Is it true that farmers grow corn by planting cow corn on the out side and sweet corn on the inside of the field so that people don't take the sweet corn?
Actually no.. quite on the contrary if any. If the farmer grows both cow corn and sweet corn, the way we did it was the sweet corn on the outside 3 or 4 or however many rows, and the cow corn on the inside. It made it easier to pick, and you didn't ruin any cow corn when you tried to harvest it, because the outside was sweet corn which had already been picked.
Good question. I think it is mainly to attempt to get a higher yield or an earlier harvest, in spite of the fact that numerous studies have shown that this is, in fact, quite rare. In the US, farmers are also somewhat susceptible to a certain degree of peer pressure. As soon as one farmer in a neighborhood starts, then all his neighbors start getting "itchy" to follow suit. Then their neighbors start, then theirs…
A GPS helps with planting crops because you can follow exact coodrinates. A good GPS system will allow you to be accurate within 5 feet, and a great one within 5 inches. This allows you to plant, accurately, to maximum amount of crops without planting outside the specified area. A GPS also allows for less overlapping on passes through a field which saves a lot of diesel fuel and time for farmers.
The three field system was neither fair nor corrupt. It was not something that can be evaluated in terms of morality or ethics. The three field system was a system for crop rotation under which one third of the land was planted in a spring planting, one third was planted with different crops for in a fall planting, and one third was left fallow. It was more efficient than the previous two field system. It…
Would growing two different crops in alternate rows reduce the farmers need to add chemicals to a field?
That's one way organic farmers use to avoid using chemicals. The planting of complementary crops and interplantings can help prevent the intrusion of a multitude of pests. It doesn't work for existing industrial (commercial) agriculture because all the equipment and production methods are dependent on the system being a monoculture in order to gain economy of scale.
The three field system contributed to the increase in populations and numbers of towns and cities. The three field system increased agricultural production in Western Europe. This lead to a situation in which a smaller number of farmers could feed a greater number of people, and this meant some of the farmers could get jobs in towns and cities. The growth of towns and cities lead, in turn, to an increase in industry and trade.
Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
The net electric field inside a dielectric decreases due to polarization. The external electric field polarizes the dielectric and an electric field is produced due to this polarization. This internal electric field will be opposite to the external electric field and therefore the net electric field inside the dielectric will be less.