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3 years ago

What is the nature of the most common type of foundation failure? what are its causes?

Biology

2 answers:

arlik [135]3 years ago

7 0

Natural common disorder function seeds

SCORPION-xisa [38]3 years ago

5 0

most foundation are due to excessive differential settlement - most commonly

when a bidg. occupies a site with 2 or more areas of different type of soil with every diff. load bearing capacities. gross failure of a foundation is extremely rare.

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As part of an experiment on circadian rhythms, a laboratory rat’s brain has been lesioned. The animal is now falling asleep and

Sergio039 [100]

Answer:the part of the brain that has most likely been damaged in this experiment is the suprachiasmatic nucleus (SCN) found in the hypothalamus of the brain.

Explanation:

circadian rhythms are behavioural changes that respond to light and darkness in an organisms environment. The sleep-inducing wake cycle is a good example of a circadian rhythm. In the experiment, the disruption of the mouse SCN led to development of imbalances in the circadian rhythm of sleep and wake cycle leading to falling asleep and waking up at random times of the day and night. I hope this helps. Thanks

3 0

3 years ago

Harman [31]

Answer:

I'm pretty sure the answer is A.

Explanation:

RNA is transcribed in the nucleus; after processing, it is transported to the cytoplasm and translated by the ribosome.

8 0

3 years ago

Read 2 more answers

The bones from an animal found at an archaeological dig have a C614 activity of 0.10 Bq per gram of carbon. The half-life of C61

erastova [34]

C14 is an isotope used in radiocarbon dating techniques to date organic matter remains. The age of these bones is approximately 6890 years.

<h3>What is Carbon 14?</h3>

Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.

Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.

The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.

The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.

Knowing the half-life of an element is useful to determine the age of the dead matter.

C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.

Available data:

The half-life of C14 is 5730 years
Bones activity of 0.10 Bq per gram of carbon

To answer this question we can make use of the following equation

Ln (C14T₁/C14 T₀) = - λ T₁

Where,

C14 T₀ ⇒ Amount of carbon in a living body. We know, by bibliography, that living organism activity is 0.23 Bq per gram of carbon. So, C14 T₀ = 0.23 Bq/g

C14T₁ ⇒ Amount of carbon in the dead body. C14T₁ = 0.1 Bq/g

λ ⇒ radioactive decay constant = (Ln2)/T₀,₅

T₀,₅ ⇒ The half-life of carbon 14 = 5730 years

T₀ = Time when the organism was alive

T₁ = Age of bones

Let us first calculate the radioactive decay constant.

λ = (Ln2)/T₀,₅

λ = 0.693/5730

λ = 0.0001209

Now, let us calculate the first term in the equation

Ln (C14T₁/C14 T₀) = Ln (0.1/0.23) = Ln 0.4347 = - 0.833

Finally, let us replace the terms, clear the equation, and calculate the value of T₁.

Ln (C14T₁/C14 T₀) = - λ T₁

- 0.833 = - 0.0001209 x T₁

T₁ = - 0.833 / - 0.0001209

T₁ = 6889.99 ≅ 6890 years

The bones are approximately 6890 years.

You can learn more about dating organic matter with carbon14 at

brainly.com/question/4149380

#SPJ1

6 0

2 years ago

Which term is used to classify amino acids in the diet?

Elodia [21]

Amino acids are considered as the building blocks of protein's, so amino acid rich food simply means protein rich food. There are 20 classifications for amino acids but nine of them are essential since our body can't make them. Usually in diet important amino acids are Lysine (C6H14N2O2), Leucine (C6H13NO2), Valine (C5H11NO2), Tryptophan (C11H12N2O2), Isoleucine (C6H13NO2) Phenylalanine (C9H11NO2) and Threonine (C4H9NO3).

3 0

3 years ago

Why do cells need to go through transcription

AlladinOne [14]

The cell needs transcription because the DNA cannot leave the nucleus and therefore cannot transmit info to the other cells.

4 0

3 years ago