that moves freely on the surface of the earth including apparent curvature global winds and ocean currents.
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Answer:
<span>A.) The rotation of Earth on its axis</span>
8 0
3 years ago
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