Liquid Definition and 1000 Threads

Hi, first post, so take it easy on me, I've had an idea for producing metallic objects with high surface area for several years, but lack the necessary physics knowledge to act on it or, really, inclination (and money) to go through years of school to gain such. The idea is as follows: A...

I am working on a desalinization project and need technical advice. These are the basics: If I have a 1,000 sq ft pool of heated water, covered with a chilled baffle, then enclosed in a greenhouse, how much liquid water can I produce through condensation in one day? Any ideas or feedback...

A container filled up to about 2/3rd's with water moves with a unifrom acceleration of 'a' due to a force 'F'. Considering the fact that the defining property of a fluid requires that it's free surface be normal to the net force acting on it, how can the liquid's free surface make an angle given...

I'm looking for information about absorption of light per unit (atom, molecule, stoichiometric) in a liquid vs solid. For instance, imagine a unit cube filled with a saturated solution of, say, potassium permanganate, and shine a laser beam through it from bottom to top and measure the...

A question about Thermodynamics, if someone would help with that... I understand a steam engine that follows the Rankine cycle has basically 4 steps: (a) heating in a boiler; (b) expansion on a piston or turbine; (c) condensation; (d) pump back into the boiler. For many years I have been...

Hi I have people heating liquids in sealed glass Schott bottles in our lab if they cannot find any metal containers in our lab. These are 1 liter bottles they are approximately filling to 500ml with very aqueous solutions. The bottles have not actually broken one, but Schott advises not to...

how do you determine the mass of a liquid using an electronic balance ?:S Anyone knows how ?

I was just wondering that if ozone is a strong[er] oxidizing agent [that oxygen alone] and its boiling point is higher than liquid oxygen [more practical?], then can it be used for applications where liquid oxygen is usually used?

A vessel filled with two liquid how to determine boyant force? A vessel contains oil of density(800kgm-3) over mercury (density 13600kgm-3) A homogeneous Sphere is floats with half of its volume immersed in mercury and other half in oil. What is density of the material of the sphere? How...

How much liquid nitrogen? Hi All, A liquid nitrogen evaporation question for you :) A large metal container is kept at constant temperature of 40 degrees Celsius. This container has a long 10inch diameter tube opening connected to its top. Through a second opening liquid nitrogen...

What is the Mean Free Path of water in it's liquid state? Just wondering how far an electron could travel in water before a collision?

H!, I was wondering, if 1 ml of liquid propane (120 psi @ 70°F) is released into the atmosphere assume 14.696 psi (constant temperature), what will be the change in volume of what used to be 1 ml of liquid propane when changed to gas? From what i heard, the ratio for most gases expanded from...

As we know, when thinking Bernoulli´s equation in one horizontal pipeline, it is p + 0.5 * density * v^2 = Constant. But when thinking a branching of this pipe, then Bernoullis principle for one branch is p1+0.5*ro* v1^2 = C and p1+0.5*ro*v1^2 = C. We think that the two branches are the same...

Homework Statement Three portions of the same liquid are mixed in a container that prevents the exchange of heat with the environment. Portion A has a mass m and a temperature of 94.0 °C, portion B also has a mass m but a temperature of 78.0 °C, and portion C has a mass mC and a temperature...

Does anyone know the experiment where distinct circular patterns appear to emerge in a liquid chemical reaction? This experiment was covered in my thermodynamics class due to its relevance of order emerging from chaos. All I remember about the experiment is that it was not believed at first for...

Hi all, I was trying to find the time required for liquid ejecting from a hole in a tank to reach ground level. The equation given in one of the books is as follows: t = √(2h/g) or sqrt of (2h/g). where h stands for the height of hole in tank shell from the ground level. This...

Homework Statement "Some people say stirring a hot liquid with a thermometer gives a better measurement and some say it yields a worse measurement. Explain with physics how one is actually better" Homework Equations None that I know of. The Attempt at a Solution I know that...

Say there was a container filled with liquid floating in space. What would the pressure of the liquid be? Also would it be affected by the temperature of the liquid? I would assume so since faster moving particles would hit the walls of the container with more force. The reason I'm asking is...

what would the pressure of liquid at a depth be in a container which is slanted?

can a liquid exist in vacuum? Wouldn't it vaporize to gaseous form?

I have the following question/problem of understanding: I am thinking that the only way force or pressure can transfer in a liquid is by water molecules pushing other water molecules, pushing other water molecules etc. If I put a certain pressure in a closed tank to a certain number of water...

Homework Statement 1- Use the thermodynamic table to establish an equation giving the molar entropy of liquid water as a function of temperature. Do the same for water vapor. 2- Use these equations to calculate the entropy of vaporization and the enthalpy of vaporization. 3- From the...

Homework Statement The problem is that we need to calculate, how much time it takes for nitrogen to evaporate. Given data: dewar flask is in a room, where is T= 293K temperature; In such flask m=0,2 kg of Hydrogen would evaporate in t= 3600s. Also there is given boiling point temperatures for...

So my book has an equation describing the wavelengths of light that are diffracted by a chiral nematic liquid crystal in terms of the refractive index (n), the pitch of the helix (p), and the angle (θ) with respect to the surface. The equation is this - λ = np√((1-cos2θ)/n2) If this isn't...

I understand that, given Earth's distance from the Sun and it's atmospheric pressure, it is possible for liquid water to flow and to rain down on Earth's surface. I also understand that, given Titan's distance from the Sun and it's atmospheric pressure, it is possible for liquid methane to flow...

On the way into work, I pass through "Hospital Alley". I saw a collection of Praxair tanks with radiating fins that were covered in ice. If you put fins on something that's cold, it will warm up faster. I was trying to figure out why they would have a system that was designed to warm up the...

Homework Statement One mole of a liquid with a constant molar heat capacity of 132 j/mol K is initially at a temp of 80 C. The heat capacity is independent of tempearture. Calculate the maximum work that could have been done onthe surroundings while cooling the liquid reversibly. The...

Homework Statement One mole of a liquid with a constant molar heat capacity of 132 j/mol K is initially at a temp of 80 C. The heat capacity is independent of tempearture. Calculate the maximum work that could have been done onthe surroundings while cooling the liquid reversibly. The...

Hello everyone! I am trying to design a magnetic testing apparatus that needs to remain at -196K for 20 minutes. There is not exactly a straight foreword equation to get a calculation for the evaporation rate of liquid nitrogen. The apparatus looks like this, and I have highlighted the area...

i am trying to find a liquid that is - cheaply and easily available; easy and safe to use - non-toxic, non-acidic; usable at room temperatures; with a viscosity less than 10 cp; and specific gravity anywhere between 2.8 to 6.5... please help? thanks a bunch warm regards b.

So my question is if I periodically heat some glass of liquid from an arbitrary source, hence providing a driving frequency for the system that will give rise to a phase lag between the temperature of the liquid and the incoming heat from the source, how can I show that there will be a possible...

1. I took two glass plates with a thin film of water trapped in it. One of plates had hook in it. Weights were hung in it. I found that these plates didn't separate until weights of about 2-3 kg was applied. 2.But if slided, it moved easily. I can explain observation no. 2. It is because the...

Homework Statement A liquid is irregularly stirred in a well-insulated container and thereby undergoes a rise in temperature. Regard the liquid as the system. (a) Has heat been transferred? How can you tell? (b) Has work been done? How can you tell? Why is it important that the stirring is...

Homework Statement A hollow spherical shell of external diameter of 1 metre and uniform thickness of 0.2m floats in a liquid with half its volume immersed. If the relative density is 1.5 find t 2 decimal places the relative density of the material of the shell. Homework Equations Buoyancy = Vρg...

Homework Statement Is it possible to use the heat of the sun to heat a liquid (arbitrary liquid) to a temperature that is hotter than the sun, say 5 times hotter? Homework Equations Concepts in thermal equilibrium The Attempt at a Solution My answer is no since you can't get more...

Homework Statement Given- Pressure increases with depth. Homework Equations We know that pressure under a depth h is given by pgh. Where p=density of liquid, g= acceleration due to gravity. The Attempt at a Solution Let us take an example. There is an ocean of a liquid which is...

Hi, what is Liquid Sprays how it is formed Do u have any PDFs or textbooks related to this

Homework Statement A body of uniform cross-sectional area A and mass density \rho floats in a liquid of density \rho_0 (where \rho < \rho_0), and at equilibrium displaces a volume V. Making use of Archimedes principle (that the buoyancy force actign on a partially submerged body is equal to...

Is my understanding correct that the short term stability of fast neutron liquid metal cooled reactors is based primarily on the thermal expansion of the core, while the Doppler coefficient is far less significant factor, as the Doppler coefficient primarily affects the low energy neutrons? (The...

Hey everybody! Let's say we have an infinite metal plate, and we apply voltage between two points, thus creating a potential. On this plate, we take a cutter and create a finite gap (filled with air), somewhere between the electrodes that apply the voltage. Simulations in ANSYS show that...

Hello, I am interested to know how pressure affects how much energy is needed to heat up a liquid, if at all. For example, does it require less energy to heat up water at sealevel compared to the energy needed to do the same at the bottom of the sea? Cheers, klillas

the atomic nucleus mass is given by but why is it a minus away of binding energy / c2 = mass of the empty parts of the nucleus? shouldn't it be a plus? mass of nucleus = proton mass + neutron mass + mass of empty parts of the nucleus?

1. The density of the liquid flowing through the horizontal pipe in the drawing is 1200 kg/m3. The speed of the fluid at point A is 7.5 m/s while at point B it is 11 m/s. What is the difference in pressure, PB – PA, between points B and A? 2. Bernoulli's Equation P1 + 1/2 pv1^2 + pgy1 = P2 + 1/2...

Hi I am having a little trouble designing a micropump out of a mini dc motor-it needs to be able to extract small amounts of liquid (approximately 50 microliters) through a small tube (diameter 0.2 cm or 2 mm) without having the liquid pass through it. Is there any way I can use the motor to...

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 not sinked, a string is holding it. Now please tell...

New to the forum. Currently working on a Masters degree in Nuclear Engineering. Has anyone ever heard of the Liquid Fluoride Thorium Reactor (LFTR)? It looks like a pretty neet idea. I have been watching some videos by a guy named Kirk Sorensen who is a big proponent for this technology...

While Studying 'surface tension' I came across a statement that 'At critical Temperature the interface between liquid and its vapour disappears' without any explanation or logic. Can Anyone please tell me why such phenomenon is observed at critical temperature ? Thanks in Advance.

Look at a simple single - component system. And PT diagram for this system. Suppose that supstance we looking at has three phases solid, liquid and gas. In that case we have critical point between liquid and gas phase, but not between solid and liquid phase. Why? Why solid - liquid coexistence...

I know that a liquid has more pressure at its bottom part than upper part. Does it mean molecularly than the molecules are more condensed and numerous at the bottom? Also, I watched this clip: This video clip says in 00:50 that "when a liquid is enclosed in a space, and a pressure...

Hello, I'm in the process of building a small liquid rocket engine that uses glow fuel as propellant. Can anyone direct me to a company that sells small liquid rocket engines? Thank you.