## How did primitive animal husbandry and agriculture develop?

About 10 thousand years ago, people began to domesticate wild animals, as well as sow and cultivate fields. This event in history is called the Neolithic Revolution, when

## If the pressure force of the powder gases in the bore is 4 N, then at what speed will a bullet weighing

If the pressure force of the powder gases in the bore is 4 N, then at what speed will a bullet weighing 7.9 g fly out of a

## Calculate the length of the broken line ABCDE if AB = 8cm, BC = 14cm, CD = 23cm, DE = 10cm.

To solve this problem, we need to remember what a broken line is. A broken line is a geometric concept. A polyline consists of several segments or links

## What amount of phosphorus oxide (v) substance was formed if 0.2 mol of phosphorus entered

What amount of phosphorus oxide (v) substance was formed if 0.2 mol of phosphorus entered the reaction 4p + 5o2 – 2p2o5 4P + 5O2 → 2P2O5 According

## How long did a pedestrian travel if he walked 10 km at a speed of 5 km / h and 12 km at a speed of 6 km / h?

Task data: S1 (first leg of the route) = 10 km; V1 (pedestrian speed on the first leg of the path) = 5 km / h; S2 (second

## Why do many studies compare the nervous system to a computer?

Our body as a whole can be compared with a computer, but it is more correct to draw an analogy between the nervous system and a computer. The

## An iron beam 10 meters long and weighing 500 kg lies on the ground. How much force must

An iron beam 10 meters long and weighing 500 kg lies on the ground. How much force must be applied to lift it at one end. These tasks:

## What is the power when moving a body 24 m in 1 min. under the action of a force of 200 N?

Problem data: S (distance to which the taken body was displaced) = 24 m; t (duration of body movement) = 1 min (in SI t = 60 s);

## To a solution containing 7.2 g of copper sulfate (2) was added a solution containing 2.34 g

To a solution containing 7.2 g of copper sulfate (2) was added a solution containing 2.34 g of sodium sulfide. Determine the mass of precipitated sediment The reaction

## In triangle ABC, the height AD is 4 seconds less than the side BC. The AC side is 5 cm.

In triangle ABC, the height AD is 4 seconds less than the side BC. The AC side is 5 cm. Find the perimeter of the ABC triangle if