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C30N9
got some physics y'all October 6, 2014, 4:07 pm
1- A car, initially going eastward, rounds a 90 degrees curve and ends up heading southward. If the speedometer reading remains constant, what's the direction of the car's average acceleration vector?

2- A plane with airspeed 370 km/h flies perpendicularly across the jet stream, its nose pointed into the jet stream at 32 degree from the perpendicular direction of its flight. Find the speed of the jet stream.

3- An object undergoes acceleration 2.3i + 3.6j m/s^2 for 10 s. At the end of this time, its velocity is 33i + 15j m/s. What was its velocity at the beginning of the 10 s interval? By how much did its speed change? By how much did its direction change? Show that the speed change is not given by the magnitude of the acceleration multiplied by the time. Why not?

4- A particle leaves the origin with initial velocity v0 = 11i + 14j m/s, undergoing constant acceleration a = -1.2i + 0.26j m/s^2. When does the particle cross the y-axis? What's its y-coordinate at the time? How fast is it moving, and in what direction?

5- A jet is diving vertically downward at 1200 km/h. If the pilot can withstand a maximum acceleration of 5g before losing consciousness, at what height must the plane start a quarter turn to pull out of the dive? Assume the speed remains constant.
8 Comments

Glaice
More experiments with camcorder October 3, 2014, 7:42 pm
[yt]tmfqxZ5z6mc[/yt]

Yea, I am behind the camera due to the lack of actual space to get myself with them scrunched together in the shot.
0 Comments

Glaice
Ghost Pepper Gumballs October 1, 2014, 7:02 pm
[yt]n6-Cx1VUme4[/yt]

Friends and I (cameraman) try this. I would have joined them but I could not fit myself in the shot with all of them.
0 Comments

Doom Marine
My first program: a calculator September 29, 2014, 5:37 am
http://www.codeskulptor.org/#user38_j3D7HBuK9f_4.py

Once link is opened, press the play button on the upper-left hand corner to run the browser-based compilation of it.

100% my work. Created with Python using the "simplegui" library. Coding is enjoyable.
0 Comments

Avoozl
Just bought a new desktop PC but was this a good choice? September 27, 2014, 7:57 am
I just bought this (scroll down): http://www.ebay.com.au/itm/ALIENWAR...=item3ce83ec039

Because my current 5-6 year old PC is aging away and has already started to show worse signs such as a failing PSU and loud CPU fan I desperately needed a new PC and this one seemed pretty good for the price, I would very much like to know if I made a good choice or not.
3 Comments

Glaice
Hookah bullshit highlights WIP September 27, 2014, 12:55 am
Me and my friends have a fucked up sense of humor. I am behind the camera hence why I am not seen other than in first person camera mode.
2 Comments

Sodaholic
No clue what to think of New York City September 26, 2014, 5:03 am
So I went to New York City in August to see the AVGN movie. I saw it (it was very good, go see it if you like the series). I even got to briefly talk to James during the Q&A sessions (and Kyle afterward), and NYC itself seemed very cool in general, so that was a pretty awesome part of my life in 2014 (even if the rest of it has been largely uneventful, boring and even some shitty low points like my favorite cat dying).

However, I just simply don't know what to think of NYC in general a couple of months after I visited it for only really two days. It seemed so enticing, controlled chaos, make your own way, always something to do. When I was in NYC, I wanted to live there. I didn't even care if I had to put up with all the noise when trying to sleep. Then, only days later, I was like "wait, maybe this is TOO hellish of an existence?". I wondered if it was all just too much, with the only opportunity available for those with preexisting connections to the industry or craft of your choice, and getting screwed otherwise.

I dunno. It was a unique experience and I'd love to visit again, but is it worth living there? So many contradictory stories of what it's like. "Oh, yeh. Totally same living here as it is to visit" while simultaneously hearing others say "Nah, man, completely different than just visiting". Which is it, dammit? It seems to me that both types of people are projecting their successes and failures onto the city that provided them with those experiences.

Should I hate the city or love it? I don't know! I'm so confused and cannot think of what to make of my experiences as a brief visitor.
4 Comments

baronofheck82
1009821630 seconds September 25, 2014, 8:28 am
...or 32 years. Which, coincidentally, is how old/young I am today. Hooray! :D
3 Comments

Jimi
Some advice? September 24, 2014, 2:38 pm
Month at school. Things haven't gone as well as I had expected/hoped. Now I'm quite depressed and don't know what to do.

No one there really talks with me. Every one else sure talk a lot with each other. Then I've been really tired, even on weekends, and don't get anything done on my freetime and no time to check on my snake. She wakes up when I have to go sleep.

Lectures there have been kind of boring. I'm not interested in some statistics about diseases or how food travels through a human. Physical exercises and learning to guide them have been interesting. But having to go through all that other stuff.. just doesn't feel like what I want to do. Maybe if I had found some friends there, the lectures wouldn't be so painful.

I kinda want to quit, but if I do, I need some plan/idea what to do then? Should I study something else? Should I try games industry again (work in something else than my personal project)? The first time I was serious about working on games, no one took me seriously or gave any respect/support, even when I had a job about it. Have things changed on that?
14 Comments

baronofheck82
Thoughts September 22, 2014, 3:56 pm
I, speaking for myself, really enjoy sitting and thinking about these subjects, if you couldn't tell, which is why I wrote about them.

You are sitting here by yourself. You are typing words and they are appearing on a computer monitor in front of you. You feel keyboard keys moving under your fingers. How often do you sit and think about that action? You are quite literally moving matter - your body - with your mind. So then, comes the question: What are we, exactly?
Are we matter, or mind?
Also, when you're sitting there typing on your keyboard whatever it is you're typing, you're doing something. You are thinking. You are coming up with words - thoughts - in a human-made language. But what is human? We are evolved apes. Apes are animals. We, then, are animals. We, everything alive on Earth, are living matter.
Living matter. Think about that for a while. Think hard. It's quite mind-boggling when you come to that realisation.
Speaking of matter, it is not actually physical. What we think of as solid things, with weight and substance, are actually progressively tinier bits of matter. Scientists have discovered sub atomic particles so small their mass basically doesn't exist. But it does exist. Which is even more mind-blowing.


Now let's talk about Earth.
Let's talk specifically about the roundness of the planet. While it is not perfectly round, it's certainly round enough. And it's huge, at least relative to us. One thing in particular that always kind of blew my mind, and still does, was that no matter where you were on Earth, from your point of view, everything would look flat and straight ahead. Say you were in Australia. You literally would be nearly upside-down. You really would be upside-down at the South Pole.
Earth, in a very broad sense of the word, is our home. For now it is our only home. We really should try to protect it and take care of it. Neil Armstrong said the Earth was so small as seen from the moon that he could literally put up his thumb and hide our planet behind it. Needless to say that would make me feel very, very small indeed.
I do believe at some point, maybe not too distant in the future, that we will build settlements on the moon. I can easily see moon bases a century from now. Everyone alive on Earth has, at least once, seen a moonrise. Now imagine being on the moon and seeing an Earthrise. Imagine the oppurtunities for astronomers living on the moon, for instance.Now imagine us, humanity, colonizing other worlds, Mars, the moons of the gas and ice giants, Pluto. Now take it a step further and imagine us creating the technology needed to colonize other worlds around stars that far, far away. I personally think it will be quite awhile before we see that kind of technology.
4 Comments

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