The ones in hotels and motels do. They are basically the same magnetic stripe card as a credit or debit card.
The power needed to levitate a particular mass using magnetic levitation depends on the strength of the magnetic field, the distance between the magnets and the object, and the speed at which the object is moving. This can be calculated using the formula: Power = Force x Velocity. The force exerted by the magnetic field and the velocity at which the mass is being carried are key factors to consider in this calculation.
The force that operates when using a bar magnet to pick up a paper clip is magnetic force. The magnet attracts the paper clip due to the magnetic field surrounding the magnet, pulling the paper clip towards it.
Some examples of magnetic energy transfer include the use of magnetic fields in transformers to transfer electrical energy, magnetic resonance imaging (MRI) to transfer energy for imaging purposes, and magnetic levitation trains that use magnetic fields to transfer energy for propulsion.
Magnetic Forcenounattraction for iron; associated with electric currents as well as magnets; characterized by fields of force [syn: magnetism]
You can use a device that detects magnetism. A compass needle may suffice.
Magnetic Force (obvious):)
it uses electric force
The magnetic force of the Earth's gravity holds the Moon in it's orbit.
A key card - is a security device. It's normally used to restrict who can access certain parts of buildings, or computers. It consists of a plastic card about the size of a credit-card, which has data embeded on a chip or magnetic strip. The card is either inserted into or swiped across a card-reader - if it's valid, access is granted. Key cards areusually combined with passwords - in case the card is lost or stolen.
To determine the direction of the magnetic force, you can use the right-hand rule. Point your thumb in the direction of the current, and curl your fingers in the direction of the magnetic field. The direction your fingers point is the direction of the magnetic force.
The data stored on a credit or debit card is stored not only in the metallic chip - but also on a magnetic strip on the rear of the card. Magnetic card readers read the data from the strip on the card, instead of the embedded chip.
Whether or not you use it, there's always a magnetic field surrounding an electric current.When anything that can respond to a magnetic force is brought close enough to the current,it does feel a magnetic force.
To determine the direction of force in a magnetic field, use the right-hand rule. Point your thumb in the direction of the current, and your fingers will curl in the direction of the magnetic field. The force will act perpendicular to both the current and the magnetic field.
To stop or divert magnetic lines of force, you can use magnetic shields made of materials with high magnetic permeability such as iron or steel. These materials can redirect or absorb magnetic fields, preventing them from reaching a certain area. Alternatively, you can use electromagnetic coils to create opposing magnetic fields that cancel out or weaken the original magnetic field.
To find the direction of magnetic force in a given scenario, use the right-hand rule. Point your right thumb in the direction of the current, and curl your fingers in the direction of the magnetic field. The direction your fingers point is the direction of the magnetic force.
You can determine if a magnetic force is present by observing the effect it has on nearby magnetic materials, such as attracting or repelling them. Another way is to use a magnetic compass, which will align itself with the magnetic field lines if a magnetic force is present.
Yes. That's how the navigator of an airplane in flight is able to use a magnetic compass.