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3 years ago

What was called the dark continent?

1 answer:

3 0

Africa was known as the Dark continent Because a man name Henry Stanley(A United States Explorer and an Journalist) named it because the land was so mysterious

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Why do they pressurize the cabin of airplane at 7,000 ft

n200080 [17]

Hey there!

Airplanes must be pressurized when flying at high altitudes so that the oxygen levels stay normal for us to breathe. The higher you go up, the thinner the air gets, which causes breathing problems for us humans.

Thank you!

5 0

2 years ago

How does global trade affect people in Positive and negative ways

Evgesh-ka [11]

Answer:

positive: decreases the amount of surplus goods

negative: cultural differences, language barriers, shipping customs

Explanation:

5 0

2 years ago

Read 2 more answers

The radius of the cone id 1.75 inches an the height id 3.5 inches. If the diameter of the bubble gum ball is 0.5 inches what is

Olegator [25]

Answer: $11.15 in^{3}$

Explanation:

We need to know the volume of the cone that can be filled with bubble gum ball, but firstly we need to calculate the volume of the cone $V_{C}$ and the volume of the buble gum ball (a sphere) $V_{B}$ :

Volume of the cone:

$V_{C}=\frac{\pi R^{2}h}{3}$ (1)

Where:

$R=1.75 in$ is the radius of the cone

$h=3.5 in$ is the height of the cone

$V_{C}=\frac{\pi (1.75 in)^{2}3.5 in}{3}$ (2)

$V_{C}=11.22 in^{3}$ (3) This is the volume of the cone

Volume of the gum ball:

$V_{B}=\frac{4\pi r^{3}}{3}$ (4)

Where:

$r=\frac{0.5 in}{2}=0.25 in$ is the radius of the sphere (half the diameter)

$V_{B}=\frac{4\pi (0.25 in)^{3}}{3}$ (5)

$V_{B}=0.065 in^{3}$ (6) This is the volume of the gum ball

Know we are able to find the closest approximation of the volume of the cone that can be filled with bubble gum ball, by calculating the difference or substracting (6) from (3):

$V_{C}-V_{B}=11.22 in^{3}-0.065 in^{3}$ (7)

Finally:

$V_{C}-V_{B}=11.15 in^{3}$ (8)

8 0

2 years ago

In what country can you actually see the Earth's crust being pushed apart

kap26 [50]

Explanation:

Volcanoes. It is an impressive sight: two sides of land so visibly ripped apart. The Mid-Atlantic Ridge that is to blame runs through the whole of Iceland

7 0

2 years ago

Volcanic eruption's to begin under ocean waters rise up in form islands like the Hawaiian islands are called

SCORPION-xisa [38]

Answer:

Seamounts

Explanation:

I did it on USATestPrep

4 0

2 years ago