Magnetism

The number of paperclips a bar magnet can pick up will depend on the strength of the magnet and the size of the paperclips. In general, a typical bar magnet can pick up several small paperclips at once.

Bioelectromagnetism is an aspect of all living things, including all plants and animals. Some animals have acute bioelectric sensors, and others, such as migratory birds, are believed to navigate in part by orienteering with respect to the Earth's magnetic field. Also, sharks are more sensitive to local interaction in electromagnetic fields than most humans.

Magnetism is the number of magnetic moments per unit of volume, so it is the volume of the magnet that determines magnetism. If an object has great weight and volume, the magnetism will be stronger. If an object has a great weight but lesser volume, the magnetism will be weaker.?æ

Curved magnets, also known as arc magnets, are used for practical applications to produce a strong and focused magnetic field. The curved shape allows for a more concentrated magnetic field in a specific direction, making them ideal for applications requiring rotational effects, such as in electric motors or generators. The curved design also helps optimize the magnetic flux to improve efficiency and performance.

Not all fans do need a coil and magnet - there are hand fans, punkah walla fans belt driven fans (as in your car) and Stirling engine fans that I can think of that do not need a coil or a magnet. It is only electrically driven fans that require a coil and magnet because they work on the principles of electromagnetism.

Yes, a magnet can change its domains by being exposed to high temperatures or strong magnetic fields, causing the magnetic domains to align in a different direction. This process is known as magnetic domain rearrangement.

true, if the the magnet is not labeled the north end will always point towards the north pole.

Most people will think that the 2 poles will attract the most number of clips but actually the part which can attract the most number of clips are the sides near the 2 poles

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When two magnets push away from each other, it is called repulsion. This occurs because the magnetic fields produced by the magnets interact in such a way that they repel each other.

If you have a compass or a magnet with the poles marked, you can bring it near the magnet with the missing labels. The north pole on the unlabeled magnet will repel the north pole on the labeled magnet or the north pole on the compass.

No. If you cut a magnet in half, each part will still have a north pole and a south pole.

Scientists have been trying to obtain "magnetic monopoles", pressumably some particle that has a "north charge" or a "south charge", but so far, without success.

No. If you cut a magnet in half, each part will still have a north pole and a south pole.

Scientists have been trying to obtain "magnetic monopoles", pressumably some particle that has a "north charge" or a "south charge", but so far, without success.

No. If you cut a magnet in half, each part will still have a north pole and a south pole.

Scientists have been trying to obtain "magnetic monopoles", pressumably some particle that has a "north charge" or a "south charge", but so far, without success.

No. If you cut a magnet in half, each part will still have a north pole and a south pole.

Scientists have been trying to obtain "magnetic monopoles", pressumably some particle that has a "north charge" or a "south charge", but so far, without success.

B

'Magnetic North' is so-called to distinguish it from 'True North' -it has nothing whatsoever to do with describing its magnetic polarity.

The poles of a magnet and, therefore, a compass needle, are named after the directions in which they point.

Since unlike poles attract, the magnetic polarity of Magnetic North must be a south pole.

no

The switch you are referring to is likely a reed switch. It consists of two thin metal reeds encased in a sealed glass tube. When exposed to a magnetic field, the reeds are magnetized and attracted to each other, closing the switch and completing the circuit. Reed switches are commonly used in various applications such as proximity sensors, alarms, and reed relays due to their simple and reliable operation.

Magnetic energy can be converted to mechanical energy through the use of a system called a magnetic motor. In a magnetic motor, the interaction between magnetic fields generates a force that causes movement. This movement can be harnessed to perform mechanical work, such as turning a shaft or driving a load.

The permanent magnets in a stereo speaker are used to create a magnetic field that interacts with the electrical current flowing through the voice coil attached to the speaker cone. This interaction causes the voice coil to move back and forth, pushing and pulling the cone to produce sound waves. The permanent magnet near the cone provides a stationary magnetic field, while the magnet on the cone moves with it to drive the sound production.

A magnet is an object that produces a magnetic field and attracts materials containing iron, nickel, or cobalt. Magnets have two poles, north and south, which attract or repel each other depending on their orientation. The magnetic force between the poles is strongest at the ends of the magnet.

temporarily magnetic

No, not all types of steel are magnetic. Stainless steel, for example, contains a high amount of chromium and is generally not magnetic. On the other hand, carbon steel, which typically has a higher iron content, is usually magnetic.

The two areas are the North Magnetic Pole and the Geographic North Pole. Compasses will point toward true north at these locations because they align with the Earth's axis.

the current from the battery controls the strength of the electromagnet. Adjusting the voltage will also adjust the current as will adjusting the resistance in accordance with Ohm's Law. Current= voltage/resistance

Yes, magnetic minerals occur naturally in the Earth's crust. Some common examples include magnetite, hematite, and lodestone. These minerals contain magnetic properties due to the alignment of their internal atomic structure.

Magnets have domains of aligned magnetic moments, resulting in a macroscopic magnetic field, which is not present in non-magnetic materials. Additionally, magnets exhibit magnetic hysteresis, the ability to retain magnetic properties after being magnetized, which is absent in materials lacking magnetism. Lastly, magnets can attract or repel other magnets or magnetic materials, a behavior not seen in non-magnetic materials.

Magnets are typically composed of materials such as iron, cobalt, and nickel. These materials have aligned magnetic domains that create the magnetic field of the magnet. Other materials like neodymium and samarium can also be used to create strong permanent magnets.