IS BEING DEMONSTATED
2007-11-04 14:38:04 · 11 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Buoyancy.
Also, hit the CAPS LOCK
2007-11-04 14:40:26 · answer #1 · answered by PSU840 6 · 2⤊ 0⤋
Surface Tension
2007-11-04 14:41:18 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Buoyant stress. The mass of the needle is so small that the buoyant stress of the water on the needle can easily reason the needle to compliment the flow. Edit: all people else's answer on floor rigidity is a ingredient of it. yet whilst that have been the only reason, a penny might pick the flow on water besides. Buoyancy is a greater precise answer.
2016-12-30 19:20:34 · answer #3 · answered by lanahan 4 · 0⤊ 0⤋
PSU840 is right:
Buoyancy
Buoyancy is the upward force that water exerts. It is what keeps ice cubes, which are less dense than liquid water, floating in a glass. Density is the mass of an object per unit of volume, and buoyancy is the ability of water to let objects (or liquids) that are less dense float in it. This is important because it provides physical support in aquatic environments. The fish and other organisms have developed structures based on the fact that water reduces the pull of gravity. This also minimizes the need for large supporting structures in order to move around. Organisms move through water differently than they move on land, and their outer appearances reflect this. Buoyancy also plays a role in helping animals move vertically. Because these creatures are surrounded by water, they can move in any direction in three dimensions, including vertically. On land, this can only be accomplished with wings or especially strong legs (for short periods of time). Fish only need to develop fins (no need for wings) to take advantage of increased mobility.
Here's a useful link:
http://library.thinkquest.org/04oct/01590/intro/properties.html
2007-11-04 14:45:15 · answer #4 · answered by Tina 3 · 0⤊ 0⤋
Surface tension. Related to polarity. Buoyancy would be a property of the needle, not the water.
2007-11-04 14:48:12 · answer #5 · answered by Suzy Trashmouth, Yeah yeah, Crush 2 · 0⤊ 1⤋
The 'Surface Tension' of water.
2007-11-04 14:41:13 · answer #6 · answered by Norrie 7 · 0⤊ 0⤋
I think that is called surface tension.
2007-11-04 14:41:59 · answer #7 · answered by Anonymous · 0⤊ 0⤋
surface tension
2007-11-04 14:41:06 · answer #8 · answered by paul 7 · 1⤊ 0⤋
Surface Tension, font whore
2007-11-04 14:45:47 · answer #9 · answered by anthony_janjancirca2006 1 · 0⤊ 1⤋
i believe it's surface tension..?
or adhesion/cohesion...not too sure. probably surface tension.
2007-11-04 14:41:56 · answer #10 · answered by sunsetlitesx3 2 · 0⤊ 0⤋