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Marina86 [1]
3 years ago
13

In the midwest record setting cold temperatures often result when a

Geography
1 answer:
juin [17]3 years ago
8 0
CA air mass invades the religion
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Which state has the most active volcanoes?
Natalka [10]

Answer:

The answer is Alaska

Explanation:

I don't really have an explanation to why the volcano is most active

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3 years ago
The distance from Alexandria to Syene is about 500 miles. On the summer solstice the sun is directly overhead at noon in Syene.
svp [43]

Answer:

Earth circumference is 25000 miles

correct option is 25,000 miles

Explanation:

we have given here Alexandria to Syene distance = 500 miles

the sun is 1/50th of the circumference of the sky (about 7°)

as we know that Earth circumference done by astronomer Eratosthenes in 240 B.C

He observe on a particular time of day ( in noon) during the summer solstice

and there was no shadow in Syene in Egypt so  This was verified that the sun must be directly on overhead and not at an angle to the surface of the city at that time

so

In Alexandria he measured the position of sun at the same time and found it to be nearly (1/50)th of a complete circle

it would be 7.2 degree (when we do \frac{360}{50} = 7.2)

so 2 reference points being 2 cities for the sun

all measure circumference =  the distance between these two cities × 50  

and we have given 500 miles

so

Earth circumference = 500 × 50

Earth circumference is 25000 miles

correct option is 25,000 miles

4 0
3 years ago
Angles that are 90 are called
Mama L [17]

Answer:

right angles

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What are challenges for growing crops
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8 0
3 years ago
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