Does newtons law of grvavitation holds good for 2 magnets??
602422
They are not equal. They variates both over the inverted squared distance, but the gravitational force is F=(m1*m2)/μ*r^2 (F is force, m is pole strength, μ is the permeability of the intervening medium, r is the separation) and the gravitational force is F= -G*(m1*m2)/r^2 (G is the gravitational constant, m1 is the mass of the first object, m2 is the mass of the second object, r is the distance between objects). Indeed, those two forces have similarities in the formula, but they are distinct.
1045950
Electromagnetism and gravity. I have had success divining for water. Try it: Take a steel coat hanger and cut the long side in half. Make a cut on the other 2 sides  that same length. Bend until you have 2  L-shaped pieces. Stroke one side of each  L with a good magnet. Hold both pieces lightly as if you were holding 2 pop cans, tilting slightly away from you. As you walk over a water source, water table, well or buried pipe the two L's will move to point to each other. Use caution, this also works to locate underground live power lines.                        The REASON this works is that everything in our physical environment has an energy level. When there is a difference in density or materials, then resistance is created and this can be electromagnetic resistance. Underground water is electrically conductive and carries a faint electromagnetic charge that the magnetic "L's" tend to align with. I hope that explains it better, I'm glad you were able to find a good spot for your well.
823892
In this reference, http://en.wikipedia.org/wiki/Magnets near the end of the article there is a formula for the force between bar magnets very close together.  You wll need to know the magnetic field strength of the magnet.  Also, for sliding, you will need to know the coefficient of friction.
1055969
The formula for attraction between two electromagnetically charged particles is:\n\n(Charge #1) * (Charge #2)\n______________________\n        distance squared\n\nThis means this means that doubling the distance decreases the force by a factor of four.  Your answer is correct.
478897
Yes if sufficient force is applied the force of impact will negate the magnetism. This is because the charged particles (electrons, neutrons, protons) will collide and confuse the flow of energy. Unless you have an elctromagnet then the magnetism will survive.\n\nSometimes if you drop a compass you will also make it useless as they are also magnetic
118764
Newtons 2nd Law,\nForce = mass * acceleration\n\nIf you have two masses (m1 & m2) that accelerate at the same rate,\nF1 = m1*a --> a = F1 / m1\nF2 = m2*a --> a = F2 / m2\n\nset both acclerations equal to eachother, solve for the ratio,\nF1/m1 = F2/m2\nF1 = F2 * m1 / m2 --> F1/F2 = m1/m2\n\nSo the ratio of Force 1 (F1) to Force 2 (F2) must equal the ratio of mass 1 (m1) to mass 2 (m2) in order for both to accelerate equally.
177575
If the fluid is brought to a rest by the beam then the drag coeff Cd is one.\nhttp://en.wikipedia.org/wiki/Drag_coefficient\n\nThis paper seems relevant to your calculations.\nhttp://www.artificialreefs.org/ScientificReports/CancunHotelRBstability.htm
574012
I've alread answered two of your questiions in my last answer....\n\nIn this one, the guys above are correct - however, I'd try working it out for myself if I was you. Your tutor will soon realise something is wrong if you are giving answers to a subject you don't understand. Read the chapter, ask you teacher if you need more help. Learn Newtonian mechanics for yourself.
975911
First of all, I'm not professional of physical. I don't know at all, but Iron and steel are really high permeability, and strongly attract to magnet. Seem like the steel bar would tell you which one rely force electron. I don't think Iron has any thing to do with steel.
789773
let us understand it in a simple way:\n   Suppose you have a magnet as shown below:\n                                [ N ]\n                                [ S ]\n\nBy cutting the magnet centrally, if you  mean cutting it vertically, then we would obtain the following configuration after cutting the magnet:\n                              [N] [N]\n                              [S] [S]\nThat is to say we have resulted in two magnets with polarities as shown above.Now as we all know that like polarities(N-N, S-S) repel and unlike polarities(N-S,S-N) attract, the result follows that the two magnet in above configuration repel each other while they attract when one of them is rotated by 180.\n[When one of the magnet is  rotated (say the second one) the following configuration results:\n                            [N] [S]\n                            [S] [N]\nand hence the result.]
1045884
http://en.wikipedia.org/wiki/Magnets\n\ngo there if u wanna find out, i only know simple version...
484193
You mean 2 P of a M which is 2 poles of a magnet.
408403
Magnetic forces, electric forces are bi-polar: there are North and South poles on magnets, as well as positive and negative charges. As a result the forces can be attractive or repulsive.\n\nGravity is mono-polar in the sense that the force between two masses is always attractive.
414734
bring the magnets close to each other. If u feel any repulsion, that means u have tried joining opposite poles.\nWith this test u just come to know of the repulsive and attractive sides relative to a magnet. No qualitative nalysis of which is North pole and which is south cannot be done! But hey! If the bar magnet is painted red on one side, then that would be the north pole!
708470
Physics does not describe magnetic monopoles;\nonly dipole with a north pole and a south pole.\nWhen you break an iron magnet, you have two magnets.\n\nTh
674108
The poles of any magnetized item will be at the extreme opposite points...in other words the positive will be as far as it can get from the negative.  In the case of a sphere this would be "top" and "bottom" not core and perimeter.  (Think of the Earth's magnetic poles!).
1045984
No one knows the answer to that. However, matter seems to cause a "dent" in space. The greater the mass of this matter, the greater the "dent" it creates. Other matter (with less mass) gets influenced by matter with larger dents. This causes small matter to orbit and free fall toward big matter.\n\nHowever, is this "dent" magnetic or electric? No one knows. However it is a fascinating thing to ponder!