Mini-math puzzle: given two gravitational bodies of masses m1 and m2, separated by r units, what's the "halfway" point where the gravitational force is 0?
@CᴏɴᴏʀO'Bʀɪᴇɴ Gravitational force is F = G*m1*m2/r^2. G is a constant and can be ignored here. The mass of whatever object at the midway point doesn't matter.
(Not sure why this was downvoted and flagged, as this comes DIRECTLY FROM A PROGRAMMING CONTEST.)
found a cool problem on an algorithmic site and I describe it here.
https://www.reddit.com/r/programmingchallenges/comments/3z3g23/problem_with_cars_and_queries_details_within_too/
If anyone has a...
To all vote-to-close people: it appears that the crux of the problem with my Egg drop challenge is that my challenge doesn't have an upper limit, and therefore every entry must target the given input
Funny thing is, two other students (out of five) also got that problem wrong, and also for simple algebra/calculation errors, and yet all three mistakes were different!
> For example, suppose an ordinary die is thrown repeatedly until the first time a "1" appears. The probability distribution of the number of times it is thrown is supported on the infinite set { 1, 2, 3, ... } and is a geometric distribution with p = 1/6.
I'm looking at basically your equation, and I'm thinking that maybe angles is a better way to go about this.
@Maltysen I don't think that's right. Consider the equilibrium point we found earlier and its corresponding point on the opposite side of the smaller mass.
There's only one equilibrium point, yes, but there's another point that's colinear with the gravitational bodies where the forces are equal, but in the same direction.
@Maltysen If you actually consider the gravitational bodies to be moving, and if the second is significantly smaller than the first, then those would be the Lagrangian points.
It's not necessarily the place where the gravitational force is equal from both the Earth and the Sun. Only the place where the combined force and sideways velocity correspond.
What do each of those terms mean? R = radius, sin and cos I know, t is time, i and j are - I assume - the basis vectors (+x and +y, respectively), and w is period?
Golfscript and J are long-known, well-discussed, and accepted: fine, so if you want to understand the top submission to every challenge, you'll need to learn these two. Then CJam and Pyth turned up. Oh well.
But it doesn't end there: we now see Jolf and Matl and Vitsy and whatnot. Nobody can be ...
I'm sick of seeing the same damn meta discussion every month
I'm actually secretly hoping that someone designs a golfing language so good that the usage of the other golfing languages dies down and people would stop complaining about all the answers being in different golfing langs
(Not sure why this was downvoted and flagged, as this comes DIRECTLY FROM A PROGRAMMING CONTEST.)
found a cool problem on an algorithmic site and I describe it here.
https://www.reddit.com/r/programmingchallenges/comments/3z3g23/problem_with_cars_and_queries_details_within_too/
If anyone has a...
