Iron Definition and 517 Threads

Homework Statement A sample of two different iron ions, Fe2+ and Fe3+, are accelerated by the same potential and then sent through the uniform magnetic field of a mass spectrometer. a) Which ion moves faster after being accelerated? b) Which ion follows the path with the largest radius...

I know the iron-56 nucleus is not a good fission candidate, and that more energy is required to split iron-56 than what is required to split it. But theoretically, if one were to split iron-56, what would be the products and what would be the energy obtained per unit mass? Would there be...

Homework Statement Consider a solenoid with a time varying current and with a coil of wire placed around it. Suppose there is a soft iron rod inside the solenoid. My question is: What happens to the (induced) current in the coil of wire as a result? Homework Equations Faraday, magnetic...

I saw Iron Man 3D last night, and I wanted to know from those who have watched it or will watch it, what do you think of it? The plot, characters, and production. In my opinion, it was good, but Avengers had better special effects. Iron man however had a better plot.

How do i calculate the amound of windings I need to make an solonoid electro magnet with around 1 T.. I checked with google, and there seesm to be a lot of different formulaes which confusses me alot..

Is it possible to create the iron man suit in present times with all the technology involved in it? I was doing some research about the mini. arc reactor, Jet boots, and helmet and what I found was with the helmet we would need to program something like Watson to guide anyone inside of the...

is this basic fact understood?

I was just wondering why is it that the strengthening effect of interstitial carbon is different in FCC and BCC iron alloys. I can't figure this one out on my own so I thought I'd come to the place where the smart people hang out. Any opinions?

My class needed some iron (iii) chloride to determine the purity of some aspirin they synthesized, so I thought I might try making some. I left a strip of iron in concentrated HCl for a few nights under the fume hood. I was expecting a liquid with iron (ii) chloride to result, which would then...

Homework Statement The research notes from an x-ray diffraction experiment were damaged and information was lost. The wavelength of the x-rays used in the experiment, and measurements of the three smallest Bragg angles (θ) from the sample were all that remained: they were 0.71Å, 10.1°, 14.4°...

How would be the easiest way to clean a cast iron fry pan that has been heated with water in it that had calcium in the water as now it has calcuim deposited 1/8" thick? John

Hello Wizards! I need to produce specially pure iron shapes for a research project. As you may know, pure iron is hard to find. Small pure iron bars are the easiest. Is it possible to melt and cast these small pure iron bars into other shapes, without the iron losing its...

I was just curious if it would be possible to compress fine iron powder into a solid puck without applying any heat or binding chemicals, etc. I'm guessing it would take several tonnes of force? Particle size of powder: about 30 microns

If we consider the common electromagnet that is made by passing current through a wire coiled around an iron core, I wonder what effect produces more magnetic field: 1. The field produced outside the solenoid due to the current in the wire 2. For this effect I don't insist that the object is...

If an iron rod, inside two coils, incurs current going through the coils in the same direction, then the rod will increase in length and then it will begin to reduce in length. This is due to the magnetostrictive properties of the iron. When the currents oppose each other, so as to cancel...

I'm an inventor and I have an idea involving magnets. Unfortunately, I'm having a hard time trying to interpret magnetic equations. Please forgive me if I sound like a noob.. I'm new to magnetism. Lets say you have a bar magnet with a field B, oriented perpendicular to a wooden interface...

I want to know, what exactly gives brittleness to cast iron. Have read many articles on it but people beat around bush and don't answer the question what exactly makes it very brittle. Thanks

I want to define (and find the sound velocity i iron). can i read it through the dispersion curves of iron? I am trying to see it through the group propagation velocity, vg = dw/dk, i. e the slope of the dispersion relation w(k). am i on the right track? thanks

Ok so if there be a piece of iron in a uniform magnetc field B, what will be the force on the iron? You can assume any variable you want, but i want to find the magnetic force that causes the iron pieces to move towards the magnet in terms of any variables, like it corss-sectional area, length...

When I was a child, I picked a iron from the earth. It looks a iron, it has a thin layer rust outside. but the shape looks like a stone. it is about 26mm long. I erase a little rust by knife. then the position will not get rusty afterwards in the room even many years.

There is this new product on the market called the Dri Buddi Clothes Dryer that claims to use less electricity than a regular tumble dryer, flattens out the clothes with jets of hot air coming from its blower, does not damage or shrink clothing, does not have filters that need cleaning, is...

http://www.nytimes.com/2012/10/19/science/earth/iron-dumping-experiment-in-pacific-alarms-marine-experts.html Last fall. His intention is the stimulate the growth of phytoplankton, thus absorbing CO2. He also did so in violation of several UN charters (or whatever their rules are...

How would i go about calculating the AC current and overall energy required to demagnetize an Iron plate that has been magnetized by a permanent magnet?

I've got a question that is bugging me If I have a concentrated sodium hydroxide solution and electrolyze it with iron electrodes, some of the possible reactions at the positive electrode are 2H2O -> O2 + 4H++4e-. Eo = -1.23 V 4OH- -> O2 + 2H2O + 4e-. Eo = -0.40 V Fe -> Fe2+ + 2e-. Eo = 0.44...

Hello, I need to calculate/estimate the force between a solenoid electromagnet and a piece of iron on a certain distance from the magnets airgap, preferable in a simple way under ideal conditions rather than a very exact calculation. I have found the following formula at a couple of places...

as far as i understand, piston have cast iron seals because of the properties of cast iron, which make it a sealing material. but i was wondering, if the cylinder and piston are both made of cast iron and closely fitted together, could we avoid using seals all together? friction doesn't depend...

On the flat bottom of an aquarium is an old fashioned balance. On one scale of the balance is a piece of plumbum, on the other side is a piece of iron. The scales are exactly in balance. Now we let the aquarium fill slowly with water, until the entire balance is under water. What happens now...

When we calculate magnetic field of iron core solenoid, should we multiply "relative permeability" or "effective permeability"? I thought that we should use relative permeability, but wiki(http://en.wikipedia.org/wiki/Solenoid) says that we should use effective permeability. I'm so...

Lee Dorman died Friday morning. http://news.yahoo.com/iron-butterfly-bassist-lee-dorman-dies-age-70-005219358.html Orange County sheriff's spokeswoman Gail Krause says that Dorman may have been enroute to a doctor when he died. Iron Butterfly's iconic album In-A-Gadda-Da-Vida was one...

Here goes try number two, the forum deleted my last post. :cry: First time poster, so hopefully I'm following the rules, I do apologise if I'm not. I have a problem with my lab report, I would be very grateful if anyone could help. Thanks. Homework Statement I'm writing a tensile test lab...

Does anyone know how Iron compares to lead as a medium to block / absorb radiation? Do you know what wavelengths or spectrum iron is most effective against?

Homework Statement Two coils are place on an iron heart, like in the picture. The top Coil is connected to a galvanometer, the second could be connected to a power source. Homework Equations Will an electric current flow through the top coil when: a) connecting and then...

If I put an iron of 350K and a wood of 300K in contact, then put them in a container so that they are adiabatic. The question : after a very long time will they become thermal equilibrium? same temperature? My guess : they should be same. But they have different specific heat capacities. If the...

I've been doing classical physics and specific heat so I started wondering why some materials cool and/or heat faster, I figured it probably had something to do with how close together the atoms were in the material or such... than i started thinking why are matters like Iron always so cold when...

i'm making an electromagnet with a battery, some copper wire, and a iron solenoid/core. For the core I'm using is a magnetic spoon, i was just wondering, will it work? here's a picture, http://img706.imageshack.us/img706/9348/spoont.jpg , I'm not done wrapping the wire basically it's...

I know that in the process of fusion in Stars, the hydrogen fuses into helium and so on until Iron is formed. The fusion stops after the formation of Iron and the graviatational force wins to take over the star evolution. Then how do we account for the elements which are havier than Iron?

Why is Earth's nucleus mostly made from iron?

Does anyone out there know of a US based source or distributor for high capacity lithium batteries? 100Ah, 200Ah? 3 - 3.2 volts Everything I am finding is China, and the shipping is just outrageous. Thanks, pud

A friend wrote this in an exchange we had about iron and its role in the process of fusion. I question the last sentence. Is it right, and what is the "coating"? The creation of the element iron via fusion "is the final peal of a star's natural life" (if the star is massive enough to even get...

If an object the size of the empire statbuilding had iron density,what would be ... the mass of it? The estimated volume of the empire state building is 37 million cubic feet,how could I calculate the mass of this solid object if it had a density of Iron(which would be 7870 kg/m³)?

Homework Statement When we have an iron core in a solenoid, the iron core will become magnetised. But if I were to put a piece of iron in front of the iron and solenoid the piece of iron will come out like in a door chime. But as it comes out, will the magnetic field be stretched and elongated...

When iron corrodes in water, it loses electrons to oxygen and becomes iron ions. The oxygen retrieved the free electrons and along with water molecules formed hydroxide ions. Eventually, the iron ions and hydroxide ions react to form iron hydroxide. So based on this, would the iron loses mass...

Good day to you all. A few days ago i attempted produced Iron oxide (III). Here is what i have done: What i have done 1: I put water in a plastic container " 2: I added salt (3 tablespoons) to the water " 3: I applied electricity...

Homework Statement An iron core with a solenoid coiled around it is in a circuit with a switch and a dc current supply. In front of it, there is a iron ring tied to the ceiling such that it faces the solenoid without touching the circuit. When the switch is turned on what is observed and...

1. Homework Statement A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square millimetre; what should be its thickness for a unit working stress of 25 Newtons per square millimetre? 2. Homework Equations ó1 = pd/2t t=pd/2tó1 3. The Attempt at...

Homework Statement A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square millimetre; what should be its thickness for a unit working stress of 25 Newtons per square millimetre?Homework Equations ó1 = pd/2t t=pd/2tó1The Attempt at a Solution t=pd/2tó1 t= 30*300/2*25...

I have two coils standing next to each other. One is connected to a power supply and the other one is connected to a lamp. When I put an I-shaped iron core through both coils the lamp shines brighter than without the iron core. The same thing happens when I use a U-shaped iron core. When I...

Homework Statement "A student reacts an unknown mass of iron (Fe) in an excess of sulfuric acid (H2SO4). The balanced equation is: 2 Fe(s) + 3sH2SO4(aq) → Fe2(SO4)3(aq) + 3 H2(g) She records the following data: 23.0°C...

Hi, I'm wondering if anyone has any sources for off-axis point calculation for multiple current carrying loops that contain a soft iron core. I have been using this resource so far and I can figure out how to include multiple loops. How would I approach these calculations with an iron core...

I've heard Iron has the most condensed nucleous out of all the elements, and I asume it is due to the enormous amount of pressure in a stars core just before the end of its life. My question is if we made iron in a lab, would its nucleous be just as condensed as natural iron or would it be...