Shpaget

From the article, I'm unable to figure out what they mean by "enhanced color". Where does that blue come from?

Currently, to go to the first unread post requires a click to the little small circle or star next to the thread title and the title itself leads to the first post in the thread. That is a usual, standard and expected behavior of the internet forums. That being said, I'm a member of one forum which uses XenForo software and it has a very neat little tweak to this functionality. The title of the thread links to the first unread post in the thread, which means you don't have to aim the mouse (or your big fat thumb on mobile devices) to hit the small circle. I find that rather nice. Yeah, I know, third world problems and all that, but would it be possible to make this change on this forum?

1/87, also known as H0. If you are after stop motion, my suggestion would be to the drop idea about destructing the environment and make multiple stages of destructions instead. Like you said, finding a material that is strong enough to work with and to support itself, yet is destructible into realistic pieces is not trivial. The clay you mention would probably be the best for that, so if you don't want to make multiple scenes with progressive destruction, try to find a drying method for clay that gives you a consistent result. You could also investigate different kinds of clay. I'd bet there are special ones that are resistant to cracking. But even then, 1/87 is rather small for this, your debris will probably look a bit too big.

Dude! Where are all the photos? You need to document this thing!

Could be. I fully accept the possibility that I misunderstood the problem, as I stated previously.

My point was that we don't write other peoples homework, but we will give guidance. The student should be the one doing the calculations. Furthermore, when first coming with the question, he should show his previous attempts and efforts. If someone came here with "Guys, can somebody solve this for me, plox? I need full step by step solution." it would not be beneficial at all for the student if this community just provides the solution. The idea is that the student does the work while we guide and correct errors. kind of like this thread. It doesn't really matter. It could be a railgun, it could be a perfect propellantless rocket, a strong wind or just magic, as it is usually the case with school problems.

Congratulations! I'm pleasantly surprized, but I'm also puzzled by lack of any info on their website.

Third time's the charm? Do we know what's the wind speed limit for the launch?

Thanks! I've never even heard about the game, or the developers, which I'm kind of embarrass to admit considering the fact that I, apparently, pass by their headquarters twice every day.

It's a season ticket (valid for one year for one named individual plus three more in his company) to our exhibition/gallery thing. If the winner used it every day (which is certainly allowed, but not really sane) it would be worth almost $3000. Realistically, it won't be used nearly as often, but even if it is used twice a month or so (and we do have paying customers that are that regular) it comes to about $200. However, keeping it doesn't make much sense, since it is of little value to us. I believe that a marketing value of giving it away is much more profitable than taking the money they would have spent if they had to pay the entrance fee a few times during that year (they most likely would not come twice a month if they had to pay).

Instant "Report spam", right? Well... A few days ago the company I work at had a promotional event and we were giving away some prizes. So after drawing the three winners, I sat down behind a computer to write the three emails to inform the recipients. I clicked into the email subject box and started typing "Congratulation", but as I had a coworker sitting right next to me, I said it out loud and immediately we both realized that was no good. That got me thinking. How should I write the email so it gets the attention it deserves, but also conveys the message that the recipient of the email has actually won a prize? I ended up just writing our company name in the subject and the rest in the body of the email, but now I can't get a thought out of my head: How many prizes have I actually won and ignored because of the "Congratulations!" in the email subject? Seed of doubt has been planted. Any thought on the matter?

Hm, I interpreted the problem as the force starting to act after d= 1 m and not acting from t=0 until d = 1. Reading it again, I suppose I could be wrong, but I still find the wording to be weird.

Generally speaking, we don't do homework here. But, I'll give you a nudge. This is a problem of horizontal gun shot. It being horizontal makes it somewhat simpler. The projectile starts 20 cm above ground, and at t=0 has zero vertical velocity. Time of flight is purely a function of gravitational acceleration and height. If this was a school assignment, you should have covered that and be able to calculate how long it will take for the stationary projectile to fall down to ground from 20 cm. Sub-question 1 doesn't make much sense, since it doesn't specify for how long the force is being applied. One could probably assume that it is applied until the projectile hits the ground. To calculate the speed after acceleration, you need to know how long the projectile travels, from that you subtract the time it takes to travel the first 1 meter. Now you know the time during which the force is being applied. From force and mass, calculate the acceleration. Add the acceleration due to gravity (don't just add them up, keep in mind that they are vectors). Now that you have the total acceleration apply it for the amount of time the flight takes (don't forget the starting velocity). That should give you the answer to 1. 2 is just a sum of distance of flight of 1 meter at constant speed and the rest under acceleration, vs all under constant speed. (hint: acceleration due to gravity doesn't affect the distance, other than limiting the flight time). 3 is the same as 1, only the mass is different, which means the acceleration due to force is greater, so it will go further. Math is the same. v = v0 + a * t d = v0 * t + 0,5 * a * t2

I don't know, but if we plot it on a chart the scale is not linear. If we include the Saturn family, it gets even weirder.

If they launch during a strong westerly, they might gain some bonus dv.

I'd say you're being too optimistic. Too many organisations with much better funding haven't managed to do it on their first try, I don't expect this one to. I'll be thoroughy surprized and impressed if they do pull it off, though. As for odds, I'd set them at: 60% RUD 20% failure to reach orbit due to underperformance 15% launch canceled 5% success Neo : Okies dokie. Neo : Free my mind... no problem. Mouse : So what if he makes it? Tank : No one's ever made the first jump... Mouse : I know, I know...but what if he does? Apoc : He won't.

The answer to your question can be nothing but "Yes!", considering the definition of the word "enough".

Take a look at this video of a thermal camera filming an aluminium heatsink. In order for the camera to register the temperature of the metal, the guy needed to put some sticky tape on it. The bare metal is just reflecting the temperature from ambient objects, or the room itself. So, if the camo suit is some sort of IR mirror that reflects the ambient temperature, it would be hard for a thermal camera to spot anyone wearing it, regardless of the actual temperature of the material.

Metals are reflective in IR, so a bare metal object will not show its own temperature when viewed with a thermal camera, but the temperature of its surroundings. Basically it acts just like a mirror. I don't know if this think works on this principle, but it looks like i might.

He's handling a camera. It's obviously a film set. Illuminati confirmed. The hazmat guys are reptilians that came down in the X37 and still haven't had a chance to posses a human body.

I completely forgot about this launch! Now seen the webcast and I have to say this is, by far, the best camerawork so far. Stage separation was awesome. I do wonder what kind of equipment they used to get that shot at 100+ km... Also, first stage telemetry all the way down, which makes me convinced Elon Musk is following these forums... JK, ofc

Not much... It takes (including the Steam thing that precedes everything): 0:18 to Squad monkey 1:15 to main menu 1:33 to Space Center

If nation A has the capability to turn an asteroid into a weapon, then nation B certainly has the capability to nudge it off course, potentially towards the nation A. After all, the dv to redirect an asteroid from its natural orbit into a collision with Earth is surely orders of magnitude larger than a nudge needed for a nearmiss, or just a target change.

I don't consider our technical capabilities relevant. This is a thought experiment, a what if situation. Arbitrary propulsion technology is available, since we certainly don't have the capability to chuck anything sizable into the Sun. I was thinking of a difference between just dropping something stationary (orbital speed = 0) in free fall towards the Sun from the height of Earth's orbit, vs giving it a decent push. I don't know, maybe pushing would make things worse. Perhaps it would be better to brake once you start experiencing significant ablative damage to your heat shield.

"Survival" is a matter of perspective. Anything big enough can exist long enough to reach the surface of the Sun. It's just a matter of adding more and more material until you have enough of it so it doesn't have enough time to burn off while approaching it. Throwing it faster would also help.