why do north and south magnets attract

why do north and south magnets attract

magnet is any object that has a magnetic field. It attracts ferrous objects like pieces of iron, steel, nickel and cobalt. In the early days, the Greeks observed that the naturally occurring 'lodestone' attracted iron pieces. From that day onwards began the journey into the discovery of magnets. These days magnets are made artificially in various shapes and sizes depending on their use. One of the most common magnets - the bar magnet - is a long, rectangular bar of uniform cross-section that attracts pieces of ferrous objects. The magnetic compass needle is also commonly used. The compass needle is a tiny magnet which is free to move horizontally on a pivot. One end of the compass needle points in the North direction and the other end points in the South direction. The end of a freely

 why do we need to know the metric system

why do we need to know the metric system

Not only scientists rely on the metric system. Almost every government in the world has adopted it as the national system of measurement, and of the three that aren't committed to it, at least one в the United States в considers it the preferred system for international trade. The U. S. National Council of Teachers of Mathematics has recommended that it be the primary measurement system taught in schools. Unlike the British Imperial System, the metric system, or SI (from the French SystГЕme International ), is based on a natural constant. SI is designed to make measurements and calculations easy to perform and understand, which is one of the main reasons scientists use it. The metric system originated in 17th century France. The base unit, the meter, was originally conceived by Gabriel

 why do newborns throw up breast milk

why do newborns throw up breast milk

Is it normal for my baby to vomit? It s common for babies to vomit often in the early weeks as they and as their bodies develop. You can tell when your baby is vomiting, rather than just (possetting), because there will be a lot more coming out. Vomiting can be frightening for your baby, so he s likely to cry. Everything from to indigestion can cause your baby to be sick. Even a prolonged bout of crying or coughing can trigger this reflex. So you may see quite a lot of vomiting in your baby s first few years. An attack of vomiting will generally subside six hours to 24 hours after it starts. Your baby shouldn t need any particular treatment, apart from drinking plenty to ensure he stays. As long as your baby seems otherwise healthy and continues to gain weight, there s usually no need to

 why is critical thinking important in psychology

why is critical thinking important in psychology

I have your podcast in my rotation and often catch it along with other viewpoints for my 2 hour each way to work commute to and from work. I was patient and listened to both episodes. I waited and digested it before taking the time to give you another vantage point. My conclusion is that your podcast on critical thinking was lacking in, critical thinking. БSee both sides of the issue? Б You did not. You did not explore why rational people would want this material pulled from the public school curriculum. Instead, you assaulted Fox news as agenda driven (curious you didnБt point to the lack of objectivity from other news networks) and completely brushed over the gap between critical thinking being a great thing and what goes wrong with executing public policy. As you correctly point out,

 why would a cat eat cat litter

why would a cat eat cat litter

A cat that suddenly starts eating litter is almost always sick, says Jane Brunt, a from Towson, Maryland. Most often when a cat begins to eat kitty litter it is due to a health condition. The catвs instincts drive him or her to consume the litter in hopes of compensating for or correcting the condition. Most often, the consumption of kitty litter is a symptom of anemia. Anemia is a disease in which there is a lack of red blood cells and hemoglobin in the body. Another indicator of anemia to look for is paleness. You can check to see if your cat is pale by looking at his or her gums. If your catвs gums are white or bluish, rather than the healthy pink color that they should be, he or she is exhibiting paleness. of paleness should be taken to a veterinarian as soon as possible. Cats with a

 why is word wrap an important feature of word

why is word wrap an important feature of word

Peripheral nerve axons and their supporting Schwann cells are held together by connective tissue forming nerve fibers. The connective tissue of nerves has three distinct components - endoneurium, perineurium, and epineurium. Endoneurium is a thin layer of connective tissue associated with individual axons. Perineurium surrounds small groups of axons (each wrapped in endoneurium) called fascicles that conduct similar types of information or arise from a specific anatomic region of the body. The epineurium is a layer of dense connective tissue that surrounds and binds together many nerve fascicles into a common bundle. Central nervous system - The brain and spinal cord are enclosed within three sequential connective tissue membranes called meninges. The innermost layer resting directly on

 why do some hard boiled eggs peel easier than others

why do some hard boiled eggs peel easier than others

Ever struggled with the supposedly simple kitchen task of boiling and peeling an egg? A few weeks ago I was at my brother s lovely new house in the country and had been inspired to make a salmon kedgeree for dinner. Which meant boiling up and peeling a few eggs. I didn t really think much of it, although it had been a very long time since I d boiled an egg. But when I came to the peeling part, I found it very perplexing. I banged each egg on the sink to crack the shells and while some peeled effortlessly, almost in one piece, others were seriously stubborn. These ended up pockmarked where some bits of the white had been peeled away with the shell. Poor eggs. So when my brother asked me the secret to peeling boiled eggs, I had to share my frustration with him. It was time to do some

 why the industrial revolution began in great britain

why the industrial revolution began in great britain

The textile industry, in particular, was transformed by industrialization. Before mechanization and factories, textiles were made mainly in peopleБs homes (giving rise to the term cottage industry), with merchants often providing the raw materials and basic equipment, and then picking up the finished product. Workers set their own schedules under this system, which proved difficult for merchants to regulate and resulted in numerous inefficiencies. In the 1700s, a series of innovations led to ever-increasing productivity, while requiring less human energy. For example, around 1764, Englishman James Hargreaves (1722-1778) invented the spinning jenny (БjennyБ was an early abbreviation of the word БengineБ), a machine that enabled an individual to produce multiple spools of threads

 why is my body aching and tired

why is my body aching and tired

For many of us, the boundless energy of childhood is just a distant memory. As kids, we fired on all cylinders all day, every day. But as adults, keeping energy levels up can be more challenging. Working long hours, poor diet, lack of exercise and medical conditions can all lead to fatigue. But how do we know if lethargy is due to bad habits, or something more serious? Naturopath Mark Shoring, from the Endeavour College of Natural Health, says fatigue is often a body s way of crying out for help. Often people can simply push themselves too hard, Shoring says. They get to the point of exhaustion and don t give their bodies a chance to recover. Shoring says a poor diet combined with inadequate sleep or exercise will eventually take its toll. The symptoms of fatigue can be physical, mental

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