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Sergio039 [100]
3 years ago
12

To be effective, a scientific theory must be continually tested. If observations and experiments favor it, a theory can be furth

er developed and refined. If they do not, the theory must be reformulated or rejected. Comparing what you know about the predictions of each Moon formation theory, determine which of the following observations and experiments have been verified.
A- Earth has a large iron core, but the Moon does not.
B- The mantles of Earth and the Moon have similar compositions.
C- Computer simulations predict that a collision between
D- Earth and a Mars-sized object would produce a Moon-sized satellite with a stable orbit.
Geography
2 answers:
Nikitich [7]3 years ago
5 0

Answer:

B. The mantles of Earth and the Moon have similar compositions.

Explanation:

Among the options enlisted, option B is the correct and appropriate answer. Going by the coformation theory, it is established that the mantles of earth and the moon have similar composition. It's generally believed that the mantle of the Moon is largely composed of the minerals olivine, orthopyroxene and clinopyroxene. This is no different from the Earth composition, although there's a possibility of more identified minerals in one than the others.

notka56 [123]3 years ago
3 0

Answer:

Explanation:

- Earth has a large iron core, but the Moon does not.

- The mantles of Earth and the Moon have similar compositions.

-Computer simulations predict that a collision between Earth and a Mars-sized object would produce a Moon-sized satellite with a stable orbit.

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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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Answer:

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