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swat32
3 years ago
7

To reduce the likelihood of back pain, use a safe ______ technique. Adjust your chair’s lumbar support. Avoid awkward twisting p

ostures, excessive force, quick movements, and repetitive motions.
Advanced Placement (AP)
1 answer:
Daniel [21]3 years ago
6 0
To use the modern technology.

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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

6 0
2 years ago
A student crested a model to show the flow of energy in a terrestrial ecosystem.
Contact [7]

Option A is the answer... Hope it helps

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3 years ago
How do volcanoes affect the land around them Science interactive book
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When volcanoes erupt, they emit a mixture of gases and particles into the air. Some of them, such as ash and sulphur dioxide, have a cooling effect, because they (or the substances they cause) reflect sunlight away from theearth
3 0
3 years ago
How can online school be sooo boring and difficult at the same time?? T^T
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Answer:

New

Explanation:

It is new and no one  prepared for it

May I please have Brainly?

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Identify and explain one economic, political, social, or environmental consequence of the rapid population growth of the past 20
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Answer:

Sorry

Explanation:

잘자, 좋은 꿈 꿔

Normal distribution, also known as the Gaussian distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean. In graph form, normal distribution will appear as a bell curve.

5 0
3 years ago
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