Liquid Definition and 1000 Threads

I have an application where I need to calculate the vacuum (pressure change below atmospheric) generated from a cooling liquid in a semi-rigid container. If the container is filled near full (e.g. 2 litres) with a liquid at e.g. 70C, sealed and left to cool to ambient (e.g. 20C) there is a...

Went to visit a Jr. High today to make liquid nitrogen ice cream. One way is to drop the ice cream mix into the nitrogen. I think we actually made some liquid oxygen accidentally. After doing the dots, we strain the nitrogen through a sieve to catch the ice cream and store the excess in a...

Homework Statement The fluid level in the tank ((1/4)*(x-4)^2 + y^2 == 4) is 7 m on the left edge of the tank (where x=0) and 5 m on the right edge (where x=8). Find the equation of the plane of the liquid, and use a double integral to find the volume of liquid in the tank. [Hint: you should...

It's hard for me to find the why,bcz most books only give this without any explanation Is there anyone who knows the exact reason?

Hello I have a question please i am not sure about. I work with this machine as a operator but would like to learn more. 1. I have attached a picture of a juice separator tank. The juice enters the separator where the liquid goes to the bottom of the tank and the vapour rises to the top...

Hi this is my first post here. I am attempting to calculate how long it takes for a soda can(355ml) to change from Current room temperature(75F), to say 38F, however the refrigerator or ambient temperature in this case is 35F. I was given a corollary from a friend, but the values I get in...

can you please state some liquid which is a good heat conductor (which have low specific heat capacity)

Homework Statement A helium-neon laser beam has a wavelength in air of 633nm. It takes 1.38 ns for the light to travel through 30cm of an unknown liquid. What is the wavelength of the laser beam in the liquid? (IN NM) Homework Equations v=wavelength*frequency v= d/t The Attempt...

http://www.physorg.com/news184310039.html On the company's website it states; Certificates and expert’s reports by accredited independent institutes and labs have documented the following properties: * Physiological harmless * Food safe * Compatible with skin and mucosa * Free of nano...

Hello all, Consider the following scenario: I have a pipe entirely filled with water flowing through it due to a pump at one end pressurising the fluid. Imagine that underwater, I trap some of the flowing water in a capsule, completely filling the capsule with water, and then closing the...

I have a number of difficult questions regarding this topic! 1. How to find the coeffients of the Liquid Drop model? I have a table of atoms with their masses, and total binding energies. Do I just fit the curve of the B/A vs A to get the coefficients? 2. In a Liquid Drop model, what...

http://arxiv.org/abs/1001.4090"

In which case would water fall out of the tank faster? 1) If I were to take a tank filled with water and bore a large hole in the bottom of it with some area 2) Riddle the bottom of the tank with small holes that have an area that adds up to the area of the first big hole. In one scenario...

Homework Statement Water, assumed to be a perfect liquid, has a density of 1000 kg/m3 and a specific heat of 4184 J/kgK. The water undergoes an adiabatic, frictionless process in which its pressure is raised from 200 kPa to 1500 kPa. Find: 1. change in temperature 2. change in specific...

Homework Statement Water, assumed to be a perfect liquid, has a density of 1000 kg/m3 and a specific heat of 4184 J/kgK. The water undergoes an adiabatic, frictionless process in which its pressure is raised from 200 kPa to 1500 kPa. Find: 1. change in temperature 2. change in specific...

I'm troubled by the problem of pumping fuel to a combustion chamber. The big problem is that pressure cannot be directed in some particular direction. So when you see propellant leaving the chamber with a great pressure, it should be kept in mind that the propellant is attempting to leak, with...

I'm starting a Thermal Design course this semester and I need to come up with some type of thermal based design project. I came up with one idea, but I am trying to determine its feasibility, which is not proving to be very easy. I have been trying to find the correlation between pressure...

Homework Statement A steel tank with a volume of 5 m^3 contains saturated R-134a at 10 Celcius. The liquid is then boiled away and disappears at 50 Celcius. What is the final pressure? How much liquid was boiled away? Homework Equations PV=nRT The Attempt at a Solution I pretty...

Homework Statement a ball made of keroseneis put into a liquid kerosene.What happens? Homework Equations ball descends ball floats ball hovers first descends, then ascends. The Attempt at a Solution can anyone help me what kind of kerosene thing is and explain the behaviour of...

Hi All When mixing water and oil, one produces an immiscible system of two liquid phases. Some cosmetic products for women offer three immiscible liquids, producing three liquid phases. What is in nature the maximum number of mutually immiscible liquids (that can be all put together with no...

Hi, I am Design student at Brunel University London and was wondering if anyone could help. One of my current projects is to design a cheap bottle/container to withhold a carbonated drink. The product must be extremely cheap as it is to be aimed at drink markets in such countries as...

Hi, I am Design student at Brunel University London and was wondering if anyone could help. One of my current projects is to design a cheap bottle/container to withhold a carbonated drink. The product must be extremely cheap as it is to be aimed at drink markets in such countries as...

Hi all, everyone know that molecules hold more energy in their gasous phase than their liquid phrase, i would like to ask why is that so? If i look at bernoulli's equation and the ideal gas equation, let's say both phases are filled in their own containers which has the same volume and...

Hi, It is common knowledge that the speed of sound is greatest in solids, then liquids and finally gases. But just thinking, if all things remain equal, how will the loudness of sound compare in the 3 states? My GUESS is that sound in gases could be the loudest. Loudness is defined as the...

OK all since I do not have a physics background I figured I would come to the WWW and search those who did. I am needing some questions answered... here is the badckground info...I work and a Cryogenic plant that has a max of 17000 gallons of Liquid Oxygen and 12000 of liquid nitriogen on hand...

I understand that liquid water cannot exists on Mars for extended periods of time because: a) The atmosphere is too thin b) Resulting in a lower boiling point water c) Which leads to sublimification of solid ice into gaseous vapour Quite specifically, I would like to understand the...

Homework Statement A box is floating in a liquid. It is pushed down then released to oscillate. How do I determine the period of this oscillation? No idea where to go with this one. Homework Equations The Attempt at a Solution

Did Venus have liquid water in it's early history?

1. An insulated beaker with negligible mass contains liquid water with a mass of 0.250 kg and a temperature of 76.1C. How much ice at a temperature of -12.5C must be dropped into the water so that the final temperature of the system will be 33.0C? Take the specific heat of liquid water to be...

Hi everyone! I wanted to ask if in your opinion is it right to say that band structure calculations (and hartree fock calculations) could live in a framework of the fermi liquid theory where quasiparticles are one-electron states (which could be or not could be the case)...

Homework Statement The U tube contains the liquid.The length of the liquid in U tube is L. If U tube has an acceleration a in X-axis and we make liquid a small oscillation.Find the period of oscillation. The Attempt at a Solution I know the answer is...

I was sick so I actually missed this lesson in class and this wasn't mentioned in the notes I got from a fellow student, nor is it in my textbook. I can't even find a definition for what it means that the heat of condensation is "evolved," so if anyone can fill me in on that I'd greatly...

I am studying vapor liquid eqilibrium for two component systems. There are some things which confuse me right now. These are the questions: - (1) Since there has to be atleast one phase, the degrees of freedom are maximum three. Which means, the degrees of freedom are P, T and composition...

In my lecture, my chemistry professor talked about Bonding in Solids. And he asked us whether diamond can melt(in other words, does diamond can have liquid state). And he did not know either. And I was a bit confused. Because in my textbook, it says that Diamond is covalent network solid and...

Homework Statement On a hot 35 degrees celsius day you perspire 1.0 kg of water during your workout. A) what volume is occupied by the evaporated water? B) By what factor is this larger than the volume occupied by the liquid water? Homework Equations PV=nRT PV=NKbT density of water...

Homework Statement Br2 (l) --> 2Br (g) the options are: a. H is positive and S is positive for the reaction b. H is negative and S is positive for the reaction c. H is positive and S is negative for the reaction d. H is negative and S is positive for the reaction e. G Is positive for...

Hello everyone, I have made number of topics recently I think they have all stem from my poor understanding in this matter. Ok in a gas, molecules can take up a volume and exert a pressure. Inside a fixed container when you increase the temperature pressure increases because more gas molecules...

Homework Statement A closed tank contains a liquid of density \rho and a gas (over the liquid) at a pressure P. Suppose there's a little hole (much smaller than the cross section of the tank so that when the liquid flows by the hole, the height of the liquid doesn't change with time) in the...

I now know that gas can turn into liquid when condition are met (temperature and pressures) But I wonder, Is these liquid from gas have a boiling point? and since at normal temp (room temperature) these liquid turn back to gas state, dose that mean their boiling point are below zero? For...

How to calculate the shear rate for the flow of a shear thinning liquid in a non circular duct

If the vapour pressure of a component is bigger than the system pressure, does it means it will fully in vapour phase and no liquid phase are formed??

I am trying to find a gas or liquid that likes to absorb the lower portion of the IR sperctrum (700–1400nm) but let's visible light pass (380-750nm). It can be a liquid or gas because it is going in a sealed container. I know that water absorbs infrared to a certain extent and that's why the...

Homework Statement I'm in a class where we want to figure how liquid CO2 can be produced, how to store it, uses for it. Does anyone know any references online that might provide some information for this? Homework Equations The Attempt at a Solution The conditions to produce...

I am looking for an equation to determine the pressure produced by boiling a liquid. (On the net I can only find information on the effect that pressure has on boiling point) for example, the pressure produced by heating liquid nitrogen to 0K. Any help would be great! Thank you

Well, looks like pretty straight forward problem...! Problem: The liquid level in a simple gravity distributor in an Industrial column at 58 m3/hr is 215 mm, when the chosen liquid medium is water at 18 C (Density: 998.6 kg/m3 and Viscosity: 1.06 mPa s). But when a change in liquid medium...

http://img18.imageshack.us/img18/3276/lalballs.png This started to bother me today. In the first picture, there's a cup wheres a certain amount of water in it. A ball made of aluminium hasnt been dropped in the cup yet. In the second picture, the ball has been dropped in. The ball has...

Homework Statement What is the heat change in J associated with 80.7 g of liquid water at 5.00 ° C changing to solid water at -5.00 °C? Homework Equations c(H2 O) (liq) = 4.184 J/(g.K) c(H2O) (s) = 2.09 J/ (g.K) DHfus(H2 O) = 6.02 kJ/mol The Attempt at a Solution Δt = 5°...

Is iron electric conductor also when it's molten?

Homework Statement A liquid-level transducer consists of two parallel plates of conductor immersed in an insulating liquid. When the tank is empty the capacitance of the plates is 200pF. The relative dielectric constant of the liquid is 25. Determine an expression for the capacitance C as a...

I discovered this by accident and decided to duly inform the scientific community. Same great taste without the hassle (or the cold); it's faster & easier to consume (e.g. during the commute), so the question is, why isn't it marketed widely?