Storage Definition and 258 Threads

Homework Statement I am supposed to prove that linearity holds for energy storage elements. Homework Equations So far I have got to know that linearity can be proved by superposition. The Attempt at a Solution I attempted to make a circuit with a resistor, capacitor, a voltage...

I was just curious if anyone knows of any new and upcoming methods of hydrogen storage to be used for fuel. The only three methods I know about are hydrides, liquid hydrogen, and compressed tank storage. Does anyone know of any new methods that are in development? I know there's a lot of money...

Homework Statement A storage reservoir is continuously filled through a pipe delivering 2.2cfs. The reservoir is circular in shape with a diameter of 20 ft. The height of the tank is 12ft. A pump operates for the last 5 minutes of successive 20 minute intervals, draining out 350 cubic feet of...

I am looking at creating a music library on my computer of the hundreds of CD I own. My first question is what should I be using for quality? I know I should use the 320 for archiving, but I am not sure I need the archives with the CDs still available if needed. Just looking for opinions on...

Hi, Im a pretty decent MATLAB and maple user and now I am starting to use mathematica, because I've heard good things about it. I had some simple questions about it that I was hoping someone could answer. 1.) What is the best way to store data in mathematica? Do people use matricies like...

Here is my problem [the last one of a lot that I already got all right and have to turn in by midnight - so you can sense my frustration, lol.] A .39microF capacitor is charged by a 1.5 V battery. After being charged, the capacitor is connected to a small electric motor. a) Assuming 100%...

this EurekAlert page links to a MIT press release describing the operation of the new catalyst and potential applications http://search.eurekalert.org/e3/query.html?qt=Nocera&col=ev3rel&qc=ev3rel&x=12&y=16 Dan Nocera is the main person responsible. Here's a ScienceDaily account...

The attachment shows an example from a book on how to size a hot water storage tank (for tap water). During the 24h period a total of 55 kWh is used. The red curve shows the variation in usage along the period. The slope of the green lines is determined by the heat source's power, in this case...

Homework Statement A cylindrical storage tank 8 feet in diameter and 20 feet long is lying horizontally on the ground. The tank is full of olive oil whose weight density is 57 lb/ft^3. How much work does it take to pump the olive oil to a level of 6 feet above the top of the tank? Almost...

Homework Statement Given that 1,206,900 liters of oxygen are required for a round-the-world trip for a hot-air balloon with a crew of three, and given that carbon-fiber wrapped bottles have a maximum pressure of approx 4500 psi, what total volume of pressure vessel would be necessary to...

[b]1. I am wanting to find more out about how electricity could be absorbed by some sort of conductor and then stored in a different containter from container a to container be. Saying that this were to be done from container a where electricity would be generated and roaming freely, needing to...

what is storage class in c++?

http://www.newscientist.com/channel/health/dn13501-twoweekold-blood-no-good-for-transfusions.html?feedId=online-news_rss20 http://content.nejm.org/cgi/content/full/358/12/1229 Oh dear. Discuss.

Can the bioaccumulation of toxins with high lipophilicity within the body cause it to store more fat, maybe in order to dilute the toxins? I heard this from a somewhat questionable source a while ago, but it sounds plausible. I was reading about Persistent Organic Pollutants (POPs) but I...

the acid solution in a fully charge lead storage cell contains 33% h2so4 by weight and has a density of 1.25g/ml. cALculate its molarity

I have looked everywhere i can think of trying to find information on how to clean a tank that has been used to store water based emulsion. The tank measures 10.5' X 30' and by rough calculation holds around 18,000 gallons of liquid. I took a hard chunk of the material and put a torch to it...

What's the safest way to dispose of and store nuclear waste? Is there any chance of rocketing it into the sun or is it too heavy?

How long can blood be stored for until it's no longer usable is there a length of time after which its stored where it can no longer be transferred into someone? why/why not? thanks

Last month at the International Symposium on Materials Issues in a Hydrogen Economy, held in Richmond, Virginia a new development in room temperature adsorption of large amounts of hydrogen (14% by weight!) was announced. The work was presented by Bellave Shivaram and Adam Phillips, of the...

Is it difficult to make? as a complete beginner, what do I need to know, and am I way in over my head? :) any help would be appreciated.

Homework Statement The diagram below depicts a cross section of coaxial conductor with an inner wire of diameter and an outer conducting sheath of inside diameter , and some material placed in the space between the two wires. Suppose that you have a coaxial wire with di= 2.85 mm, do= 6.25...

This idea is for an alternative to large scale energy storage. Sorry for the double and confusing post (https://www.physicsforums.com/showthread.php?t=179768), I should have posted here in the first place. As far as I can understand, pumped-storage hydroelectricity is the main technology used...

Hi all I am totally new to this forum, so I do not know whether this has been posted before, and if so I appologize and hope that you can direct me to that thread. I am currently involved in a project regarding energy storage and I have found out that the major technology platforms are the...

I guess I do have to ask some questions on magnet storage. Especially over long periods of time. Basically, I want to know what the effects are if you store (relatively strong) magnets north to south with a slight gap in between (roughly 50mm between). N===S N===S N===S That's pretty...

tell me if anyone knows that if we maintain a pressure of 500psi in the tank then what will be itz volume and dimensions

I just read my latest "Material Matters" issue from Sigma Aldrich. One story relates to the storage/production of hydrogen using liquid "fuels". These fuels contain easily oxidized structures that release hydrogen upon the application of modest heat in the presence of an active catalyst. A...

I have an idea I would like to analyze but I'm practically ignorant of physics and engineering so I'm hoping you folks can give me some informative feedback. First, something tells me this idea is ridiculously uneconomical and/or impractical, but I'm still curious to find out and it will be a...

I'm new to message.. I have a project about stratifed thermal energy storage... Are there anyone that can help me to guide or give resources about this subject.? In my project: heat is stored in stratified way: there is a thermal layer between hot and cold water. Anyone who knows...

This is not a very comforting new. It appears that one of the ceramic material used for storing nuclear wastes http://www.nature.com/news/2007/070108/full/070108-6.html" than first thought. The damage done by the emitted radiation, especially from alpha and its collision byproducts, are damaging...

Hi all you braniacs out there... I am a final year mechanical engineering student. I need to do a final year project on numerical simulation on melting of phase change material.. I will be required to make use of gambit and fluent CFD software of which i have no idea about... However currently...

"A large storage tank, open at the top and filled with water, develops a small hole in its side at a point 16.0m below the water level. If the rate of flow from the leak is 2.50x10^-3 m^3/min, determine; A) The speed at which the water leaves the hole and (B) The diameter of the hole. So I...

:smile: As i know there was the load for the weight of tank itself, second will be the volume of the soil on the top of the tank. Since the horizontal tank is round at the upper part, so is that the force wil be uniformlly distributed along the curve surface? Is that any force of stress...

can anyone help me with the following problem: I have been asked to estimate the rise in temperature in the salt in a final storage containing spent HTR-fuel elements in a time span of 100 years. Given the following data: Average heat flux 10 W/m; Heat capacity of salt 0.9 kJ/kg.K; density of...

As the net gathers more and more information, will some of the old stuff have to be dumped to make room for new stuff?

This is my analysis:1)quantum can have two states at one time:0 and 1.So n QBits have the volume 2^n. 2)when it's observed,the quantum state will collapse to a certain one. So the comtradiction is evidence:the information of the 2^n Qbits disappear when I only read n Qbits from it. Ok...if...

http://www.doc.ic.ac.uk/~mpj01/ise2grp/energystorage_report/node8.html" ah just what i need for that Superconducting Railgun project :rolleyes:

Would this be a viable waste "storage" method? http://home.earthlink.net/~dengelhardt/ It sounds to good to be true so I guess it is just that. :confused:

Hello. I am at my university working on an idea if it would be possible to store heat energy in quicklime CaO. We are to use a solar parabol to concentrate the sunlight and get a temperature in focus around 1000 C degres. In that temperature it is possible to burn limestone to quicklime...

Dear folks, Please help me out. I store my purified protein samples at -20C and they are still at the liquid form (a few are frozen) at this temperature! :cry: I used Trizol kit to purify them and dissolved them in a solution of 9M urea, 4% CHAPS and 30mM Tris/HCl pH 8.5 buffer. They had...

Can you give me some advice on this: ------------ Are you in a position to supply us the below item: Please let me know the price as CFR Bandarabbas Iran. Subject : vertical liquid oxygen tank (lox tank) capacity: 18000_22000 lit working pressure : 17 bar Daily...

Flywheels are interesting but dangerous if they malfunction because the energy is concentrated in the vicinity of the rotor. My question to you ME's is this- could you engineer a practical and/or efficient energy storage system that relied on gravity? I envision an enourmous mass on a...

Find the tension ( stretching force) on the string whie system is accelerating. I know that the pull on block "A" for acceleration is gm2 / m1 + m2. so what is the source of the kinetic energy store in block "A". :confused:

What is energy?How a flywheel stores energy? What is the physics behind that?

Here's a novel new way of storing information: Give every symbol a code from 000 to 999. Write down the information in this form. Then the Key(Master) trick up our sleeve: Put a decimal point before it. Reduce the fraction to the simplest form. Then take a 6-inch platinum-iridium alloy bar and...

Hey guys What do you think would be the best solution for setting up a rack mounted RAID5 for ~ 1 TB of storage What I'm thinking is a rack mounted computer case with a precent decent computer in it with gigabit ethernet. I'd like to have the computer with it's storage as a stand alone...

i wonder how long can i store my cells in incubator if i don't need the cells right away, but in coming days? should i change the medium regularly when i store the cells in the incubator instead of freezing? or do i have to freeze down the cells immediately and thaw them when i need them...

im working on building a simple thermal energy storage system...im using water as phase change material.The PCM will be injected into spherical capsules and dropped into a storage tank.Now my problem is that the freezing process initiates only at arnd -12 C.Remember it is under pressure...

hi, could anyone pls tell me why the storage time of a transistor changes as u change the position of one resistor? During an experiment, when the resistor connected to the base voltage was reconnected to the ground i noticed that the storage time increased. pls someone explain to me why...

:rolleyes: hi, could anyone pls tell me why the storage time of a transistor changes as u change the position of one resistor? During an experiment, when the resistor connected to the base voltage was reconnected to the ground i noticed that the storage time increased. pls someone explain to...

http://s1.lite.msu.edu/res/msu/stump/Energy101/pumpedstorage.gif Consider the Ludington Pumped Storage Plant. Water may flow out of the reservoir, through the penstocks, and down into Lake Michigan, at a volume rate of 1710 m3/s. The water is directed through turbines to turn electric...