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Harrizon [31]
3 years ago
5

What do scientists use to divide the geologic time scale?

Physics
1 answer:
dmitriy555 [2]3 years ago
3 0
The use Major changes in mineral deposits in the rock layers. 
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After observing a moth that is camouflaged against dark-colored bark, a scientist asks a question. The scientist discovers that
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Technician A says that the freezing point of a substance is the temperature at which the substance changes state from a solid to
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Technician B is correct

Explanation:

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Increasing the pressure and decreasing the temperature of a liquid increases its freezing point. For example, in other to freeze water i.e to change water to ice, it has to be kept in a fridge at a temperature lower than the temperature of the water. The essence of covering the fridge after placing the water in the fridge is to increase the pressure of the liquid hence increasing its freezing rate.

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3 years ago
How does Doppler ultrasound technology differ from ultrasound technology
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. Doppler ultrasound is based on absorption of sound, and other

ultrasound technology is based on reflection.D.

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Two<br>vectors Å and °B are such that A = 2<br>and A-B-C find the angle between them​
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3 years ago
What is the energy stored between 2 Carbon nuclei that are 1.00 nm apart from each other? HINT: Carbon nuclei have 6 protons and
Andrei [34K]

Answer:

A. 8.29\times 10^{-18}\ J

Explanation:

Given that:

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k = Boltzmann constant = 9\times 10^{9}\ Nm^2/C^2

r = distance between the two carbon nuclei = 1.00 nm = 1.00\times 10^{-9}\ m

Since a carbon nucleus contains 6 protons.

So, charge on a carbon nucleus is q = 6p=6\times 1.6\times 10^{-19}\ C=9.6\times 10^{-19}\ C

We know that the electric potential energy between two charges q and Q separated by a distance r is given by:

U = \dfrac{kQq}{r}

So, the potential energy between the two nuclei of carbon is as below:

U= \dfrac{kqq}{r}\\\Rightarrow U = \dfrac{kq^2}{r}\\\Rightarrow U = \dfrac{9\times10^9\times (9.6\times 10^{-19})^2}{1.0\times 10^{-9}}\\\Rightarrow U =8.29\times 10^{-18}\ J

Hence, the energy stored between two nuclei of carbon is 8.29\times 10^{-18}\ J.

8 0
3 years ago
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