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sergey [27]
3 years ago
10

B. A bird in air looks a fish vertically below it inside the water from a distance 5m from surface of water and fish lies at dep

th 4m from the surface of water. IF Mw= 4/3, what is the distance of fish as observed by bird?
​
Physics
1 answer:
LenKa [72]3 years ago
8 0

Answer:

the distance of the fish (as  seen by the bird) is greater than the actual distance.

Reason-

it is due to the apparent depth and differences between the refractive indices.

Have a nice day!

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Plutonium-239 is a radioactive isotope commonly used as fuel in nuclear reactors. The half-life of plutonium-239 is 24,100 year
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Answer:

72,300 years.

Explanation:

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What's the ratio between the current and the initial mass of this sample? In other words, what fraction of the initial sample hasn't yet decayed?

\displaystyle \frac{\text{Current Mass}}{\text{Initial Mass}} = \rm \frac{63\; g}{504\; g} = \frac{1}{8}.

The value of this fraction starts at 1 decreases to 1/2 of its initial value after every half-life. How many times shall 1/2 be multiplied to 1 before reaching 1/8? 2^{3} = 8. It takes three half-lives or 3\times 24100 = 72300 years to reach that value.

In certain questions the denominator of the fraction is large. It might not even be an integer power of 2. The base-x logarithm function on calculators could help. Evaluate

\displaystyle \log_{\frac{1}{2}}{\frac{1}{8}} = 3 to find the number of half-lives required. In case the base-x logarithm function isn't available, but the natural logarithm function \ln() is, apply the following expression (derived from the base-changing formula) to get the same result:

\displaystyle \frac{\displaystyle\ln{\left(\frac{1}{8}\right)}}{\displaystyle \ln{\left(\frac{1}{2}\right)}}.

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What would be an ideal scenario for using edge computing solutions.
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LDL, or low density lipoprotein, is considered the bad cholesterol. Group of answer choices True False
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Answer: 0.446\ D\ \text{to}\ 1.298\ D

Explanation:

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Power corresponding to 224 cm

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Therefore, the range of the power is 0.446\ D\ \text{to}\ 1.298\ D

7 0
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B

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