Liquid Definition and 1000 Threads

I need a little help from anyone capable... My company is looking to ship 1000s of the packages around the US, the problem is as follows: The packages contains pods in pic related - they have liquid in them, and sometimes during air travel, the difference in pressure causes them to leak. We...

Somehow I am worried it is a can of worms, but I will still try. This started with a student confused with statements describing critical temperature for the gas/liquid equilibrium. Some books and sources state it is the highest temperature AT which it is possible to liquefy the gas just by...

Liquid is being pumped into a vessel then it leaves and recirculates through the pump. I have calibrated the pump by measuring the amount of fluid being pumped through the tube (not into the vessel). However I have noticed at low flow rates the liquid level at the inlet is only half full! That...

I was trying to find the compressibility of water and compressibility of air to compare. For compressibility of water I found 46.4e-6 For compressibility of a gas... I am having a tough time finding anything. compressibility factor I can find, which is 1 for Hydrogen... but how does that relate...

Homework Statement a)Consider the vessel in the figure shown. It contains a liquid of density p. Calculate the pressure, and give the direction of the force on the container due to the liquid, acting at each of the following points. b) Consider the second figure shown. Why is the pressure the...

A friend and I were debating this. Would you be better trying to swim to the surface of 20 feet of alcohol or 20 feet of honey. We can figure out that swimming out of alcohol is rather hopeless due to density but for honey we have no way to consider the viscosity of the liquid. Any thoughts?

Hi, here's a quick brain teaser, if we have 3 objects in sealed boxes, we know what the objects could be: a solid metal cylinder, a metal sphere, mixed shape beads, a beaker with a metal object in it, a pyramid. We can pour water into the boxes and measure the relative liquid height between...

I was reading an online chemistry textbook that said "when a liquid is subjected to hydrostatic pressure (for example, by an inert, non-dissolving gas that occupies the vapor space above the liquid surface), the vapor pressure of the liquid is slightly raised." (link...

If there is no velocity and the fluid is moving still, then there is no kinetic energy, would there be no pressure exerted on the walls? Or perhaps there is a basal level of kinetic energy of the molecules as they are vibrating?Lastly, how can there still be flow if the pressure gradient is...

I want to use a pump to have solution moving through a reaction vessel at a set flow rate. But the problem is the outlets FROM the pump are very small 1/6" (0.4cm) inner diameter, and the vessel INLET is GL14 thread size (1cm inner diameter). Schematic Problem Pump...

Homework Statement A block floats partially submerged in a container of liquid. When the entire container is accelerated upward, which of the following happens? Assume that both the liquid and the block are incompressible. A) The block descends down lower into the liquid. B) The block does...

I know that non volatile impurities increases the boiling point of a liquid. Does volatile impurity decreases the boiling point? How?

I have a question about upthrust. I have studied that if an object is placed in a fluid and if the upthrust is not equal to the weight of the object even after the object is fully immersed in the fluid, it sinks. My question is that is it possible for an object immersed in water to keep sinking...

I know that HCl is a compound whose 1 molecule is composed of 1 hydrogen and 1 chlorine atom bonded co-valently to each other, the bond being polar co-valent. It exists in gaseous state at room temperature. When HCl gas is dissolved in water, it dissociates to furnish H+ ions and thus HCl...

Hello MHB Forum, Glad I found this forum, have spent quite some time getting reacquainted with past math concepts. I recently came across a simple algebraic problem in my home wine making, but would like some assistance creating the problem setup for this particular problem. I want to add...

I've a problem with a question regarding a closed spherical storage tank of 30m^3. Its filled to the 99% mark with Nitric acid and the tank is made of stainless steel. I'm trying to determine the temperature rise that will cause the liquid to completely fill the vessel. I know that as the...

Im working on a problem regarding a SSME and need to figure out the balanced eq for LH2 and LOx. I thought it was simply.. H2 +0.5O2 > H2O however my professor has confirmed that it is not the case in this situation. I am stumped as to what it could possibly be, maybe excess H2? And am not...

hello i am new here. I am facing a problem in fuel gauge that when i drive for a long time on hills it start to show false value. I decided to solve this problem i have a gyro and known resistance from fuel tank of my car and now i want to have true value all the time please help me with it or...

Does energy have different states analogous to the solid, liquid, gas, and plasma states of matter? Would they be the same as "forms of energy" described here? https://en.m.wikipedia.org/wiki/Forms_of_energy

Hello , Above question came in a national level grade 10 exam recently .If suppose ΔQ amount of heat is transferred to B in time Δt , then how are we suppose to relate that to heat transferred to A . Should the rate of heat transferred to B be equal to that transferred to A ? I am attaching...

Suppose there is a test chamber containing liquid nitrogen. The container is insulated and only a small opening is there so that chamber is exposed to atmospheric condition. As the saturation temperature of liquid nitrogen is -196 degree Celsius at 1 atm pressure. chamber will remain at -196...

Hello, I'm interested in building a small non-invasive battery powered device that wraps around a pressured 1/2" pipe for measuring potable water. From https://en.wikipedia.org/wiki/Magnetic_flow_meter and watching youtube videos, it seems they all use electrodes which contact the liquid...

The accepted explanation for the existence of water as a liquid involves hydrogen bonding. Why is this phenomenon absent in the case of hydrogen sulphide?

I was looking at btu numbers for common fuels and noticed 1 barrel of crude oil (42 gallons) contains 5,800,000 btu's with diesel fuel containing 139,000 btu's per gallon would it be possible to concentrate 42 gallons of diesel fuel to get more btu's per gallon? Also the wood into liquid fuel...

Hello, I am trying to achieve a range of temperature (below 0 degC) by heating up liquid nitrogen (77K) with an electric heater (100W) inserted into a copper block. How do I calculate the time taken (t) for the nitrogen vapour to reach temperature T (say 100K). The liquid nitrogen is poured into...

Homework Statement Kindly refer to part (c). The woking should be power/0.35 (what I think according to the graph). But the answer is power (that is the answer of part b) divided by 0.02 Homework Equations I have used the ratio method simply The Attempt at a Solution According to part (b)...

I want to know whether like liquid water or other liquids available at normal temperature and pressure, can the pressure of liquid air/gas be increased mechanically? If yes, then what kind of machinery can do the job? I am asking the question here not on the theoretical part, but on the...

I was looking at the density of liquids and wanted to find a really dense but abundant liquid. I know that Mercury is quite dense, but is fairly abundant? I was also thinking about ferrofluids : 1. How dense is it? 2. Can it be made in increasing densities and up to what density possibly?

Hi I'd like to ask how you would put a droplet at high viscosity (say 2.5 million times more viscous than water) on a solid surface? The droplet would have to be small (volume less than 10uL, r<1.34mm).. Thanks!

Will liquid metals create droplets when falling or will they create different shapes?

Hi, Could someone please help me about what is the physics concept behind Cymatics. Is there a formula which establishes the patterns form on a liquid when the frequency or amplitude are changed? Thanks.

Hello, I'm a bit rusty with my fluid mechanics and can't seem to find the answer anywhere. Basically I have a pressure wave traveling in a liquid at the speed of sound through a pipe of the shape shown in the attachment (basically a semicircle of constant cross sectional area and then a cone of...

Hi, I have a general question I was thinking about... So, in a liquid the particles are already very close together and as a result they are, in effect, not compressible. That being said, if we take water, for example, it is possible to compress is slightly. It requires, however, a great deal...

Homework Statement A hollow sphere of inner radius 9.0 cm and outer radius 10.0 cm floats half submerged in a liquid of specific gravity 0.80. (a) Calculate the density of the material of which the sphere is made. (b) What would be the density of a liquid in which the hollow sphere would just...

I want to find a Dewar or vacuum flask for liquid nitrogen under $50. Does anyone have any recommendations where to buy one?

The pressure of a liquid in equilibrium, is equal to the pressure of it's vapour, or to the sum of vapour pressure plus atmospheric pressure? My doubt starts from this problem: At 293 K and 1 atm, the vapour pressure of water is 565.8 Pa. Calculate the vapour pressure of water, when the total...

Homework Statement A cylindrical glass tube (linear thermal expansion coefficient ##\alpha##) contains liquid (volume thermal expansion coefficient ##\beta##). The height of the tube is ##h_{t,0}## and the height of the liquid inside of it is ##h_{l,0}##. If the temperature changes of an amount...

Homework Statement I'm confused about the following kind of situation. Consider a block of density ##\rho_b##, mass ##M_b## and section ##S_b## that floats on a liquid of density ##\rho_l##, in a tank of section ##\mathcal{S}##. On the block there are some objects (all equal), of density...

I am not a scientist or particularly good with math or formulas. I have been curious about this for a while, and would appreciate anyone clarifying/correcting me. I have a stainless steel container that can be heated up to 75 degrees celcius/165 degrees Fahrenheit in a bain marie. It can hold...

I just remembered that in my lab from a few months ago, the 12M HCl we used was "evaporating" or producing gas, similar to dry ice in water but no where near as much vapor. I'm just curious, is concentrated HCl usually like that or was the acid contaminated?

What I know: Below link is about Torricelli's law. Velocity of liquid coming out of bottom of the tank i.e comes after using Bernoulli's equation square root of (2*g*h*) where "h" is height of fluid in the container and "g" is acceleration due to gravity...

Hi, For someone who's familiar with LC's: How to derive the expression for free energy density of an hybrid aligned LC cell? what should be the vector for the director? I already familiar with the cases of splay and bend cell but couldn't understand how to derive it to the case where the cell is...

Hello, my first post here. I encounter a situation frequently at work that I'd like help with so here it is... When I isolate a particular section of pipe (by closing valves), I then bleed off the pressure in the isolated section (volume of isolated pipe varies from 3 cubic meters up to about...

hi every one , I'm a student in university , i have a projet it's about calculate speed of waves in liquid by to piezo electrique , one workd like emmeter and the other receppter , the distance betwin the two piezo is fixe , the probleme is i nedd to calculat the time betwin the moment who i...

I know that this has been talked about already, but from the responses, I feel the topic was not addressed to the fullest, but as we know a Jet engine is subject to the amount of O2, so i was looking at a earlier post about this topic. within the replies to that topic the rocket engine was...

Homework Statement An aluminum rod 0.500 m in length and with a cross-sectional area of 2.60 cm2 is inserted into a thermally insulated vessel containing liquid helium at 4.20 K. The rod is initially at340 K. (Aluminum has thermal conductivity of 3,100 W/m · K at 4.20 K; ignore its temperature...

Good day to all! I have a question : We have a flowing fluid ( liquid ) with known pressure, flow in the pipe ( pump is pumping it). There are some spherical microparticles in the liquid, let's say 10-15 microns. I want to create force to stop them moving! Will the pressure force be in the form...

I have a plastic injection mold, the part I am running has hot spots in the part when it is being shot in the mold. Would like to try to incorporate a closed loop plumbing system to carry liquid nitrogen past the back side of the cavity in hopes to pull the trapped heat from the hot spot area...

Homework Statement Homework EquationsThe Attempt at a Solution Considering the upper hemispherical liquid part ,the forces acting on it are , force due to the shell and that due to the bottom liquid . Doing a force balance , force due to upper hemispherical shell = ##\pi R^3ρg -...

I once knew both how atmospheres formed on planets and how oceans of liquid water formed on planets, but I have forgotten that information. I know that both atmospheres and oceans of liquid water formed due to chemical reactions, but I used to know more of the details of what type of matters...