what happens when poles change polarity?
463009
They realise they should have turned right at Warsaw.\n\nSeriously, it would result in enormous climate changes, tectonic plates could be affected resulting in earthquakes, harmful radiation from the sun could seep through - the Earths magnetic field behaves like a shield, hence the northern lights. \n\nPolarity changes have happened before on Earth and scientists believe we are overdue for another one.\n\nSo, something else to add to the list of 'Armageddons' we seem to have stacking up against us. No point worrying really, if one catastrophe doesn't get you, then another one will!
835678
Pole shift.\n As used in this article, a pole shift refers to a relatively sudden change in the location of the imaginary piercing point of Earth's rotation axis at the surface of the globe. Such a shift is brought about by differential movement between the Earth's crust -- and including some (or all) of the material of the mantle -- with respect to the deeper layers of our planet. It is these deeper layers whose mass and momentum govern planetary rotation. This type of shift has profound implications for the redistribution of centrifugal forces over Earth's surface, and for sea-level changes worldwide, new distributions of land and sea areas, and extreme geotectonic events.\n\nRead about the Three Types of Pole Shift here:
673529
north and south poles
504081
You cannot run polarized electrolytics backwards, without destroying them. You can find dozens of different non-polarized types on-line from parts distributors such as Mouser, Allied, and Digi-Key. But if you want to get around the problem, there's still another way; Place two standard polarized electrolytics in series, "back-to-back" so that their negative terminals are connected to each other. Then, place a rectifier diode, such as a 1N4002, in parallel with each capacitor, so that the cathodes are in contact with the positive capacitor terminals, and the anodes are in contact with the negative capacitor terminals.  What you will have now made is a "bipolar" or "non-polarized" capacitor that is roughly equivalent in value to one of the two original polarized capacitors!  If, for example, both of the electrolytics were rated at, say 2200 MFD @ 25 VDC, the new "homebrew" NP capacitor will function as a 2000 MFD, 25VAC capacitor!  Reversing polarity on this "home brew" capacitor will not cause any problems, whatsoever!
986380
It will align with whatever magnetic field it is closest to or align itself on a piece of metal. If it isn't close to either of these, it will point in any random direction.
61280
If you've ever seen a bar magnet in a pile of iron filings, you'll see that the filings will orient themselves with the magnetic field, which concentrates at the poles.  Take a look at the images in the links.  The world is similar, in that it has a magnetic polarity that makes it work like a big magnet.\n\nIonized particles fly off the sun and out toward the planets (the so-called "solar wind").  An ionized particle has a charge, and a charged particle will turn when it moves through a magnetic field.  So when these charged particles encounter the earth's magnietic field, they will begin to spin in a sort of coiled-shaped path.  The spinning stops the ions from just smaking into the earth directly, so instead it will trace the length of the magnetic field, getting dragged towards one of the poles.  As the ions cluster at the poles, one of two things might happen: it might coil so tight that it switches directions, sort of "bouncing" and making the long trek to the other pole, or it might cascade down to earth.  Those which cascade to earth will strike gases in the upper atmosphere with a lot of energy, which can cause the gases to become energetically charged.  When they release the energy, it comes out as light (pretty much the same principle as in a fuorescent light).  Due to the differences in the speed of the ions, or the differences in the types of gases encountered, the light will have different colors.\n\nThis also happens at the south pole (the other end of the magnet) in what is called Aurora Australis (the southern lights).
1029021
Depends how it happened. If it switched off then back on again in the other direction we'd all fry from solar radiation. Plus all our electronics would stop working. If it just rotates....well....birds'll get lost, compasses will need recalibrating, but apart from that very little.\n\nThe interesting thing is, we don't know which is going to happen, just that one of them will!
828980
Depends on what the amplifier is configured as. Integrating, differentiating, ect. But a non inverting amplifier output will have the same polarity as the incoming signal in general.
405955
If you are reflecting across the y axis, x becomes -x.\n\nIf you are reflecting across the x axis, y becomes -y.\n\nIf you are reflecting about the origin, both x and y change sign.\n\nIs that what you are looking for?
786962
If the molecule has O,N,F,or Cl then most likely it is polar.  Look at the periodic chart and remember that the elements in the upper right are the most electronegative, so they want electrons.  When these elements are in a compound with other atoms such as C and H they will pull electrons closer making a dipole moment.  \n\nThe only real trick is looking at the geometry of the molecule, if there is more than one electronegative atom pulling in opposite directions then the dipole is canceld.  Such as O=C=O which is liniar.\n\nLook at an electronegativity chart you will see what I mean
529884
When a current is applied to a coil of wire, that coil of wire produces a magnetic field.  When this coil is then placed in the magnetic field of a standard permanent magnet the two field interact.  The fields interact in much the same way as when you place two permanent magnets together.  They will either repel or attract each other depending on the orientation of the fields to one another.  If we were to attach a stryofoam cup (diaphragm) to this coil of wire (voice coil) and change the polarity of the current in the wire, the coil and attached cup would move in or out.  The faster we change the polarity, the faster the cup will move in and out, and the higher the pitch of the sound created.  The more current we use, the louder the sound will be.
264525
This is what i found on the site noted below:\n\n"There are two ways of considering what is meant by a pole shift:\n\n   1. A geological or axial shift in which the Earth’s crust literally slips around its molten core – like a loose peel on an orange – altering the positions of land masses with respect to the planet’s rotation on its axis. This could happen by a few degrees or by many degrees. Antarctica could wind up at the equator and Miami could be the new North Pole. The effects on our civilization could be devastating.\n\n   2. A shift of the magnetic poles only. As it is, the Earth’s magnetic north (the north that compasses point to) is not exactly the same as the true North Pole. This magnetic pole is not fixed and can move. In fact, scientists are fairly certain that it has shifted by as much as 180 degrees several times in the past. This change may be sudden or it may be gradual, taking place over hundreds or even thousands of years. The effects on life on the planet would probably be minimal, affecting perhaps the migratory or homing instincts of some animals.\n\nSo what about it? Is a pole shift really possible? According to A Pole Shift is the Least of Our Worries, an axial shift is possible, but “only if another planetary body – such as a ‘rogue planet’ or similar cosmic anomaly – passed in close proximity to the Earth, providing enough torque for such an event to occur.”\n\nMore likely is a magnetic shift of the poles, although there is no scientific expectation that it will happen anytime soon. But it has happened more than 180 times before, as detected in the paleomagnetic record of rocks on the ocean floor and in some lava flows. These magnetic reversals take place every 100,000 to 25 million years, according to Scientific American, and may take as long as 5,000 years to do so.\n\nSo don’t let all of this millennium madness ruin your plans for your New Year’s celebration... or your Fourth of July holiday."
495285
It's going to be one or the other, it doesn't change during function.\n\nThe junctions are determined when the transistor is manufactured, it's part of the physical structure of the device, so it's polarity does not change.
415440
r decreases becuase the ellipse is becoming thinner i think that would happen\n\nhope u find out if my answer is wrong GOOD LUCK!!!!!!!!
228873
A dipole (Greek: di(s) = double and polos = pivot) is a pair of electric charges or magnetic poles of equal magnitude but opposite polarity (opposite electronic charges), separated by some, usually small, distance. Dipoles can be characterized by their dipole moment, a vector quantity with a magnitude equal to the product of the charge or magnetic strength of one of the poles and the distance separating the two poles. The direction of the dipole moment corresponds, for electric dipoles, to the direction from the negative to the positive charge. For magnetic dipoles, the dipole moment points from the magnetic south to the magnetic north pole — confusingly, the "north" and "south" convention for magnetic dipoles is the opposite of that used to describe the Earth's geographic and magnetic poles, so that the Earth's geomagnetic north pole is the south pole of its dipole moment. Because of the absence of magnetic monopoles, magnetic dipoles are actually created by current loops or by quantum-mechanical spin.
35729
Polarized in a vertical plane
141095
A magnetic field has a north and south polarity. Gravitation is mostly the same every where on Earth.