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Thinking of taking FEA as an elective (I'm Mechanical Engineering undergrad), but I'm not sure if it's a difficult course or not. Would it be something useful to know as a Mechanical Engineer in industry? How about in grad school, doing research? (not sure which path to take yet, I'm a third...

I'm just wondering if I could put disc brakes on any wheels. I thought if I wanted disc brakes I had to buy special "disc brake compatible" wheels, but since there are disc brake kits can I attach those to a previously rim brake wheel? If that doesn't work, does any one know where I can get...

It is 2:00 in the morning and my arm/shoulder area is so uncomfortable, that it feels like I want to cut it off. I have tried stretching it, moving it around quickly, rubbing it, etc. It doesn't hurt at all, but it just a very uncomfortable feeling. I am close to tears because I am so tired, but...

Is it drag? I'm trying to think of everything that slows down a bike: friction in the bearings (and chain/gears), weight of the bike, rolling resistance of the tires, wind resistance, etc. But what would be the BIGGEST factor? Is there a link you can show me that explains it also? Thanks!

Is it drag? I'm trying to think of everything that slows down a bike: friction in the bearings (and chain/gears), weight of the bike, rolling resistance of the tires, wind resistance, etc. But what would be the BIGGEST factor? Is there a link you can show me that explains it also? Thanks!

Is it drag? I'm trying to think of everything that slows down a bike: friction in the bearings (and chain/gears), weight of the bike, rolling resistance of the tires, wind resistance, etc. But what would be the BIGGEST factor? Is there a link you can show me that explains it also? Thanks!

Intuitively, a tricycle would be slower than a bicycle, but I'm wondering by how much? What physics equations do I need to use to calculate how much slower it would be (assuming the motor -the rider- puts out constant power/torque). Other factor I guess would be: The weight of the added wheel...

My boyfriend is a meat and potatoes kind of guy. I eat ground beef, but that is really about it. I just don't like the taste of steak or beef. I am looking for certain cuts of beef that I can buy to keep on hand for when he come over and also easy preparation for them. I say "semi-vegetarian"...

by realistic i mean not come in big clumps when you cut it, and is really detailed. and look almost like real hair. i don't care what language it's in

My neighbor is selling an old motorcycle, it looks in great condition (but that's just from the outside so it could just be the paint job). The sign on it says that it needs carb work, and it is pretty old. Would $700 be too much for it? Is it a good bike? I don't want to get a good deal on a...