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I'm looking for a way to rotate blocks. There is a single axle going through the blocks.. say there are a dozen of them. I am trying to figure out a way to rotate each block individually to one of the 4 sides based on different inputs. I am also trying to accomplish this with a single motor...

Homework Statement A particle moves with constant speed in a circle with a radius of 5m in a counter-clockwise direction. It makes 1 revolution every 16 seconds. What is the average velocity for 1/4 revolution? 5/4 revolutions? Homework Equations Wrapping Function: W = (cos t, sin t)...

Homework Statement Find the derivative of the function f(x) = sqrt(x). (Bear in mind that cannot use the power rule or anything like it. I must use limh->0.) Homework Equations limh->0 (f(x+h) - f(x))/h The Attempt at a Solution I'm getting hung up on expanding out the...

Ya know, rare earth magnets and crap like that. Anybody know of some other cool things to have sitting around the house?

Homework Statement Find the range of h Homework Equations h(x) = sqrt(25 + (x - 3)2) The Attempt at a Solution I factored out the (x-3)2 and simplified to get sqrt(x2 - 6x + 34) I was trying to figure out the domain first, knowing that x2 - 6x >= -34 in order for the...

This is the one occupation that I'm sure I would love, but the more I read on it, the more impossible it seems that I will land a tenured university position. I'm a 1st year student at Michigan State and have a 3.9 at the moment. I imagine I'll end up in the 3.75+ area after my physics...

..sucks. I have the Sky-Watcher 10" dob (got it for xmas). All around, it's a great scope for the cost, and produces some very crisp visuals of surprisingly distant objects... when it can center on them. I find myself having to constantly aim higher than the object so my telescope will "fall"...

What are some of you guys' favorite artists/bands? Just wondering =) I'm a big Tool fan, anyone else?

Which fields of engineering involve the most physics. I'm a physics major at the moment, but after seeing how ridiculous it is to land a tenure position at a university, I'm considering switching to engineering. What do you guys suggest for a physics/math buff?

Up until middle school.. math was my thing. I wouldn't say I "enjoyed" it, but it definitely came naturally. My teacher even forced me to do math counts in 7th and 8th grade. We had a grad student as our coach and he always tried to get me into math, and, for whatever reason, I just really...

Is there a distance where the curvature in spacetime created by an object's mass ends? Is it a finite gravity well or does the curvature just get infinitely weaker?

A while back, I posted here asking for telescope recommendations. After many members advised getting a dob, http://www.skywatcherusa.com/8-dobsonian-telescope-s11700.html" [Broken] is what I went with. I love this scope. Seems very well put together and can capture some pretty amazing...

I know the topic is incredibly original, but I was just curious as to how many people genuinely accept this as a feasible explanation for the creation of the universe. Personally.. I think (at least for a long time) that there is no way of knowing. I don't like how mainstream this theory has...

I'm a freshmen in college (currently undecided on my major) and am seriously considering an undergrad in physics with the intention of going to graduate school for astronomy. But before I get serious about it, and with Christmas on the way, I want to get a decent telescope. I'd say my possible...