Calculate population density population=300 Area (km)2 = 40 population density=?

In which layer of earth does convection occur?

Scrat [10]

Answer:

D, the Inner Core

Explanation:

All Geothermal processes must occur in the midst of extreme heat. The other answers are layers that are either in a region of extreme cold or above the Earth's crust.

8 0

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

3 0

2 years ago

Help solve this Psychology related question. Explain why scientists think schizophrenia probably has multiple causes

Lemur [1.5K]

Answer:

there is no concluding evidence or single deterministic cause

Explanation:

Current research suggest that certain physical, genetic, psychological and environmental elements trigger likelyhood of a person being more probable to become the condition.

Some groups of people may be more likely to schizophrenia from a genetic perspective , and with stressful or hard emotional life events, traumas this may trigger a psychotic episode.

A background of relatives having schizophrenia increases the risk.

As well as inmmune system activation, like inflammations or other diseases.

Pregnacy and birth conditions can lead to some impact on brain development

In conclusion many factors account for multiple causes and there has not been also found a particular setting between inner and external variables for identifying the appeareance of .schizophrenia .

8 0

3 years ago

Terrigenous sediment consists primarily of mineral grains eroded from

Norma-Jean [14]

The answer is letter C.

Terrigenous sediments come from continental rocks, meaning they come from inland. The erosion of rocks from the environment (e.g. volcanic eruptions, rock weathering) causes the development of these sediments. These sediments may consist of sand, mud, and silt, that are usually carried to bigger bodies of water by rivers.

5 0

3 years ago

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True or false: If continental glaciers expand (increase in volume) sea level would lower

charle [14.2K]

True because it causes the water to freeze up in to a glacier until another continentail change happens

6 0

3 years ago

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