what determines the way water gos down plug hole ?
356086
it depends whether u live north or south of the equator. the culprit is called coriolis force. it is proportional to omegaXv where omega is the eaths angular momentum. since its a cross product and v is different in north and south. the direction (clockwise or anti) is thus different.
552084
I assume this is based on the principle of Osmosis. I would like a bit more data before answering further.
512823
I'm not quite sure what you mean: distance between hole and surface.  Surface of what?\n\nHere is the scoop though: Holes that are closer to the bottom of the container, and therefore farther from the surface of the water, do yield a faster rate of flow.  As the hole moves closer to the surface of the water, the rate slows down.  \n\nThis is of course due to pressure of a fluid.  The deeper you are, the more pressure there is; therefore, the water is pushed out at a faster rate when the hole is farthest from teh surface.
1018827
It will depend on the water pressure and the size of the orifice of the sprinkler head.
356407
find a mountain, hill, or other land area that is elevated, that collects water.\n\nDig a trench, or path, so the extra water flows through it.\n\nMake sure the path you dig goes into another body of water, like a pond, lake, or other water area.
1129951
When it rains, it can do one of two things... be absorbed into the ground OR runoff into low-lying areas.\n\nSeveral factors can determine whether rain will become groundwater or runoff.\n\n1.)Type of soil - sandy soils are more porous and allows water to pass through more easily than those such as clay soils. Therefore soil type will determine drainage.\n2.)Type & amount of vegetation - Vegetation can either allow runoff by inhibiting drainage or can allow for the slow down of water movement which would allow it to be absorbed. It just depends on how much & the type.\n3.)Slope/steepness of an area - steeper areas are more likely to lead to runoff rather than absorbtion.\n4.)Ground saturation levels - if the ground is already saturated w/ water it will not hold anymore & will lead to runoff.\n\nDepth can be determined by...\n1.)Depth of bedrock or basement rock - This could be a nonporous/impermeable rock which just means that it won't allow water to move through. If the bedrock type won't allow drainage then that is where the water will stop.\n2.)The depth of the water table - if the water table is deeper, then the deeper the water will have to travel before reaching it.
444674
if you drop something in the water, it displaces water, and that displaced water moves other water, the rock going down in teh water pushes some up, which then pushes some down, and so on and so on.
424906
Usually when the waste pipe goes outside the building there is a T piece, one branch travels downwards towards the sewer network, the other heads to the roof for natural ventilation and to ease pressure build up. So when the wind blows across the top of the open vent it will slightly affect the level of water in your toilet bowl through pressure displacement.
962570
It will flow in either direction if the voltage is above 0.7 volts
322179
From SPACE.COM:\n\nBack home, all of this has almost nothing to do with your bathtub drain, which creates another spiral shape.\n\nThere is a popular myth, though, owing to the rotational direction of a hurricane, that says the water in bathtubs rotates a certain direction in the Northern Hemisphere.\n\nIt's not true.\n\nThe Coriolis effect does not determine which way the water swirls in your house. The effect is too tiny to impact such a minor, localized process, all experts agree.\n\nThat means water is free to swirl in either direction in tubs in both hemispheres. Which way it goes is determined by the geometry of a particular basin or, if things are perfectly aligned and balanced, then by chance.
185952
a diode blocks current from flowing in a certain direction. current will flow from the non striped side to the striped side
194795
it keeps water away from the contact with the ground
68065
It's due to the rotation of the Earth - specifically the Coriolis Effect. See http://answers.yahoo.com/search/search_result?p=Coriolis+Effect\n\nMy answer assumes you have a circular toilet which drains right down the middle and recieves no directional impulse from the water flowing in ;-). ie. Under strict controlled conditions, you can make water spin in opposite directions as it drains through a hole.
236840
The canals I've seen around here are U shaped with a wide and flat bottomed u as it were...\n\nI would imagine it all has to do with how you did your canal, obviously the middle has to be deeper than the sides so that the water stays in the canal...
420266
Usually underground wires are surrounded by lots of insulation. Plus, the ground itself is an insulator. So even if it does get wet, the power won't go very far. Then there is the fact that a wire is just a wire. Wires do not really short out from water. It is the devices they connect that short out.
227951
Contrary to legend, it depends on the sink - not the hemisphere. The Coriolis force (which makes large scale currents and weather patterns turn clockwise in the Northern hemisphere and counter-clockwise in the Southern hemisphere) is really too small to matter in a sink/toilet. The geometry of the sink and the motion of the water before you pull the plug plays a much larger role.
983162
The force required is the pressure of the water at the leak times the area of the hole.  You are given the area as 0.012 m^2.  \n\nThe pressure of the water is dependent on the height of water above the leak, the density of the water and the acceleration of gravity (9.8 m/sec^2).  \n\nP = density x height x gravity \n= 1025 kg/m^3 x 3.1 m x 9.8 m/sec^2 = \n31,140 kg m/ sec^2 m^2.  \n\nA kg m/sec^2 = 1 N, so this is 31,140 N/m^2.  Multiply this by the area of the hole and you get 374 N.