Q:For example, at school you may have performed an experiment designed to prove the existence of a magnetic field. It may go like this: Sprinkle iron filings on a sheet of paper. Then place the sheet over the magnet. When the sheet is vibrated, as if by magic the iron p. 27filings bunch up near the magnet’s poles and form into the pattern of the magnetic field. If you did that, could you actually see the magnetic field? No, but its effect on the iron filings is plain to see, giving you convincing proof that magnetism exists.

magnetism is the same force as electricity.its still simply the principle that opposite charges attract, but when force is defined in terms of relativity you get magnetism. Newtonian (simplified) force: fma (m mass, aacceleration) Relativity (correct) force: fma/sqrt(1-v^2/c^2) (vvelocity, cspeed of light in a vacuum) combined with the velocity of spinning electrons you can get tremendous scaling of the electrical force which allow it act at a further distance than could be explained in Newtonian physics. in general a field is simply a mapping of a unique vector on every point on a space.in this case it is an acceleration vector, and the source is some magnetic force. So a field is simply an abstraction used to facilitate calculations, and requires no explanation.I took the liberty of assuming you meant to ask what the magnetic force comes from

Q:why does magnate attarct metal?

it is NOT a good idea to ride with a patched tire on a bike,ive been riding for 35 years,and still the thought of doing that scares the shat out of me,please dont ever do it.

Q:I‘m stuck on my Physics homework and I need to know the answer asap. So can anybody tell me the difference between hard and soft magnetic materials?

Hard magnets, such as steel, are magnetised, but afterwards take a lot of work to de-magnetise. They're good for making permanent magnets, for example. Soft magnets are the opposite. With an example being iron, they are magnetised, but easily lost their magnetism, be it through vibration or any other means. These are best for things that only need to be magnetised at certain points, eg magnetic fuse/trip switch.

Q:Why can't capacitors use magnetic materials?

I'm afraid this kind of request does not involve the capacitor element itself, but the external environment, such as working in high frequency electromagnetic field environment instrument, to avoid the influence of electromagnetic field distribution of the material, to the magnetic properties of materials (such as nuclear magnetic resonance examination instrument).

Q:i think it does , but then again it could just be different materials o.O?i have two types of washers. I do not know the materials they are made from, but one is like a gold-brown while the other one is silverwhen i place a magnet above them, it attracts the silver one, but not the gold-brown one. Does it matter what color the washers are for them to be magnetic?

No. It's what inside that counts. No matter what color you are everyone is still human. You can't judge or hate someone just because of their skin color.

Q:Is the U disk made of magnetic material?

Not a magnetic material, is the main body of semiconductor material silicon.U disk is the "flash" (Flash Memory). It is made from silicon integrated circuits, each binary storage unit is a transistor and FET. Very similar, not by magnetic storage, but the injection or removal of electronic storage of binary information.

Q:You have been given the task of describing the theory of magnetic domains to a class of 5th graders. You have enough large paper arrows to give one to each student. Describe your plan to show them the domain nature ofA non-magnetic materialA permanent magnetAn electromagnet

Sowhat is your question exactly?

Q:why does a material with randomly aligned magnetic domains fail to exhibit magnetic properties?

No car manufacturer recommends using them and some even recommend specifically they not be used. Since these are the folks who design and build your engine I would trust them, not the guy looking to make a buck off your guilt by claiming you need to use their product to take care of your car properly.

Q:How to measure the damage of nano material attached to metal surface?

In traditional ceramic materials, the grain is difficult to slide, the material is brittle and the sintering temperature is high. The grain size of nano ceramics, grain easily in other grain sports, therefore, nano ceramic materials with high strength and high toughness and good ductility, these properties make nano ceramic material for cold working at room temperature or under high temperature. If the nano ceramic particles forming in high temperature, and surface annealing treatment can make nano materials become a conventional ceramic material to keep the surface hardness and chemical stability, high ductility and internal properties of ceramic nano material still has.

Q:im trying to invent a new power source but first i need to know this one detail. what material can I use for a shield against magnetic pull? is there anything?

MagnetShield High Saturation Magnetic Alloy First line of defense for shielding strong magnetic fields from magnets, speakers, small transformers and motors. Strong magnetic fields are harder to shield because they tend to saturate the shielding material. This 4 wide foil is a hefty .010 thick and has an exceptionally high magnetic saturation of 21400 Gauss and maximum permeability of 4000. Tin plated for excellent corrosion resistance and better conductivity, it can be soldered or painted. MagnetShield typically reduces fields up to a factor of 2 or 3 depending on size/shape of the shield. Can be used in multiple layers, and/or in combination with a higher permeability alloy such as Joint-Shield for higher attenuation. Annealing is not necessary with this material. For increased shielding effectiveness, consider the following strategies: Good: Layer(s) MagnetShield Better: One or more layers of MagnetShield (closest to the source of field), followed by one or more layers of a high permeability material such as Joint-Shield or MagStop Plate.