Ask question

Ask question

All categories

3 years ago

14

How sinkholes are created and from which rock group do they belong to?

1 answer:

andreyandreev [35.5K]3 years ago

4 0

Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them. As the rock dissolves, spaces and caverns develop underground.

Sinkholes are formed when the land surface above collapses or sinks into the cavities or when surface material is carried downward into the voids. Drought, along with resulting high groundwater withdrawals, can make conditions favorable for sinkholes to form.

You might be interested in

if you were standing on the moon and saw the earth in it's full phase, in what phase would the moon be in?

Dmitrij [34]

Answer:

The phases are always the reverse of each other. When we see the moon as nearly full, any moon people would see a slim crescent Earth. When we see a completely full moon, the moon, Earth and sun are in a line – with Earth in the middle.

Explanation:

6 0

3 years ago

When Carla solved for the height from the ground to the point where the ladder

Westkost [7]

Answer:

<em>See explanation</em>

Explanation:

Given

Represent the vertical angle with $\theta$

$\theta = 75$

The question has incomplete details because the length of the ladder is not given; neither is the distance between the ladder and the wall given.

<em>See attachment for illustration</em>

So, this solution will be based on assumptions.

Represent

- The height from ground to the top of the ladder with y

- The length of the ladder with L

- The distance between the ladder and the wall with x

Carla could solve for y in any of the following ways:

1. Tan formula

$tan \theta = \frac{opp}{adj}$

In this case:

$tan \theta = \frac{x}{y}$

Multiply both sides by y

$y * tan \theta = \frac{x}{y} * y$

$y * tan \theta = x$

Divide both sides by tan

$y = \frac{x}{tan \theta}$

$y = \frac{x}{tan 75}$

This can be used if the distance (x) between the ladder and the wall is known.

Assume x = 15

$y = \frac{15}{tan 75}$

$y = 4.02$

2. Cosine formula

$cos \theta = \frac{adj}{hyp}$

In this case:

$cos \theta = \frac{y}{L}$

Multiply both sides by L

$L * cos \theta = \frac{y}{L} * L$

$Lcos \theta = y$

$y = Lcos \theta$

$y = Lcos75$

This can be used if the length (L) of the ladder is known.

Assume L = 15

$y = 15 * cos75$

$y = 3.88$

3 0

3 years ago

Why do you think governments might want free trade?

Katyanochek1 [597]

Answer:

Save money

Explanation:

cost of imported goods decrease which is good for economic growth and helps with forgein relationships

3 0

3 years ago

Read 2 more answers

Why is there no boundary at about 1000 meters in the benthic environment but a significant one at about the same depth in the pe

tatyana61 [14]

Answer:21

Explanation:19+1

8 0

3 years ago

Slang includes the formal aspects of a language. <br><br> A. True <br> B. False

cluponka [151]

Answer:

B) False

Explanation:

It's informal language.

informal language is literally a synonym for slang.

3 0

3 years ago