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United States24745 Posts
On July 08 2010 05:28 exeexe wrote:
masterofchaos, no it is correct, i looked it up before i posted it. Never heard of pushing water before, but funny and nice try ^^
edit: right i hate to be wrong but none of us is right anyway: upon further looking deeper into it i found this frase to be the truth:
One joule is defined as the amount of work done by a force of one newton moving an object through a distance of one metre
What i dont get then, is if you move something 1 meter, there would be resistance like friction or air resistance and even if you put it into space and there are no external forces like gravity you should only give it a very tiny tip and it will move 1 meter with easy, and this little tip can be less than equelevant to 1 joule.
? can you explain that?
edit: ok i get it now
It was kind of strange that Klockan3 specified that water was being pushed... and how much of it... but it's not really incorrect. It's 1 Newton a distance of 1 meter. W=FD, J=N*m
You say you get it now but didn't explain it... in case you are wrong or other people needs help the reasoning:
If you push something where there is no friction such as outer space then there wouldn't be any F in the formula W=Fd so there wouldn't be any W in Joules.
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On July 08 2010 06:57 RifleCow wrote:
I mean, just look at the measurement of angles: the degrees system is alot easier because 360 is very divisible number, but radians is the better but harder to use measurement because it is more usable in mathematical equations.
The divisibility of 360 is important, but I suspect the fact that common measurements (like that of a right angle) are rational numbers has more to do with it being more popular.
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You guys may not know this but in mandarin chinese the spoken date is month, day, year.
Although I cant remember the written. I think its written in day month year
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On July 08 2010 07:19 micronesia wrote:Show nested quote +On July 08 2010 05:28 exeexe wrote:
masterofchaos, no it is correct, i looked it up before i posted it. Never heard of pushing water before, but funny and nice try ^^
edit: right i hate to be wrong but none of us is right anyway: upon further looking deeper into it i found this frase to be the truth:
One joule is defined as the amount of work done by a force of one newton moving an object through a distance of one metre
What i dont get then, is if you move something 1 meter, there would be resistance like friction or air resistance and even if you put it into space and there are no external forces like gravity you should only give it a very tiny tip and it will move 1 meter with easy, and this little tip can be less than equelevant to 1 joule.
? can you explain that?
edit: ok i get it now It was kind of strange that Klockan3 specified that water was being pushed... and how much of it... but it's not really incorrect. It's 1 Newton a distance of 1 meter. W=FD, J=N*m You say you get it now but didn't explain it... in case you are wrong or other people needs help the reasoning: If you push something where there is no friction such as outer space then there wouldn't be any F in the formula W=Fd so there wouldn't be any W in Joules.
Yeah, sorry, I should have talked about acceleration but I tumbled around a lot with the definitions and got something really strange. I should have gone in smaller steps to keep it sane, like 1 Newton is defined as the force required to accelerate 1 kg 1 m/ss and from the definition of energy as force times path you get 1/2 joule is the energy required to accelerate 1 litre of water up to a speed of 1 m/s since 1 joule is what you get if you have 1 Netwon for 1 meter.
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1019 Posts
Yes I live in america and the metric system is way better than the american system. Its so annoying when I hear other americans trying to justify the american system usage. But the good news is that most schools are teaching metric system so hopefully our next generation of americans are competent in both metric and imperial
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On July 08 2010 19:00 caution.slip wrote:
You guys may not know this but in mandarin chinese the spoken date is month, day, year.
Although I cant remember the written. I think its written in day month year
I just went to China, and I saw it written Year Month Day quite a few times.
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Gotta go metric, I think its not even close. I'll admit though, I still use lbs for (human) weight instead of kg, from being too used to it.
C and F are similar enough, but I think Celsius is just nicer with 0 and 100 being benchmark figures.
Date is tricky.. I have no strong preference. Even if one has a nicer logic to it, its arbitrary and not really a strong preference. I guess Y.M.D (SI) or possibly DMY makes the most sense in terms of logical ordering.(ie ascending or descending by magnitude of time unit.) I think MDY got popular due to how people say it spelled out. Eg July 8th, 2010.
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I dont even know how many inches in a foot and how many feet in a yard. brb googling.
12 inches = 1 foot
5280 feet = 1 mile
1760 yard = 1 mile
1 yard = 3 feet
let's look at metric system
10mm = 1 cm
100cm = 1 meter
1000 meter = 1 km
I think those numbers speak for themselves.
Fahrenheit is stupid since it has body temperature as 100 but humans do not have a constant body temperature.
Celcius has 0 as freezing point of water and 100 as boiling point of water at 1 atmosphere iirc. Makes much more sense obviously.
and if you're still not convinced, no one uses that stupid system except america and some place called belize. everyone else has third grade common sense.
just wait until the US isn't a superpower anymore and not calling the shots. no one is going to put up with that bullshit anymore.
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so basically USA isnt more advanced in terms of advanced technology than this place called belizie.
+ Show Spoiler +
Telephones - main lines in use:
31,100 (2008)
country comparison to the world: 177
Telephones - mobile cellular:
160,000 (2008)
country comparison to the world: 175
Internet hosts:
3,017 (2009)
country comparison to the world: 142
Internet users:
34,000 (2008)
country comparison to the world: 178
https://www.cia.gov/library/publications/the-world-factbook/geos/bh.html
expand communication
around ~170th compared to the world.
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EPT
