Aluminum Definition and 303 Threads

Hello, Just wanted to check my some of my reasoning to these. If anyone could confirm if these answer I got are right (or point me in the right direction if they aren't!) I'd really appreciate that. Thanks! 1. Homework Statement (No Relevant Equations, real, & Attempts at Solutions are...

Hi, Please forgive me if this post is in the wrong section. I'm interested in working on a project but my physics is very rusty in terms of calculating stress and in need of help. I would like to know which is better given the below aluminum 6061-T6 tubing with similar weights to withstand...

Is anyone familiar with Aluminum Potassium Sulfate? We have a "crystal growing kit" at school, and this is the chemical used to grow the crystals. Since some of my students have conduct disorders, I wanted to know more about the chemical before I permitted the project. I read the hazard codes...

I created a plastic bottle and aluminum can crusher. I researched and found out that my crusher should apply at least 175 lbf - 200lbf in order to crush the beverage container. My design idea is very similar to that of a cold rolling manufacturing process. Although I have research the cold...

Homework Statement Consider a bar of aluminum which is 10 cm X ½ m X 20 m. If the bar undergoes a change in its temperature from 10° C to 20° C, determine the new dimensions of the bar. Homework Equations ΔL=αL0ΔT α=24x10-6 The Attempt at a Solution I understand how the formula...

Hello, I am looking for opinions on the commercial feasibility of extracting aluminum from aluminous clays. The process is described in the following patent filing...

Homework Statement An aluminum wire is 0.850 m long and has a circular cross section of diameter 0.780 mm. Fixed at the top end, the wire supports a 1.20-kg object that swings in a horizontal circle. Determine the angular velocity required to produce a strain of 1.00  10–3. Homework...

Homework Statement A cube of aluminum is 20 cm on edge. Aluminum has a density 2.7 times that of water (1 g/cm3) and a specific heat 0.217 times that of water (1 cal/g·C). The heat in calories needed to raise the temperature of the cube from 20°C to 30°C is about: Homework Equations...

what experiment can be used to calculate which handle of a spoon can be better aluminum or steel so it won't get hot quickly while stirring.

Specific & Latent Heat - Heat required to turn water in Aluminum Tray --> Ice Homework Statement 200 g Water (l) is contained in an Aluminum ice tray that has a mass of 340 g. Both is at 18°C. How much heat (Q) must be removed to turn the water into ice at -15°C? Aluminum mAl= 340g...

So I have this huge solid cylinder of aluminum about a foot tall, and 2-3 inches in diameter. I understand that aluminum is not a permanent magnet. But it DOES conduct electricity. So, if I wrapped a conductor around it, and hooked that up to a power source, would the aluminum become an...

Hello all, Thanks for potentially allowing me to waste your time with a simple question. I am designing a collapsible photo booth and need to know that the aluminum tubing I intend to use is durable/strong enough for both the repetitions of setup and teardown and the weight to be supported...

Background info: This is for a trebuchet I plan on building. Obviously lighter is better especially for the throwing arm which is why I need your help in figuring out that problem, so I can get it as light as possible without it having even a remote chance of failing. If there's information...

Homework Statement Estimate the highest possible frequency (in Hertz), and the smallest possible wavelength, of a sound wave in aluminium, due to the discrete atomic structure of this material. We're given the mass of aluminum, Young's Modulus, and mass density. Homework Equations...

a few weeks ago i bought a number of pieces of 'bismuth' bullions... i already own a piece of aluminum , as well as a few neodymium magnets if i place the magnet on the aluminum and tilt the aluminum to make the magnet slide off, it will encounter some opposing force from eddy currents and...

hey guys, i am planning on buying some pieces of bismuth, as well as machining a disc of aluminum so that there is a hollow circular 'canal' which goes concentric on the disc aluminum has a melting point of 660.32 degrees celcius, for bismuth it is 271.5 degrees celcius i also have a very...

I could not find anything online indicating that such was so, but... If electrolysis of a solution of zinc sulfate results in zinc and sulfuric acid, is it also correct that electrolyzing a solution of aluminum sulfate will result in aluminum and sulfuric acid?

I have sintered powdered Aluminum at temperature about 540 Celsius, can i anyone tell me how it should be characterized ? Meaningly, has it been sintered successfully or not !

Hello and thanks in advance for any help given. I have attached a drawing of sorts (please excuse the novice attempt) for a design I am working on to pivot a 40"x60"x1.5" item framed mirror) using an actuator. My question is specific to the part of the design marked "B" in red. Basically this...

what happens to your tongue when you lick an aluminum ice cream scraper just after it has been used?

Hello Rockwell B or Rockwell E - which one is better to measure the hardness of aluminum alloys? Thank you!

I'm torquing a stainless steel 4-40 socket head machine screw into a 6061-T6 aluminum threaded hole. I've located some torque tables that give differing values for different screw materials, but I'm wondering how this applies since I'm going into a threaded hole of a softer material. We've...

I want to cast a part out of Aluminum (from scraps). Is there anything I can throw into the melt mix to make it come out stronger (not as gummy and soft) ?? Some sort of ceramic I'm thinking? Very fine sand-like stuff (e.g. CaCO3)? Any suggestions for heat treatment too? The part will be a...

I've seen various documentaries where WWII-era aircraft wreckage has been sitting out in the jungles on Pacific islands for over sixty years and everything that is aluminum is in really good shape. Little bit of scrubbing the algae, mildew, and moss off of it, and it would look like new. I...

Homework Statement I have a basic understanding of electrostatics. I know that when I rub a balloon with wool, both the wool and the balloon will become charged. I know that if I bring my charged balloon near neutral paper, the paper will be attracted because of charge polarization. I thought...

In this article http://www.adlabs.com/library/battery.html" (read PDF) an author proposes high energy density rechargeable aluminum-based batteries.They are based on reaction of Aluminum with Iron (or other metals) and oxygen.I still trying to understand why autor is so sure that such type of...

Aluminum has a density of 2.699 g/cm3 , and the atoms are packed in a face-centered cubic crystal lattice. Find the mass of a unit cell. -----I already know the answer is 1.792*10^-22g/unit cell I have a question about how you get the answer: I know you multiply 4.480*10^-23g * 4 atoms/1...

How to determine in a cast aluminum part its consumed fatigue life? Lets imagine I get a cast aluminum part that looks good, but I have no idea for how many km it has been used (automotive). Which kind of non destructive tests or methods could I use to determine the consumed fatigue life, and...

I'm here because I'm debating the purchase of a 1/4" thick 6061-t6 aluminum chassis reinforcement plate for a 3000# track car, versus one that is 3/8" thick. This is a chassis plate that runs below the length of the driveshaft and helps tie the left/right sides of the car together. Let's say...

Homework Statement I think this is more of a gen chem question, but this is for my physics lecture. A student drops two metallic objects into a 240 g steel container holding 62 g of water at 24◦C. One object is a 186 g cube of copper that is initially at 75◦C, and the other is a chunk of...

Homework Statement A 7.5 m long uniform aluminum pole with a mass of 12.0 kg supports a 21.5 kg traffic light. The aluminum pole is attached to a vertical pole by a pivot near the base. A massless horizontal rope supports the aluminum pole and is connected to the vertical pole 3.80 m above...

Homework Statement OMG, Embarrassing typo ^ *HEAT not HEART. :) Sorry! In any case, A construction worker uses a steel tape to measure the length of an aluminum support column. If the measured length is 18.6 m when the temperature is 21.2 C, what ist he length when the temperature rises to...

I recently had some discussions about the use of aluminum in a ultra-high vacuum (UHV) apparatus. There seem to be those who believe Al is good in UHV and those who believe it is bad. I was wondering if anyone has some authoritative source for information on this. Those who believe it is bad...

I am currently designing an aluminum-air battery(e.g. http://en.wikipedia.org/wiki/Aluminium_battery) for a lab class that I'm taking. It seems like the prototypical design for one of these batteries is to have an aluminum foil anode beneath a paper towel soaked in salt water as an electrolyte...

My knowledge of AC voltage is very basic but I have a question. I stumbled upon this by accident. If you take a piece of aluminum, stick one one end into the ground just a little, say 1". Then take a volt meter, stick one lead into the ground, the other lead anywhere on the aluminum...

I'm a little confused and i would appreciate if someone could enlighten me on how there are some claims of certain manufacturers that the strength or load bearing capacities of aluminum I beams can surpass steel I beams? is that false advertising or can that statement ring true? Please help.

Hi all, I've got a pressure vessel that is just an aluminum cylinder with flat caps welded to the ends. Currently, I doing some FEA to properly size those flat caps for a certain factor of safety. Since the pressure in the tank will cause a uniformly distributed load on the wetted surface of...

I've never taken physics, and I'm not even sure this is physics. :S On the hint it mentions, think of freshmen physics, but I honestly have no clue. Could someone help me out on how to even start this problem? Estimate the weight savings if a typical automobile engine (100 kg) is made of...

I'm trying to think of a way to take a piece of aluminum foil and chemical separate the atoms 1 by 1. I was originally thinking of trying some sort of Electrolysis type reaction by turning the Aluminum into Aluminum Oxide... though I'm still searching for the chemical reaction/method to...

Homework Statement A hollow aluminum cylinder is 2.5 m long and has an inner radius of 3.20 cm and an outer radius of 4.60 cm. Treat each surface (inner, outer, and the two end faces) as an equipotential surface. At room temperature, what will an ohmmeter read if it is connected between...

Hi - I hope this is the correct forum for this question... I'm building a camera jib arm - essentially a 1.5" sq aluminum tube, 15' long, with a pivot point in the "middle". A camera goes on one end, and counter weights on the other. I'd like to know the limits of the aluminum so it...

so i have to do a independent lab for physics which determines how many appliances will melt aluminum wire when in a circuit. i'm having trouble getting started with how to set everything up, does anyone know how i should go about it?

I’m looking for information regarding the use of composite aluminum sandwich paneling in the construction of superstructures. I have found quite a lot of information regarding the implementation of foam cores with glass skins in place of solid fiberglass; however I have been unable to find...

Hi, materials engineering noob needs Your help. I've got a problem. What i need to do, is to somehow join aluminum and ceramics in a rather dynamic application. Ideally, i would like do achieve it without using any other substance, i.e. glue. What i need to work with: aluminum rod, about...

I guess this is more of a Chemistry question than anything, but didn't get a response in that forum... I had gas spill onto the floor of my aluminum boat this winter, and it sat there for a few months... when I pulled the boat out this spring there was a rust looking residue on the aluminum...

Homework Statement The Shear modulus for aluminum and copper are 25GPa and 35GPa, respectively. An aluminum and copper pole, both the same length are subjected to the same shear force at the top of each pole, bending each pole a different angle y. Which pole has a higher angle of deflection...

Homework Statement An aluminum beam 79 m long and with a cross-sectional area of 0.095 m2 is used as part of a bridge. The beam is clamped rigidly at both ends. (a) If the temperature of the beam is increased by 29°C, what is magnitude of the extra force exerted by the beam on one of its...

I have a question regarding what material type and thickness could support a given load most cost effectively. Weight of the part will also be a factor in the cost due to the wacked out freight charges these days. I have no idea where to locate the information that I need or a formula so...

Parabola for 18" aluminum mirror Help; need to configure inputs into parabola formula to machine an 18" dia., 1.5"h aluminum disc. for use as primary objective mirror in telescope.

There are a lot of youtube videos and online forum speculations that suggest that tossing a disassembled spark plug at a car window will cause the window to spontaneously shatter. The supposed justification is that tempered glass can easily withstand from softer materials than it (such as the...