Liquid Definition and 990 Threads

O.K. HOw much heat is absorbed by a person's hand if steam at 100degree C is first converted to liquid water at 100 degree C and then cooled to normal body temperture? I'm not sure of the formula for this one.

Does anyone know if it is possible use a soil pH meter to measure the pH of liquids (ie. not soil)? Or a better way to phrase it, is there any diference between a soil pH meter and a normal pH meter meant to be used on liquids that would cause inacuracies or other problems if one was...

hi everyone :D i have two questions i have no idea what to do (teacher assigned them after watching a video, though i have no idea still what the video is talking about).. the questions is: 1. Would gravity waves in water be faster or slower on the moon? Explain. i would think that it's...

In the lab for my chemistry class we were doing the density of an unknown liquid using a microliter syringe.We had to fill the syringe with water and then weigh it.Then we had to fill it with the unknown liquid and weigh it again.to make a long story short,one of the questions is can another...

One simple question: why do liquid mirrors assume a parabolic shape when subject to uniform angular motion? (I mean, why not circular, or some other reasonably curved shape?)

In an experiment related to bonding in liquid I was required to stir three liquids: Water, Paint Thinner, and Vegetable oil. Thereby creating a vortex in each liquid and recording the depth of the vortex plus the time the vortex took to disappear. My results where that water produced the deepest...

I was wondering whether anyone could give me a bit of a point in the right direction for a physics assignment I have been given. The Question is: When a droplet of water or other liquid falls on a hot surface, it produces a sound. On what parameters does the sound depend? Any thoughts...

First Problem ---------------- A flat plate moves normally toward a discharging jet of water at the rate of 3 m/s. The jet discharges water at the rate of .1 m^3/s and at a speed of 18 m/s. (A) Find the force on the plate due to the jet. (B) Compare it with if the plate were stationary...

I've been doing a ton of research recently on how lasers work. Basically a laser is actually L.A.S.E.R which stands for "Light Amplified of Stimulated emitted radiation". A laser is cohernet, which means it is only its wavelengths are not fixed. Low power red lasers are often known as...

"A liquid is flowing through a horizontal pipe whose radius is 0.10m. The pipe bends straight up for 10.0m and joins another horizontal pipe whose radius is 0.20m. It was found that the pressure in the lower pipe and the upper pipe were the same. What is the speed in the lower pipe? [An image...

1) First ones just I am curious about what's the relationship between the velocity of a liquid being projected, like out of a hose, vertically and the height it goes. 2) An actual problem: A cylindrical tank .9 m in radius rests atop a platform 6 m high. Initially the tank is filled with...

Please help me with the following: "A liquid is flowing through a horizontal pipe whose radius is 0.0200 m. The pipe bends straight upward through a height of 8.2 m and joins another horizontal pipe whose radius is 0.0410 m. What volume flow rate will keep the pressures in the two horizontal...

I can't solve this problem. Could anyone help me? A piece of metal with a mass of 2kg and specific heat of 200J/kg C is initially at a temperature of 120 C. The metal is placed into an insulated container that contains a liquid of mass 4kg, a specific heat of 600J/kg C, and an initial...

When I was at school, some 15 years ago, I was taught that steam was not a gas. This always seemed a very odd thing to say. I think it was based on the idea that it contains suspended water droplets, but wouldn't any gas have suspended droplets near it's boiling point? I'd like to settle this in...

Can anyone give me a fairly brief explanation of how liquid color displays work, and why they display color, instead of just a lightened color for charged areas, and black for uncharged areas. Lastly, I've no idea why these devices display color, what the liquid is composed of, what physical...

If I have a container, filled with water, and a hole is cut in the side at some distance h from the top, how do I go about finding the distance R from the foot of the container that the stream will impact the floor? Do I use Bernouilli's Equation: P1 + ½ pv12 + pgy1 = P2 + ½ pv22 + pgy2 Where...

Would it be possible that Opticians will be selling to visually impaired people, Contact Lens, made from a material that has a negative index refraction, that theoretically could be altered with a Liquid Crystal "Eye-Drop" solution? Basically how far are we from a Liquid Crystal Contact Lens...

No, I'm not thinking of buying one/any, but how much does one cost?, any type. Plus, how much do the two commonmost types of helium in liquid form, and/or liquid nitrogen, cost per gallon? I know liquid nitrogen is cheaper... a lot. ...If I were to not buy in bulk.

If there is a single atom of water or some substance, can it have the properties of a solid gas or liquid? Or is it a separate state?

A cylindrical bucket of liquid (density \rho) is rotated about its symmetry axis, which is vertical. If the angular velocity is \omega, show that the pressure at a distance r from the rotation axis is P = P_0 + 1/2\rho \omega ^2 r^2 where P_0 is the pressure at r = 0. Isn't depth...

Hi everyone ! Sorry if this has been asked before - I'm too lazy to search through all the topics... Is there any liquid that has all these properties: - isn't corrosive (well, at least for 10 years or so) - doesn't readily react to plastic and commonly-used metals at room temperature...

Well? Is something like a shirt considered a solid, even though it can easily take the shape of it's container?

I am looking for a formula that would relate temperature and solubility of a gas. I know that solubility has an inverse relationship and I also know that as the temperature of water increases from 0 C to around 30 C, the solubility of a gas in the water decreases to about half. Surely...

im wondering in theory couldn't you put so much presure on a gas that the molocules couldn't move therefore creating a liquid or a solid ( i realize this would take a lot of pressure) but would it result in a liquid or no??

You have two cloth ropes. The ropes have non-uniform thicknesses and are of different lengths. You also have a bucket of colored liquid. When you dip an end of a rope into the liquid, the colored liquid wicks through the rope, progressing through it at some non-constant rate. The total wick-time...

Problem 2. Liquid nitrogen, which has a boiling point of 77 K, is commonly used to cool substances to low temperatures. How much energy must be removed from 1.4 kg of gaseous nitrogen at 77 K for it to completely liquefy? Assume the latent heat of liquid nitrogen is 2.01 *10^5 J/kg Answer...

Hya! Me and my friend are planning to build a rocket for our exam project. We're pretty sure going to use some kind of solid fuel, black powder most likley. It's going to bee great. :biggrin: Now, my question is, do anybody know if there is someone who have built and flown a small liquid...

An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which the heater is immersed. If the current in the hearter is I, the thermal energy trasferred to the liquid in time t is? 1) IRt 2) I^2Rt 3) IR^2t 4) IRt^2 5)...

Does anyone know of any type of liquid that will not dissolve any type of salt (or anything in salt water for example), and is not able to mix with water, that is also non-conductive?

Hello, Could anyone tell me what assumptions are made about conditions in the derivation of Stokes' law ( F = 6(pi)(eta)rv )? Also, how is the Ladenburg correction for motion in a fluid derived from/related to this? I have searched high and low on the net and in libraries, but I'm not coming up...

are they solid/ liquid? bulk modulus or shear modulus to be used?

My friend and I have a lot of ideas for liquid nitrogen experiments (and we will be safe! :)), but we have no idea where to order it from. If from an online source, try to be specific. If in reality, try to give a little input on the process. Thanks.

"What makes a liquid liquid" questions. This is sort of a spin-off of my thread, Faulty Expectations of a theory of Consciousness, but I felt there was something that needed direct addressing, and that thread didn't seem the appropriate place to post it... Anyway, I'm noticing a very serious...

well, I am sure most of the readers of this forum would agree with me that glass in not a liquid. for the ones who don't -> solids used to be defined as highly organized crystals. since glass is not a highly organized crystal it has been referred to being a supercooled liquid that is still...

He I need a picture of liquid helium itself for my project on superconductors. I've looked all over but I can't find anything

Ive heard some arguments for and against glass being a liquid. But what is it officially?

Well, let's get these new playgrounds up and running! http://www.liquidmetalgolf.com/ I saw a special about this stuff on the history channel a few weeks ago. It looks really cool. Anybody have any cool ideas how it can be used?

What makes a liquid rhythmically "jump" in a running blender? What makes a liquid rhythmically "jump" in a running blender?

I watched the movie "The Abyss" last night and was very intriged by the scene where harris puts on the experimental underwater breathing unit. I did some research and it seems it's actually possible to take in a liquid called Perfluorocarbon. Research was done in the 60's and scientists...

Ok I am no expert on this, but apparently liquid Helium, when cooled to near absolute zero temperatures (below a certain value which is about 5 K give or take 1 or 2, don't have exact) About 1 millionth of the viscosity it once had remains. This means it becomes a superfluid. It climbs UP...