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steposvetlana [31]
3 years ago
9

What is an example of a wave that is not mechanical and how is it different?

Physics
1 answer:
vovikov84 [41]3 years ago
5 0

Answer:

light is an example of a wave that is not mechanical .

it is different as it does not need material medium for its propagation

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If you have 10.0 g of a substance that decays with a half-life of 14 days, then how much will you have after 42 days?
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The formula for the mass that remains:
m=m_0 \times (\frac{1}{2})^\frac{t}{T}
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m_0=10 \ g \\
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t=42 \ d \\ \\
m=10 \times (\frac{1}{2})^\frac{42}{14}=10 \times (\frac{1}{2})^3=10 \times \frac{1}{8}=10 \times 0.125=1.25

The answer is c. 1.25 g.
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