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Amiraneli [1.4K]
2 years ago
13

Helium decays to form lithium. 6 2 he → 6 3 li 0 -1 e this type of nuclear decay is called .

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
8 0

To understand this question, we need some knowledge on radioactive decay. This type of nuclear decay is called a beta decay

<h3>Beta Decay</h3>

This is the process where a radioactive material is fired or naturally emits a beta particle which is equivalent to the lose of an electron and spontaneously becomes an entirely different element.

^6_2He \to ^6_3 Li + ^0_-_1e

The participating actors in this nuclear reaction are

  • helium
  • lithium
  • electron

This is the decay process of helium particle in which it became a lithium particle and emitted an electron in the process.

Learn more on beta decay here;

brainly.com/question/9615302

#SPJ4

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420 seconds

Step-by-step explanation:

(60 seconds in a minute, 60 x 7 = 420)

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Answer:

$1456.25

Step-by-step explanation:

Given data

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3 years ago
A scientist inoculates​ mice, one at a​ time, with a disease germ until he finds 3 that have contracted the disease. If the prob
UkoKoshka [18]

Answer:

The probability that 8 mice are​ required is 0.2428.

Step-by-step explanation:

Given : A scientist inoculates​ mice, one at a​ time, with a disease germ until he finds 3 that have contracted the disease. If the probability of contracting the disease is two sevenths.

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P(X=r)=^nC_r p^rq^{n-r}

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P(X=3)=^8C_3 (\frac{2}{7})^3 (\frac{5}{7})^{8-3}

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P(X=3)=\frac{8\times 7\times 6}{3\times 2\times 1}\times \frac{8}{343}\times \frac{3125}{16807}

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Therefore, the probability that 8 mice are​ required is 0.2428.

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