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Sophie [7]
3 years ago
7

7. What percent of the water in the world is salt water?

Social Studies
1 answer:
Ostrovityanka [42]3 years ago
4 0

Answer:

7. 96.5%

8. Lakes/oceans: 1.2 hours. Groundwater: 200-300 years. Glaciers: 20-100 years

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Write the two characters of long term memory that distinguishes it from short term memory
LenaWriter [7]

Answer:

long term memory =Encoding, which is the ability to convert information into a knowledge structure.

Encoding, which is the ability to convert information into a knowledge structure.Storage, which is the ability to accumulate chunks of information.

Encoding, which is the ability to convert information into a knowledge structure.Storage, which is the ability to accumulate chunks of information.Retrieval, which is the ability to recall things we already know.

short term memory =limited capacity (only about 7 items can be stored at a time)

limited capacity (only about 7 items can be stored at a time)limited duration (storage is very fragile and information can be lost with distraction or passage of time)

limited capacity (only about 7 items can be stored at a time)limited duration (storage is very fragile and information can be lost with distraction or passage of time)encoding (primarily acoustic, even translating visual information into sounds).

8 0
3 years ago
How fast must an object move before its length appears to be contracted to one-half its proper length?
notsponge [240]

The object must move with the speed of \frac{\sqrt{3} }2} times to approximately seeing that it is contracted to exactly half of its actual length.

<h3>How is this calculated?</h3>

The length contraction experimented by the object as it approaches lightspeed, in meters per second, is described by Lorentz contraction formula:

\frac{L}{L'} = \sqrt{(1) - (\frac{v}{c})^{2}

Here, v is the current speed m/s

c is the speed of light in m/s

L' is the length of the object at rest in m

L is the length of the object at the current speed in m

Now we know that

\frac{L}{L'}= \frac{1}{2} and \frac{v}{c} = r then,

\frac{1}{2} = \sqrt{1 - r^{2} }\\\frac{1}{4} = 1 - r^{2}\\r^{2} = \frac{3}{4}

Hence, r = \frac{\sqrt{3} }{2}

Therefore, the answer is the object must travel at a speed of \frac{\sqrt{3} }{2} times the lightspeed to be contracted to one-half its proper length.

To know more about the Lorentz contraction formula, visit:

brainly.com/question/17407131

#SPJ4

7 0
2 years ago
Why did Hawaii interest American expansionists?
alekssr [168]

Answer:

Interest in Hawaii began in America as early as the 1820s, when New England missionaries tried in earnest to spread their faith. Since the 1840s, keeping European powers out of Hawaii became a principal foreign policy goal. Americans acquired a true foothold in Hawaii as a result of the sugar trade. The United States government provided generous terms to Hawaiian sugar growers, and after the Civil War, profits began to swell.

I hope I helped, please correct me if I'm wrong!

4 0
3 years ago
Question 7 (1 point)
Luda [366]

Question 7. Governor eugene Talmadge opposed desegregation and welfare spending, federal government intervention, organized labors.

Question 8 FDR  visited Georgia often for the therapeutic waters. He visited 41 times Georgia. He had a retreat house in Georgia.

Question 9 Roads, public buildings, and other facilities were constructed using federal money.

True.

8 0
3 years ago
How does the writer use design best practices to make the document easy to read?
Len [333]
B by using font colors that coordinate with each other
6 0
3 years ago
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