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3 years ago

The mid-atlantic ridge and the east pacific rise are examples of

1 answer:

7 0

Answer: <span>Divergent Boundaries

Both are mid ocean ridges where:

The mid-atlantic ridge is a boundary that is a divergent tectonic plate. Its location is along the Atlantic ocean's floor.

The east pacific rise i</span>s a boundary that is a divergent tectonic plate. Its location is along the pacific ocean's floor.<span>

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Which of the following is a global, rather than an ethnic, religion?

Makovka662 [10]

Base on the number of the followers of the religion, the answer will be B. Buddhism.
Jainism has only 4-6 million followers.
Sikhism has only 25 million adherents, making Sikhism as the fifth largest religion in the world.
Buddhists number between an estimated 480 million to 530 million making it as one of the world's major religion.

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2 years ago

Which of the following countries has the most landmass in Asia? Ukraine Belarus Russia Poland NextReset

mario62 [17]

Russia.
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2 years ago

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Which of these Australian physical features creates a rain shadow on the country’s eastern coast and interior?

motikmotik

The answer is to this is D.) The Great Dividing Range.

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3 years ago

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Calculate the amount, in grams, of an original 300-gram sample of radioactive isotope Potassium-40 remaining after

Aleksandr [31]

Answer:

The current amount of the Potassium-40 sample is approximately 37.521 grams.

Explanation:

The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time ( $m (t)$ ), in grams, is described below:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ (1)

Where:

$m_{o}$ - Initial mass, in grams.

$t$ - Time, in years.

$\tau$ - Time constant, in years.

The time constant can be found from half life ( $t_{1/2}$ ), in years, described in statement:

$\tau = \frac{t_{1/2}}{\ln 2}$ (2)

If we know that $m_{o} = 300\,g$ , $t = 3.9\times 10^{9}\,yr$ and $t_{1/2} = 1.3\times 10^{9}\,yr$ , then the current amount of the sample is:

$\tau = \frac{1.3\times 10^{9}\,yr}{\ln 2}$

$\tau \approx 1.876\times 10^{9}\,yr$

$m = (300\,g)\cdot e^{-\frac{3.9\times 10^{9}\,yr}{1.876\times 10^{9}\,yr} }$

$m\approx 37.521\,g$

The current amount of the Potassium-40 sample is approximately 37.521 grams.

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2 years ago

Which dating technique was used to establish that the age of the volcanic ash at the Laetoli site was 3.6 million years old

Schach [20]

The dating technique which was used to establish the age of the volcanic ash at the Laetoli site is: potassium-argon (K/A) dating.

<h3>What is absolute dating?</h3>

Absolute dating can be defined as a radioactive process that is typically used to accurately determine the age of a rock, volcanic ash or fossil, by measuring the decay of the isotopes that is associated with the rock or within the fossils.

Thus, scientists can accurately determine the age of a volcanic ash, rock or fossil by measuring its isotope concentration such as through the use of potassium-argon (K/A) dating.

Read more on dating here: brainly.com/question/20325924

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2 years ago