3 years ago

What does agriculture mean

2 answers:

7 0

Agriculture means the practising farming including cultivation of the soil for the growing of crops and food and other products.

Natalka [10]3 years ago

6 0

Answer: It is the science or practice of farming.

Explanation: The official definition is: Agriculture is the science and art of cultivating plants and livestock.

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2 years ago

This type of energy is obtained through food

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2 years ago

What would be the escape speed for a craft launched from a space elevator at a height of 54,000 km?

Natasha_Volkova [10]

Answer: 3.63 km/s

Explanation:

The escape velocity equation for a craft launched from the Earth surface is:

$V_{e}=\sqrt{\frac{2GM}{R}}$

Where:

$V_{e}$ is the escape velocity

$G=6.67(10)^{-11} Nm^{2}/kg^{2}$ is the Universal Gravitational constant

$M=5.976(10)^{24}kg$ is the mass of the Earth

$R=6371 km=6371000 m$ is the Earth's radius

However, in this situation the craft would be launched at a height $h=54000 km=54000000 m$ over the Eart's surface with a space elevator. Hence, we have to add this height to the equation: