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What pattern of striping at a mid ocean ridge would you expected find if the magnetic polarity changed many times over a short period?
If magnetic polarity changed many times over a short period at a mid-ocean ridge, you would expect to find a complex pattern of striping on either side of the ridge. Instead of the typical symmetrical, alternating bands of normal and reversed polarity, the stripes would appear irregular and fragmented, indicating rapid and multiple reversals. This chaotic pattern would reflect the tumultuous geological activity in the area, complicating the interpretation of the magnetic history. Overall, the striping would likely be less distinct and more varied than in areas with more stable magnetic reversal timelines.
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Why hard disk is magnetized by iron oxide?
Hard disk drives use a magnetic coating of iron oxide to store data because it can be easily magnetized to represent binary data (0s and 1s). The magnetic polarity of the iron oxide particles can be changed by a magnetic head, allowing data to be written and read from the disk.
Does the polarity be changed in an iontophoresis treatment?
Yes, the polarity can be changed during an iontophoresis treatment. Iontophoresis involves the use of electrical currents to drive charged ions into the skin, and the polarity of the electrodes can be switched to alter the direction of ion movement. This allows for the delivery of different medications or therapeutic agents, as positively charged ions are repelled by the positive electrode and attracted to the negative electrode, and vice versa for negatively charged ions. Adjusting the polarity helps optimize the treatment for various conditions or substances.
Can the polarity of gasoline be changed with magnets?
Because the molecules in gasoline are inherently non-polar, it takes an extremely strong magnet to cause any polar effect on them. Even the electromagnets used on cranes to pick up junk cars and move them around in junk yards are not strong enough to change the polarity of gasoline noticeably. Any magnet strong enough to induce a noticeable polarity in the molecules in the gasoline would have a catastrophic effect on the metal moving parts of the engines it is burned in and as soon as the gasoline was removed from the magnetic field of the magnets it would revert to its normal non-polar state. Magnets cannot induce any permanent change in the polarity of gasoline. As a caveat - a little bit of polar materials are often added to gasoline to aid in complete combustion and to impart some engine cleaning properties to the gasoline, but even those molecules are not very much affected by anything short of extremely strong magnetic fields, albeit not quite as strong as are required to affect non-polar molecules. No magnet you could fit under the hood of a car would be strong enough to have any noticeable effect on the gasoline - the only effect you could hope to see would be to have a magnet messing up the movement of the metal parts of the engine.
Describethe ways you can change the polarity of the molecule?
The polarity of a molecule can be changed by altering its molecular structure or the distribution of its electrons. This can be achieved through the introduction of electronegative atoms, such as chlorine or oxygen, which can create dipoles. Additionally, changing the geometry of the molecule, such as shifting from a linear to a bent shape, can affect how dipoles interact and thereby change overall polarity. Lastly, modifying the functional groups present can also influence the molecule's polarity.
How can the magnetic flux associated with coil or a closed circuit be changed?
A simple method for altering the magnetic flux would be to change the amount of current flowing in the coil or circuit. Generally speaking, more current, more magnetic flux, and vice versa.
How many times has earth's magnetic polarity changed?
The Earth's magnetic polarity has changed multiple times throughout its history. These changes, known as geomagnetic reversals, have occurred hundreds of times over the past 100 million years.
How were scientists able to use rock on the ocean floor to determine that the Earth and magnetic field has changed direction?
Scientists studied the alignment of magnetic minerals in oceanic rocks to determine that the Earth's magnetic field has undergone reversals in polarity. By analyzing the magnetic "stripes" on the ocean floor, they found alternating bands of rocks with normal and reversed polarity, suggesting that Earth's magnetic field has changed direction over time.
How often does the earths magnetic field change polarity?
The Earth's magnetic field has changed polarity hundreds of times in the geological past. This phenomenon is known as geomagnetic reversal. The frequency at which these reversals occur is not regular, but on average, it is estimated to happen every few hundred thousand years.
Which happens to the magnetic field of a wire when you change the direction of the current in the wire?
The magnetic field direction around the wire reverses when the direction of the current in the wire is changed. This is due to the right-hand rule that states the direction of the magnetic field is perpendicular to the direction of current flow.
What is changed by flipping the direction of electrons in an electromagnet which is controlled by the commutator?
Flipping the direction of electrons in an electromagnet controlled by the commutator changes the polarity of the magnetic field generated by the electromagnet. This reversal in polarity affects the direction of the force experienced by the electromagnet in relation to other magnetic fields or conductors it interacts with. It is a key mechanism in the operation of electric motors and generators.
Why hard disk is magnetized by iron oxide?
Hard disk drives use a magnetic coating of iron oxide to store data because it can be easily magnetized to represent binary data (0s and 1s). The magnetic polarity of the iron oxide particles can be changed by a magnetic head, allowing data to be written and read from the disk.
Is it true that the earths magnetic field always stayed the same?
No, the Earth's magnetic field is not constant and has changed in strength and direction over geologic time. This phenomenon is known as geomagnetic reversal, where the magnetic north and south poles switch places. The Earth's magnetic field is influenced by processes in the planet's outer core, so changes are to be expected over time.
What would happen to electronics magnets etc if the earths magnetic poles changed?
Nothing - The polarity of an electromagnet depends on the direction of current flow and you can effect the same change in orientation to the earth's field by moving the electromagnet rather than the earth's field.
Why are permanent magnets not used in cranes to lift heavy loads?
They can become demagnetized by impact, if they're picking up something which is also magnetic (which steel is), the magnet would need to be changed when the polarity was wrong, and then there's the matter of how you detach the magnet once you got the load into place.
How can scientists tell if the earths magnetic field has changed?
Sediment cores taken from deep ocean floors tell scientists about magnetic polarity shifts which provides a direct link between magnetic field activity and the fossil record . The Earth's magnetic field determines the magnetization of lava as it is laid down on the ocean floor on either side of the Mid-Atlantic Rift where the North American and European continental plates are spreading apart . When the lava solidifies it then creates a record of the orientation of past magnetic fields much like a tape recorder records sound .
In an electromagnet why is changed by flipping the direction of the electrons which is controlled by the commutator?
Changing the direction of the current in the electromagnet by flipping the direction of the electrons through the commutator changes the direction of the magnetic field generated by the electromagnet. This is because the magnetic field produced by a current-carrying wire is directly related to the direction of the current flow. By reversing the current direction, the polarity of the magnetic field is also reversed, which allows for control over the attractive or repulsive forces exerted by the electromagnet.
What happen when you change the direction of current in an electromagnet?
If you change the direction of current in an electromagnet, (which by the way is just a coil of wire) then the direction of the magnetic field will also be reversed: That is to say, what was north is now south. If you want more info. look up "the left hand rule".
