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Montano1993 [528]
3 years ago
5

1 Write 7 next to the statements that are true.

Physics
1 answer:
Grace [21]3 years ago
7 0

Answer: The pressure in a liquid dec reaches with depth. F

The pressure in a liquid increases with depth.

The upthrust on an object is larger when it is deeper in a pool. 7

The bottom of a dam is thinner than the top of a dam. F

The bottom of a dam is thicker than the top of a dam.

The pressure is bigger at the bottom of a lake because of the weight of water above it. 7

I think these are the answers.

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A two-dimensional crystal has a rectangular unit cell, with spacings between the centers of the atoms of 0.5 nm in one direction
pav-90 [236]

So directly the cell density value in a rectangle is:

5*10^{17} cells/cm^{2}

In this exercise, we must first calculate the area of ​​the rectangle, remembering that you need to convert from nm to cm is:

A=B*H\\A=(0.4*10^{-7})*(0.5*10^{-7})= 2*10^{-15}

Next, let's calculate the density from the calculated area:

\frac{N}{A} = \frac{1000}{2*10^{-15} } = 5*10^{17}

In this way, the calculation represents that there is:

5*10^{17} cells/cm^{2}

Learn more: brainly.com/question/18320053

6 0
3 years ago
A proton in a particular electric field experiences an electric force whose magnitude is equal to the weight of the proton. Dete
gavmur [86]

Answer:

Electric field, E=10^{-7}\ N/C

Explanation:

It is given that, a proton in a particular electric field experiences an electric force whose magnitude is equal to the weight of the proton such that,

qE=mg

E=\dfrac{mg}{q}

E=\dfrac{1.67\times 10^{-27}\times 9.8}{1.6\times 10^{-19}}

E=1.02\times 10^{-7}\ N/C

or

E=10^{-7}\ N/C

So, the magnitude of electric field at the location of the proton is 10^{-7}\ N/C. Hence, this is the required solution.

8 0
4 years ago
Find the configuration of any tow​
Yuki888 [10]

Answer:

<h2>Ok I choose Copper and Zinc , Here is your answer⤴️⤴️</h2><h3>Hope it's helpful for you mark me as brainlist please</h3>

6 0
3 years ago
4. Many of the teachers think that if a student sleeps more on the night before the test, then they
Effectus [21]

Answer:

a sleep doesnt get to depict whether you get a good grade or not its what you know.

8 0
1 year ago
How does increasing the<br> speed of an object change its<br> momentum?
aleksley [76]

Answer:

When you increase speed, you add energy and increase momentum as it would require more energy to change, stop or reverse the object's direction of travel than before the speed increase. Increasing the speed increases the momentum proportionally.

Explanation:

3 0
4 years ago
Read 2 more answers
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