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V125BC [204]
3 years ago
14

Find the value of d, the length of the diagonal across the square. If necessary,

Mathematics
1 answer:
icang [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Use Pythagorean theorem,

d² = 4² + 4²

   = 16 + 16

d² = 32

d = √32

d = 5.67 units

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The half life of silicone-32 is 710 years. If 30 grams is present now, how much will be present in 300 years?
Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

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where,

N(t) = quantity of the substance remaining

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From the information given we know:

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So, to find the quantity of silicone-32 remaining we apply the above equation

N(t)=30\left(\frac{1}{2}\right)^{\frac{300}{710}}=30\left(\frac{1}{2}\right)^{\frac{30}{71}}\approx22.38 \:g

22.38 g of silicone-32 will be present in 300 years.

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1

Step-by-step explanation:

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Hope that this is helpful.

Have a nice day.

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