One project that might be interesting for HS students would be RSA encryption. It's probably easier to implement in Maple than a low-level languate like C. At least that's what we learned it in this easy course I took, see project #2
AP CS AB is more advanced then first year CS at many universities. LOGO is too simple a language for an AP course. Also, I'd like to point out two things: 1) I wrote probably over 10,000 lines of code as a hobby in HS. 2) I was not able to get hired anywehere after HS. The jon market is not as good as some people will have you believe.
My HS AP course was more advanced then the first 3 or 4 semesters of AP courses at my school. This is true for most of the AP exams, first year college courses are generally easier. One thing about CS, is it's really best to learn programming on your own, not in a class. Students should try to take Calculus BC in addition to Computer Science AB. That way they'll have time for more advanced math courses in college to complement their CS major.
Some people in AP CS are only taking course 3. The programming projects are generally simpiler. When I took it, I think the hardest project was to make a 20-questions program that would save the database to disk. Another project I remember was the expression evaluator project, which could evaluate input strings something like: (+ (* 6 3) 4)
Back when I took it in '96, It was in Pacal, and we spent a lot of time on trees, linked lists, and sorting algorithms. It has since changed so C. This was for the 2-semester AB exam, there is also a 1-semester A exam.
My AP CS course at Ithaca High School was so hard, that we all easily got high 5s on the exam, it wasn't that boring.
Just put your buffer in it's own segment, and give it a certain length, and then if it goes over, a segment fault is generated, and it can allocate more buffers. That's how windoze works. Unix uses pages.
The way it works is that if you intergrate the force from a point particle around any boundary containing you get the same answer. This is a result from vector calculus. Think of the force as propagating outwards, in all directions equally. At a given distance the total of the force must be a constant. Hence, in 2-D it would be 1/r, and in 1-D it would be 1. This is perfectly accepted. Now the questionable part is about gravity not being 1/r^2 for small r.
Quantum mechanics allows energy to be borrowed from "nowhere" for brief periods of time. Energy causes space to curve (general relativity), and so at a scale of around planck's length (somewhere around 10^-30 m), it is predicted that space is no longer continious thanks to mini-black holes. However incredible dense energy is required for small black holes, the mass needed for a black whole with radius r is only order r^2, while (obviously) the volum is of order r^3.
10 spatial dimensions, and the math is quite complicated. These are used in GUT which attempt to explain electro-weak, strong, and gravitational forces in a single, unified theory, and the differences arrive from symetry breaking at conventional energies. However, at very large energies, like the first 10^30s after the big bang, they were all 1 force. It is speculated that as the universe changes, the laws of physics as we percieve them may change, but it's that for now, speculation.
Maybe you +5 posters should learn some physics. You can compare the effect of gravity to the effect of electrostatics on electrons, for instance, and electrostatics is [e^2/(4*pi*e0)]/[Gm^2] times stronger than gravity
Dude, you forgot to mention what units G is about 10^-11 in. And where you said weight the current term is mass. If gravity was stronger we wouldn't turn into pancackes because we'd evolve with gravity. The effect of gravity between 2 electrons is 4.167*10^40 times weaker than the electrostatic force, and for protons it's 1.23*10^24, they both depend on the inverse square of distance.
Last I knew, growing hemp was illegal in this country, thanks to the timber industry. Yeah, they gave the really lame excuse that it contains THC, but who the hell would smoke hemp? You'd have to smoke pounds to get stoned.
That's because cars are subsidized up the ass, and other forms of transportation aren't. Of course people like me can't afford to have a car, the main cost for someone like me (male under 25) is the insurance.
I remember there being an estimate that all the text and.html files on the internet are 44 TB. I'm guessing it's more than 150 TB counting all that porn and warez, and videos. My school (about 15k people) has 18 GB used on the main webserver for undergrads (there are others for undergrads too). I'm guessing at least 200 GB is used just for all my schools's pages. On a side note, for a split second I thought the article said "slashdotting the whole internet".
I didn't download the whole thing as it'd take over 5 hrs, but I determied that the compression ratio is about 75%, so it should be about 3 GB umcompressed, and is probably a text file consisting of A,G,C,Ts.
I know it makes some problems simpler, but how about this one: if I apply force F in x coordinates to particle at reset with mass m and x(0)=0 then x=ln(cosh(Ft/m)), where F/m is in terms of c/s, and x is in light-seconds. I took a senior-level course in relativity, and I don't think it was covered. Usually I learn mathematical concepts pretty fast, but it took me a while to get used to raising/lowering indices on tensors.
Somewhere I heard that race accounts for less than half of the the genetic difference between two humans, it's only a few genes that make racial differences.
Slashdot Mirror
One project that might be interesting for HS students would be RSA encryption. It's probably easier to implement in Maple than a low-level languate like C. At least that's what we learned it in this easy course I took, see project #2
AP CS AB is more advanced then first year CS at many universities. LOGO is too simple a language for an AP course. Also, I'd like to point out two things: 1) I wrote probably over 10,000 lines of code as a hobby in HS. 2) I was not able to get hired anywehere after HS. The jon market is not as good as some people will have you believe.
My HS AP course was more advanced then the first 3 or 4 semesters of AP courses at my school. This is true for most of the AP exams, first year college courses are generally easier. One thing about CS, is it's really best to learn programming on your own, not in a class. Students should try to take Calculus BC in addition to Computer Science AB. That way they'll have time for more advanced math courses in college to complement their CS major.
The AP exam exam switched from Pascal to C++ starting in '99.
I think hash tablers are a standard part of the AP CS AB curriculum.
Some people in AP CS are only taking course 3. The programming projects are generally simpiler. When I took it, I think the hardest project was to make a 20-questions program that would save the database to disk. Another project I remember was the expression evaluator project, which could evaluate input strings something like: (+ (* 6 3) 4)
My AP CS course at Ithaca High School was so hard, that we all easily got high 5s on the exam, it wasn't that boring.
Here is a link to the current exam description.
Maybe you mean 1997/1998?
Just put your buffer in it's own segment, and give it a certain length, and then if it goes over, a segment fault is generated, and it can allocate more buffers. That's how windoze works. Unix uses pages.
Light doesn't have mass, it does have energy, and so could in theory be converted to something with mass.
The way it works is that if you intergrate the force from a point particle around any boundary containing you get the same answer. This is a result from vector calculus. Think of the force as propagating outwards, in all directions equally. At a given distance the total of the force must be a constant. Hence, in 2-D it would be 1/r, and in 1-D it would be 1. This is perfectly accepted. Now the questionable part is about gravity not being 1/r^2 for small r.
Quantum mechanics allows energy to be borrowed from "nowhere" for brief periods of time. Energy causes space to curve (general relativity), and so at a scale of around planck's length (somewhere around 10^-30 m), it is predicted that space is no longer continious thanks to mini-black holes. However incredible dense energy is required for small black holes, the mass needed for a black whole with radius r is only order r^2, while (obviously) the volum is of order r^3.
10 spatial dimensions, and the math is quite complicated. These are used in GUT which attempt to explain electro-weak, strong, and gravitational forces in a single, unified theory, and the differences arrive from symetry breaking at conventional energies. However, at very large energies, like the first 10^30s after the big bang, they were all 1 force. It is speculated that as the universe changes, the laws of physics as we percieve them may change, but it's that for now, speculation.
Maybe you +5 posters should learn some physics. You can compare the effect of gravity to the effect of electrostatics on electrons, for instance, and electrostatics is [e^2/(4*pi*e0)]/[Gm^2] times stronger than gravity
Dude, you forgot to mention what units G is about 10^-11 in. And where you said weight the current term is mass. If gravity was stronger we wouldn't turn into pancackes because we'd evolve with gravity. The effect of gravity between 2 electrons is 4.167*10^40 times weaker than the electrostatic force, and for protons it's 1.23*10^24, they both depend on the inverse square of distance.
Last I knew, growing hemp was illegal in this country, thanks to the timber industry. Yeah, they gave the really lame excuse that it contains THC, but who the hell would smoke hemp? You'd have to smoke pounds to get stoned.
That's because cars are subsidized up the ass, and other forms of transportation aren't. Of course people like me can't afford to have a car, the main cost for someone like me (male under 25) is the insurance.
I remember there being an estimate that all the text and .html files on the internet are 44 TB. I'm guessing it's more than 150 TB counting all that porn and warez, and videos. My school (about 15k people) has 18 GB used on the main webserver for undergrads (there are others for undergrads too). I'm guessing at least 200 GB is used just for all my schools's pages. On a side note, for a split second I thought the article said "slashdotting the whole internet".
I didn't download the whole thing as it'd take over 5 hrs, but I determied that the compression ratio is about 75%, so it should be about 3 GB umcompressed, and is probably a text file consisting of A,G,C,Ts.
85%? Maybe that's a rat.
I know it makes some problems simpler, but how about this one: if I apply force F in x coordinates to particle at reset with mass m and x(0)=0 then x=ln(cosh(Ft/m)), where F/m is in terms of c/s, and x is in light-seconds. I took a senior-level course in relativity, and I don't think it was covered. Usually I learn mathematical concepts pretty fast, but it took me a while to get used to raising/lowering indices on tensors.
Funny, we also share 99% of our genes with pygmy chimps. Maybe ut's not really the _human_ genome.
Somewhere I heard that race accounts for less than half of the the genetic difference between two humans, it's only a few genes that make racial differences.
That must be why I think it's so wrong, I work for a high-energy physics prof.
Your energy formula isn't quite right (it's somewhat more complicated than that), but at least you got the correct momentum formula.