How to do a 3-D model ofsea floor spreading?
365201
here is a cut out model\n\nits quite a way down the page, you need a shoe box.
593602
The answer is to draw an outline of the box and sketch all forces acting upon it.\n\nThen, resolve those forces into their horizontal and vertical components.\n\nThe box is not required to accelerate in order for constant-velocity motion to occur.  So, it is simpler than F = ma.  Just use Sum (F horizontal) = 0, and sum (F vertical) = 0.\n\nSolution:\n\nSum of horizontal forces:\n\nF - 0.3 * N * cos(12) * N * sin (12) = 0\n\nSum of Vertical forces:\n\n- mass * gravity - 0.3 * N * sin(12) + N * cos(12) = 0\n\nBe careful with pounds as a unit of mass.  Better to convert to slugs by dividing by 32.17 ft/s^2 (gravity).\n\nFirst solve for N (the normal force perpendicular to the plane acting upward on the box) using the vertical force eqn:\n\n-(35/32.17) * (32.17) - 0.3 * N * sin(12) + N*cos(12) = 0\n\nThen plug N into the Horizontal Force sum equation to solve for F.\n\nWatch your units!
114649
Here's an idea.  Show them something that's pretty much flat and rectangular, such as piece of stiff carpet or a pad of paper.  Write on the board what the perimeter, area, and volume are.  Have them measure it with a tape measure and come up with the answers that you have.  They'll see that they just have to add for the perimeter but multiply for the area and volume.
611169
Base area x height of water.
1024555
A quick test is to set it on a "level" surface. See where the bubble is and then turn the level 180 degrees. the bubble should show the same degree of level. \n\nWith a precision level there are usually multiple marks rather than just two so you should be able to see even a minor lack of levelness on a surface and that should be repeated when you turn the level 180 degrees.\n\nI do the same thing with my cheap carpenters level when I use it to be sure it isn't out of whack.
712075
Calculate the perimeter of the pile, multiply by the thickness of the raft (assuming it is made of concrete or equivalent solid material) to give the area that resists shear.  Divide the design tension of the pile (or the compression in case of low tide, if applicable) by the above area that resists shear to give the theoretical shear stress.\n\nThis is the basic theory behind it.  \n\nYour local building code should give more details.  For example, the circumference may be increased according to the thickness of the raft, and so on.\n\nIf you are not experienced with these calculations, you may want to have someone experienced and competent to check it, because any failure may involve a lot of money, and/or lives.
912617
P=P(0)*exp(-1.1e-4*H)\n\nP(0) is the pressure at sea level. Note it's temperature dependent and it assumes a stable Boltzmann type distribution.
402451
this feat was done in the marianas trench at 6033.5 fathoms deep. see this website!! it has a lot more info than i can provide you with :)\n\nwww.marianatrench.com
1044728
The foci of earthquakes at transform boundaries tend to be at shallow depths.\n\nSee source.
874727
You need to sum the components. Let Fr, Fl, Fu, and Fd be to right, left, upward, and downward directed forces, respectively. Then\n\nFx = Fr - Fl\n\nand\n\nFy = Fu - Fd.\n\nThe right and upward directions are taken as the positive direction so that the minus sign indicates that the forces (Fl and Fd) are directed to the left and downward.\n\nThe magnitude of the resulting force is then computed as\n\nF = sqrt(Fx^2 + Fy^2)\n\nand the direction can be found from\n\ncos(q) = Fx/F\n\nUse some reasoning to be sure that the direction you compute is consistent with the orientation of the force components.
566230
Set up the equation\n\nP = dRT\n\nAssuming P to be constant,\n\ndT = d'T'\n\nor d' = 0.76*273/298 = 0.696 g/l.
151606
if all the lines are equal in every way (duplicate) then you can put a measurment (dimension) from the existing line to a datum or border whichever you choose and then put a callout like 3@12.00' (3 lines at 12.00 feet)in the dimensionwith a arrow pointing at the line.\n\njeff
1999
Landmark Graphics Corporation and 4th Wave Imaging released ProMAX 4D, a suite of innovative processing technologies that improve 4-D seismic images. You can check out this site for more info:\n\nhttp://www.halliburton.com/news/archive/2002/lgcnws_100802.jsp?printMe
214692
Slickenlines will give a direction of slip, but as you have probably thought out, that still has two possible interpretations. It isn't always easy, but there are several things you may observe that will help.\n\nSlickensides will also develop a series of small steps that show the sense of movement. These are somewhat perpendicular to the fault movement and the steps will be the trailing edge of the movement direction. \nHere is a picture, where the top (missing portion) side moved to the left. \nhttp://www.geo.cornell.edu/geology/class...\nHere are several other illustrations of these steps:\nhttp://www.geo.cornell.edu/geology/class...\n\nDrag folds will also help you determine the sense of movement. These folds are distortions of the bedding due to shearing along the fault. They are convex toward the direction of slip, with the exception of rollover anticlines along listric normal faults. To describe it another way, the shear will form a 'cup-like' pattern near the fault in the bedding, the bottom of the 'cup' will point toward the direction of movement. If on the upper side of the fault your 'cup' points downward, it should be a normal fault, and if this 'cup' points upward on the upper side of the fault, it is likely a reverse fault. \n\nUsing stratigraphic layers will often not get you much further than the slickenlines, giving you two possible directions. But, in some outcrops you can look at the topmost part of the fault and also see some evidence of the sense of movement by observing the most recent deposition or the thickness of the soil layer over the fault blocks. Where the fault blocks have been eroded away equally on both sides this may not help. \n\nIn other instances you may have to do more mapping and examine other faults in the area before you can make a conclusion. If you know the area is extensional, then you have a hypothesis to work with. The best idea is to always check as many kinds of evidence as you can find before you make a conclusion.
149009
Go to thise website and watch the video. It will give you a good idea on how it is done.\n\n\nhttp://www.piercology.com/albums/album08/navel1_vo.mov
548733
Pressure increases with depth ,each 10 meters 1 atmosphere\nto calculate the pressure for a certain depth use the formula.\nPa= (depth/10)+1\nwhere Pa is the pressure\nExample at 20 meters\nPa= (20/10)+1\nPa= 2+1= 3 Atmospheres
152907
Use a mouse pad, make sure its on a level surface.