The Official "Quick Question" Thread

[Xittenn]

1) This would depend on what the internals of the transducer was comprised of........there are a number of symbols that could be used. If it used induction a coil would be appropriate, if it used piezoelectric crystals there are transistor symbols appropriate to this case, looking at wiki one of these Wheatstone Bridge!

 

2)Look up boolean algebra........................

[Mr Skeptic]

Looks like it says, 1 + 0 = 01. What would it take for each of the digits to end up as 1 or 0? Could you design one of these with two 2-digit inputs and a 3-digit output?

[cameron marical]

Could you design one of these with two 2-digit inputs and a 3-digit output?

 

You could add an extra wire without a signal (0), as is, I beleive, {just learned yesterday} used in full adders.

[forufes]

people die of dehydration when they are moored at sea.

 

i've tasted sea water, and it's salt, but i'd drink it if i was gonna die of thirst.

 

is there something missing here?

[Sayonara]

It takes more water to excrete the gained salt from your body than you acquire by drinking the seawater in the first place.

[forufes]

It takes more water to excrete the gained salt from your body than you acquire by drinking the seawater in the first place.

holy!

can i have a link to that?not that i doubt you i just wanna read more about it.

also, isn't the amount of water used to excrete salt(i.e the ratio of water to salt volume), not fixed?

iow, at such cases of emergency, wouldn't the body minimize the amount of water it uses to absorb whatever it absorbs?

i mean, your pee isn't always the same shades of yellow now is it?

[Moontanman]

Drinking sea water will kill you if you drink enough of it, it does taste funky too, i swim in the ocean quite a bit and it's nasty....

 

 

http://en.wikipedia.org/wiki/Seawater

 

 

Accidentally consuming small quantities of clean seawater is not harmful, especially if the seawater is consumed along with a larger quantity of fresh water. However, drinking seawater to maintain hydration is counterproductive; more water must be excreted to eliminate the salt (via urine) than the amount of water that is gained from drinking the seawater itself.[7]

 

This occurs because the renal system actively regulates human blood’s sodium chloride within a very narrow range around 9 g/L (0.9% by weight).[citation needed] Drinking seawater (which contains about 3.5% ions of dissolved sodium chloride) temporarily increases blood’s concentration of sodium chloride.[citation needed] This in turn signals the kidney to excrete sodium, but seawater’s sodium concentration is above the kidney’s maximum concentrating ability.[citation needed] Eventually the blood’s sodium concentration will rise to toxic levels, removing water from all cells and interfering with nerve conduction, ultimately producing fatal seizure and heart arrhythmia.[citation needed]

[hypervalent_iodine]

people die of dehydration when they are moored at sea.

 

i've tasted sea water, and it's salt, but i'd drink it if i was gonna die of thirst.

 

is there something missing here?

 

 

You should also look up the principles of osmosis. Drinking sea water will actually dehydrate you faster. If you had some basic equipment, you could set up a still and remove the salt before you drink it.

 

 

[Svetoslav Pavlov]

So, what is the weight of Earth ?

[CaptainPanic]

So, what is the weight of Earth ?

The mass of Earth (not: weight) is 5.9736×10^24 kg

 

http://en.wikipedia.org/wiki/Earth

[dragonstar57]

does whole milk + evaporated milk=heavy cream?

[Xittenn]

Wiki says water will do just fine

[SMF]

Whole milk is what is left over after removing most of the butter fat so that it has 3% to 4% fat (depending on the country). Condensed milk has the milk proteins of milk concentrated and the fat content is around 7%. Heavy cream, in the US, has at least 36% fat. There are various recipes for mixing condensed milk, whole milk, and thickeners to replace heavy cream in cooking, but in my opinion the flavor suffers greatly. Your mileage may vary. SM

[Xittenn]

Sorry I read that "does whole milk + evaporated milk = milk?"

[dragonstar57]

what do you do if you don't know what category to put a thread in ex: http://www.scienceforums.net/topic/54467-best-way-to-convey-information/page__p__586541#entry586541

Edited January 30, 2011 by dragonstar57

[Mr Skeptic]

what do you do if you don't know what category to put a thread in ex: http://www.sciencefo...541#entry586541

 

Just take your best guess. Some things no one really knows what category they belong to, and some clearly belong in multiple categories. Sometimes you pick the category as part of directing which way the discussion should go, for example putting a biochem question in biology or chemistry would give different directions.

[dragonstar57]

i was looking at the thread http://www.scienceforums.net/topic/36998-whats-a-good-programming-language-to-learn/

and its a little overwhelming with information and doesn't exactly answer my question

how do you learn programing for free and from where.(i understand that there are many languages)

(links to resources would be appreciated)

I'm not looking to be able to do anything specific i just think programing sounds cool and would like to start learning about it but the stuff that most people talk about on here sounds a little to serious.

i have a little experience with qbasic but not much mostly print, if then, etc

[Cap'n Refsmmat]

http://www.python.org/about/gettingstarted/

[dragonstar57]

http://www.python.org/about/gettingstarted/

the beginners guide or the non programer beginners guide? http://wiki.python.org/moin/BeginnersGuide/NonProgrammers

oh and i know quite a bit of HTML (will that help)

Edited January 31, 2011 by dragonstar57

[Cap'n Refsmmat]

HTML is not a programming language.

 

You definitely want the non-programmer's version for a good introduction.

[dragonstar57]

HTML is not a programming language.

 

You definitely want the non-programmer's version for a good introduction.

your site linked to another site http://openbookproject.net/thinkcs/python/english2e/preface.html

print "Hello, World!"

lol i remember using that exact code in QBASIC

but they linked to a online textbook but i don't see a compiler or anything like that

Edited January 31, 2011 by dragonstar57

[Cap'n Refsmmat]

your site linked to another site http://openbookproje...2e/preface.html

 

lol i remember using that exact code in QBASIC

but they linked to a online textbook but i don't see a compiler or anything like that

Go back to the Python site:

 

http://www.python.org/about/gettingstarted/

 

There's an "Installing" section that tells you what to do.

[dragonstar57]

Go back to the Python site:

 

http://www.python.org/about/gettingstarted/

 

There's an "Installing" section that tells you what to do.

 

what is the syntax error in

$python myfirstprogram.py

Edited January 31, 2011 by dragonstar57

[Cap'n Refsmmat]

Well, I'd have to see what's inside myfirstprogram.py, wouldn't I?

[dragonstar57]

Well, I'd have to see what's inside myfirstprogram.py, wouldn't I?

i started a thread about it http://www.scienceforums.net/topic/54487-python-help/page__gopid__586805#entry586805