Time period of a thin bar magnet in a uniform field is T. If it is cut into two?
413103
err.. if you are talking time constants (tau) the time constant is inversly proportional to flux density.\n\nThis is if you are talking about capacitance or inductance. A bit hard to tell what you are asking here
179802
If you are looking for the maximum service temperature for a NdFeB magnet it is 150 degrees Celsius. \n\nIf you want to know the Curie Temperature for this magnet, which is the temperature at which the magnet will lose its ferromagnetism, it is 310 degrees Celsius. \n\nHere is a reference chart:\nhttp://www.magnetsales.com/Neo/Neoprops.htm#Physical
463641
see\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/surten2.html#c1\n\n here you can find the answer for your question with MATHEMATICAL EXPLANATIONS.
219785
f(x) = 2 sin[x - pi/3]\n\nI can see that x is not multiplied by another coefficient, so the wave graph is not altered by shrinking or expanding, and thus the period will not change, and the period is still 2pi.(it may be translated to the right by pi/3, but the size will not change)\n\n^_^
785530
Answer D.\n\nThis is the Nernst equation at standard conditions.
721887
1)t= -12    2) x= -8    3) x= 7/5 or 1 2/5
871516
mass of the object\nforce of the magnet in a magnetic field\nthe object's own interference with the magnet
121693
cmon...dont u know basic physics...just calculate the resultant of these 2 forces\nanswer= [(132)^2 + (181)^2]^1/2\nif this makes sense!!
933992
the law states that if a wire with length L carries a current i, then a magnetic field is induced...  the magnetic field b (at a point r away) should be induced.... \n\nthe vector notations like dL (hat) and r (hat) are important because the direction of your induced magnetic field is determined using vecor algebra.... you can use the right thumb rule for that too.... the direction of the induced magnetic field  depends on the direction of your current that pass through the wire...\n\nnotice the magnetic field (look at the formula) is a vector quantity since length vector is crossed to the displacement vector....\n(vector cross vector is vector\nand vector dot vector is scalar)
627856
Assuming the varible for time is t then the damping ratio is equal to, b(t)/{2*sqrt (k(t) * m(t))}
310895
Magnetic flux \nweber: Wb = V s = W s/A = m^2 kg/s^2 A \n\nMagnetic flux density, magnetic induction \ntesla: T = Wb/m^2 = kg/s^2 A
309230
Magnetism is actually a relativistic effect caused by moving charge. Current travelling in a wire has a magnetic field surrounding it. Bar magnets are special in that all the magnetic moments (the magnetic effect of electrons orbiting their nucleii) are aligned. In most materials the moments are randomly aligned and cancel each other out.
131722
OK, so it's a little confusing to me, but apparently the magnetic pole close to the north pole is actually a south magnetic pole.  So for some strange reason, the north pole of a magnet bar will be attracted to the south magnetic pole which is located near the north pole.\n\nNorth poles on a magnet are very easily found.  When you bring a magnet up to a coil, and move the north pole back and forth, you will get a current flow in a particular direction (counter clockwise).  \n\nIf you wish you can create your own magnet.  This way you can decide which end is north, and see which end points north.  You need to pass current in a counter clockwise motion.  Use your right hand and make a thumbs up sign.  Your fingers are pointing in the direction of the current, and your thumb is pointed in the direction of the north field.\n\nBest way is to take a wire and wrap it around a bolt at least 10 times.  Current leaves a battery on the positive terminal and enters the battery on the negative terminal.  Make sure you keep track of the direction of current flow.  Then use the right hand rule I indicated above.  The thumb shows the direction of the north magnetic pole.  I wish I could draw you a diagram.
713269
Faraday's Law!\n\nMass Plated = t * I * MW / (n * F)\n\nt = time\nI = current (Amps)\nMW = mol weight of metal\nn = valence charge of metal\nF = Faraday's Constant (96,500 Coulombs/mol e-)\n\nSo....\n\nt = 2 days * 24 hours/day * 3600s/hour = 172800s\nI = 7.60 A\nMW = 51.94 g/mol\nn = 3 mol e- / mol M\n\nPlug it all in and you should get 235.62g of Cr.
1083571
1) Magnetic field due to a current passing in a circular loop:\n        B=(PIN)/2r where\n  P is the permeability of the medium\n  I is the electric current\n  N is the number of turns\n  r is the radius of the loop\n\n2) Magnetic field due to a current in a soleniod:\n         B=(PIN)/L\n         B=PIn     where\n   P is the permeability of the medium\n   I is the electric current\n   N is the number of turns\n   L is the length of the coil\n   n is the number of turns per unit length\n\nAbout V & B\ni don't know any formulas that contain V & B \n\ni hope i could helped u
408437
1. magnetic field B\n\n2. relativistic mass at double light speed, as you see it's imaginary ;)\n\n10. relativistic kinetic energy\n\ncould only guess about the rest. i hate tensors.
112354
At the "true" poles. True poles are not exactly the end points of a bar magnet (say). You can draw field lines to find out the true poles by finding where these field lines converge.