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3 years ago

Quick just answer something its worth 50 points

Geography

2 answers:

kari74 [83]3 years ago

7 0

Answer:

Explanation:

thank you i guess

Alika [10]3 years ago

5 0

Haha well how are you doing?

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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

3 0

3 years ago

The loss of topsoil in very dry areas of the world is known as *A. *soil intensification. *B. *desertification. *C. *water inten

irakobra [83]

The loss of top soil in very dry areas of the world is known as desertification. The correct option among all the options given in the question is option "B".<span>Desertification is the phenomenon in which land degradation of a very dry region increases and the water bodies typically dries up. This also results in not only loss of vegetation but also animal life. This phenomenon can be caused not only due to climate changes, but also due to human activities.</span>

7 0

4 years ago

Read 2 more answers

. Assume you travel to the Alpha Centauri star system and look back at the Solar System with your naked eye.

Sladkaya [172]

Answer:

The sun would be mostly visible form that distance.

Explanation:

Alpha Centauri is the closest star form earth and solar system and it has about 4.37 light-years from the sun and is a triple star system that consists of the A, B, and C centuria. If viewed from the space the sun would be visible in the solar system and the earth and Jupiter as a tiny dot.

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3 years ago

Which of these are expected to happen all over the globe? Enter the tropics would expand with the pool surface temperatures at t

drek231 [11]

The tropics would expand.

Explanation:

With the global temperatures rising the Earth is projected to have multiple changes, climatic ones and even in the shape of the landmasses. Because of the rising global temperatures the ice at the poles is expected to melt, if not all than in solid amount, which in turn will rise the sea level.

Higher sea level will mean that there will be less land mass, but also that the land mass will be under bigger maritime influence when it comes to the climate. The ocean currents also are expected to gradually become dominated by warm ocean currents, while the cold ones will be much less and with much lesser global influence. That will cause expansion of the tropics, mostly toward north, as toward south there is little land mass, and such expansion will totally change the landscape, the habitats, the diversity and type of species present in certain areas.

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3 years ago

One angle in an obtuse isosceles triangle measures 40°. What are the measures of the other two angles?

GarryVolchara [31]

C. 40 degrees and 100 degrees

6 0

4 years ago