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Why can't a perpetual motion machine be made from magnets repelling each other?
The two magnets would push each other apart until friction takes-over, then there'd be no more motion.
What are 5 facts about electromagnets?
1 a nuke uses electromagnets so does not fall apart they use it to keep the iron shell on and so it does not fall over and does not explode randomly.
Which magnets attract?
Magnets attract specific types of metals such as: Iron Nickel Cobalt Steel Try this: Get a magnet hover it over different objects, see what it attracts and repels (doesn't attract).
Can magnets wear out?
Magnets can be destroyed just like any physical object can be destroyed if enough force is applied. Magnets can also be de-magnetised in a number of ways, including heating them, bending them out of shape, or exposing them to electric current.
What is advantage?
An advantage is something which assists one person over another in a given situation.
Why is an electromagnet better that a bar magnet?
Electromagnets can have higher "domain currents" than permanent magnets, and have no non-aligned nor anti-aligned domains like permanent magnets tend to have (or get over time).
What do electrons microscopes use to focus and magnify an image?
Electromagnets focus the electron beam on the specimen. This is a good advantage of electron microscopes over traditional light microscopes where lenses have to be used. Electromagnets can be used as electrons are charged particles and are deflected by magnetic fields.
Why electromagnets over permanent magnets for a large dc machine?
The flux density of an electromagnet can be easily controlled. It's also easy and cheap to produce a large flux density with an electromagnet which is necessary for such large dc motors. Permanent magnets are generally expensive. For such a large motor,a very large permanent magnet will be needed for that motor which will not be ideal.AnswerElectromagnets are more powerful than temporary magnets, and -as pointed out above- their flux density can be controlled.
Why can't a perpetual motion machine be made from magnets repelling each other?
The two magnets would push each other apart until friction takes-over, then there'd be no more motion.
What is your advantage to other applicant?
Many people might consider their charm an advantage over other applicants. Others might consider their organizational skills to be an advantage.
Why did the prehistoric man have an advantage over other animals?
The brain.
Does the energy that Magnets produce ever run out?
Yes magnets get weaker over time.
What are 5 facts about electromagnets?
1 a nuke uses electromagnets so does not fall apart they use it to keep the iron shell on and so it does not fall over and does not explode randomly.
What advantages does a submarine have over other warships?
The primary advantage a submarine has over other ships is its ability to submerge and hide.
What is the advantage of the violin over other stringed instrument?
it can either be pekipek
What is your edge among the other contestants?
It is to have an advantage (edge) over an opponent.
Does a plant have an advantage over animals Or do animals have an advantage over plants?
they have equal advantages over each other because animals get eaten by other animals and animals eat plants plants make there own food so they are equal
