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4 years ago

What is the layer of permanently frozen subsoil in the tundra?

Geography

2 answers:

shutvik [7]4 years ago

7 0

Answer:

Permafrost

Explanation:

It is permafrost because in the arctic tundra because it is frozen most of the year

elena55 [62]4 years ago

6 0

Answer:

The permafrost found in the tundra is the permanently frozen subsoil layer.

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Which of the following political issues in East Asia has raised the most security concerns?

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D.the testing of nuclear weapons by north korea. because they have more weapons that could destroy many places

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When it is winter in Russia what season would it be in Argentina

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3 years ago

Which of the following deserts is characterized by moderately warm to cool temperatures?

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The correct answer is (c.) coastal. coastal deserts are characterized by moderately warm to cool temperatures. The cool and long winters of these coastal deserts are also followed by warm and long summers. A good example of this type of desert is the Atacama of Chile.

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Compare the atmospheres of the four inner planets.<br><br> Please answer this thank you so much!

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Answer:

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3 years ago

3. A space vehicle is traveling at 4300 km/h relative to Earth when the exhausted rocket motor (mass 4m) is disengaged and sent

kvv77 [185]

Answer: Vce= 4234.4km/hr or 1180m/s

Explanation:

Mass of rocket motor Mr= 4m

Mass of control module Mc= m

Initial velocity of spaceship relative to earth Vs= 4300km/hr

Final velocity of command module relative to the rocket motor Vrc = 82km/hr

Total mass of spaceship M= 4m+m= 5m

Using law of conservation of momentum;

MVs= MrVre + McVce eqn1

Vre = Vrc+Vce eqn2

Where Vce is velocity of control room relative to the earth and Vre is velocity of rocket motor relative to the earth

Substituting eqn2 to eqn1, we have.

MVs= Mr(Vrc+Vce) +McVce

MVs= MrVrc+MrVce+McVce

Making Vce the subject of formula.

Vce = (MVs-MrVrc)/(Mc+Mr)

Substituting the values we have,

Vce = (5m×4300km/hr - 4m×82km/hr)/ (m+4m)

Vce = 21172m/5m

Vce= 4234.4km/hr or 1180m/s

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3 years ago