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givi [52]
3 years ago
15

Constellations _____.

Geography
2 answers:
strojnjashka [21]3 years ago
7 0

Answer:

It's actually D. would not look the same to astronauts on the moon

shusha [124]3 years ago
5 0

Answer:

look the same all over the Earth

Explanation:

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Russia has
devlian [24]

Answer:

b

Explanation:

because I think so. dude

4 0
3 years ago
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.

4 0
3 years ago
After ww1 a unified, multi-ethnic nation of slavic peoples called _______ was formed in the balkans
MAVERICK [17]

The answer to your question is Yugoslavia. I just had this questions on my exam, and that was the answer.

7 0
3 years ago
What geographic feature is indicated by #10?
garik1379 [7]

Answer:

Zagros Mountains

Explanation:

The Zagros Mountains are one of the most dominant geographic features in the Middle East. This mountain range has length of roughly 1,600 km. There are three countries through which the Zagros Mountains are stretching, those being Turkey, Iraq, and Iran. The majority of the Mountain range runs through Iran, making up big portion of the border with Iraq, as well as being a natural barrier at the southern coast of the country.

These mountains have elevation of over 4,400 meters above see level. They are responsible for the dry climate in Iran, as they are a big natural barrier for the air masses, so they create a rain shadow, making the interior of Iran very dry.

7 0
3 years ago
Read 2 more answers
As a deep-water wave enters shallow water, the part of the wave in the shallowest water slows down. the deeper-water portion of
Afina-wow [57]

The answer is parallel.

To add, absolute water depth has nothing to do with the difference between shallow and deep-water waves. On the other hand, the ratio of the water’s deep to the wavelength of the wave is that one that determines it. A deep-water wave’s water molecules proceed in a circular orbit while the orbit of the molecules of shallow-water waves molecules’ orbit are elliptical.

7 0
3 years ago
Read 2 more answers
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