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Delicious77 [7]
3 years ago
12

Suppose that the amount of air in a balloon after t hours is given by V(t) = t3 − 5t2 + 30

Advanced Placement (AP)
1 answer:
Levart [38]3 years ago
5 0
It’s b you better pick b because it’s b
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Question 10 of 10
kari74 [83]

Answer: the answer is D

Explanation:

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Assume that a 100 cm3 soil core weighs 78g when oven-dried and 123 g when saturated. Calculate the total pore space and total po
stiks02 [169]

To calculate the total pore space, we will find the difference between the mass of the soil when it is oven - dried and when it is saturated. Therefore, the value of the total pore space and total porosity are 45g and 45% respectively

Given that a 100 cm3 soil core weighs 78g when oven-dried and 123 g when saturated.

The given parameters are;

Volume of soil V = 100cm^{3}

Mass ( Oven dried) M_{1} = 78g

Mass ( Saturated) M_{2} = 123g

In the soil formation, pore space refers to the volume of soil. And to calculate the total pore space, we will find the difference between the mass of the soil when it is oven - dried and when it is saturated. That is,

Total pore space =  M_{2} - M_{1}

Total pore space = 123 - 78

Total pore space = 45g

And total porosity will be the percentage of the ratio of total pore space to the given volume of the soil. That is,

Total porosity = (Total pore space / volume of the soil) x 100

Total porosity = 45/100 x 100

Total porosity = 0.45 x 100

Total porosity = 45%

Therefore, the value of the total pore space and total porosity are 45g and 45% respectively

Learn more here: brainly.com/question/21343105

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2 years ago
Antonym Circle the antonyms in each sentence. Then write what each antonym means.
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