Good one. DB is just bragging. The more correct (but far less useful) version of the equation is PV^y = nRT, which accounts for non-ideal properties of gases.
You are right about hat form. Funny how just rearranging the variables can remove a needle from a haystack.
I only used the more complicated form a little, long time ago, when doing some 1-D modeling of multiphase fluid systems, and wanted to account for fluids (refrigerants) that I didn't have tables for.
I take issue with the questions about the graph showing a correlation between sugar and cavities. Their answer is it shows "the more sugar people eat, the more likely they are to get cavities." I understand what they mean, but this sounds like they're saying post hoc ergo propter hoc. We don't know from the graph if there is a third factor that causes people to eat sugar and get cavities. Maybe the people who eat more sugar also eat less of some vitamin, and the lack of that vitamin leads to cavities.
I know the scientific evidence is sugar causes cavities, but based only on that graph we cannot tell if eating more sugar makes someone more likely to get cavities.
The answer as stated only says there's a correlation, which is what the graph shows. It doesn't say that either one causes the other. Granted, it would have been more thought-provoking if they'd worded it "The more cavities people have, the more likely they are to eat sugar."
"the more sugar people eat, the more likely they are to get cavities." This statement, in my reading, implies if members of the same cohort changed no variables other than sugar consumption, it would change their rate of cavities. This means causal correlation.
I have always disliked multiple-guess questions. Occasionally the correct answer is "none of the above" or perhaps "both number 2 and number 4". The cell-phone question has both sound and radio as correct answers, and you have to understand that "sound" is, "Um, yes, correct, but it's not what we wanted you to say."
Multiple guess is popular because it is easy to grade, and easy to defend in disputes about grading.
Someone's vulnerability to cavities depends primarily on secreator status; def. if every fluid in the body not just your blood expresses your blood type antigens then you are a secreter and less vulnerable to cavities, but might also react adversely to viruses more easily. Non secretors...just the opposite, most, no matter what you do, you get cavities. Yes, your immune system battles tooth decay if it is expressed in saliva.
Live right 4 your type by Peter DaDamo is where I got this info You can also go to: right4yourtype.com to get the book. Or here is a quick article on the subject. http://www.dadamo.com/B2blogs/blogs/i... Actually cavities have little to do with sugar per say, there are other factors to consider.
Thank you for the links. I will do some research, but I have to disagree with your statement that sugar has little to do with cavities, although I agree it is only one factor.
Real sugar kane was not quite the villain it was touted to be, although, sugar, real, processed, fake or from corn is not good for any of us, especially non-secretors. Cavities are usually caused by germs and germs LOOOOOVE sugar. Excess Citrus is also bad for your teeth but is not fully responsible for cavities either. All this stuff, I founded out waaaaay to late in life. Oh well...
Every time I go to a dentist I'm told to brush a different way. After many decades I gave up and brush about six times a day using all techniques. But since I got a folding toothbrush and copied the lead of Jack Reacher not a single problem. I didn't know about citrus i do a grapefruit and two oranges a day. Down here we get the real cane sugar but i switched to stevia.
Seriously, six times a day and for sure after eating is not too excessive. Followed by a good mouth wash. As the others said it's 'germs and bacteria.'
Try this... 1) Four or five heaping tablespoons of cocoanut oil 2) one teaspoon baking soda 3) Stevia to taste 4) a few drops of peppermint extract to taste 5) a few drops of lemon extract to taste
Mix the whole mess together and brush twice daily. I've been using this for a year or so now, no cavities and my teeth have never felt cleaner. The bonus is no fluoride!
Thanks! coconut oil is an easy find here and I have the rest. Some altoid tablets and some real lemons. The stevia comes amazon in 1000 packets to a box size.
some of the questions in the poly science test were pure guesswork. I didn't find that to be true in this science test although i still think distance was a better answer to the speed of light question. As for the volume of sound wasn't it Planck that pointed out sound gets louder as it 's closer and loses volume as it grows more distant due to sound waves ? I'm open to improvement though. I'll have to re read that section. Maybe I just descrived amplitude without knowing i had done so. Or maybe I just don't know from nuttin!
MA, the sound-volume thing is the Inverse Square Law, describing how sound, light, radiation and other stuff like that spread out the energy they're carrying over increasing distances, areas or volumes (depending on what the source and the medium are.)
And the Doppler Effect describes the change in Apparent Frequency of sound, light, radio, etc., waves, depending on whether YOU or The Source are moving towards each other or apart.... the old train-whistle example.
Don't know how I did...my popup blocker kept the page from showing the results and when I disabled it, the page gave me an error message. That must have been the REAL test!
Hello blarman, 12 of 12 correct! :) I found it to be a relatively easy and fun quiz. I love science. One confession: I could not recall the name of the developer of the polio vaccine, but thorough process of elimination I was able to deduce the correct choice. Respectfully, O.A.
Gee that was easy. Not a test, IMO. A test of reasoning then? How well do we do there?
Given the following two statements as premisses: Logic is difficult, or not many students like logic. If mathematics is easy, then logic is not difficult.
is it valid to conclude: 1)that mathematics is not easy, if many students like logic? 2)that not many students like logic, if mathematics is not easy? 3)that logic is not difficult, or mathematics is easy? 4)that mathematics is not easy, or logic is difficult? 5)that logic is not difficult, or mathematics is not easy? 6)that logic is difficult, or mathematics is easy? 7)that if not many students like logic, then (a)mathematics is not easy, or (b) logic is not difficult?
Got all of them right. This was pre high school information back in the dark ages when I learned it. [If you are curious about just when those dark ages were, do the math. I was in one of the first groups of elementary school kids to receive the Salk Polio Vaccine. I suppose this might qualify me as, "crusty," had I not been known to bathe regularly.] Newsflash! Students are STILL being intensively exposed to this information in upper elementary. Well...at least in the schools in those allegedly 'inferior' southern states where I was educated and still reside. Actually, the state & locally developed science 'common core' curriculums in these states are teaching more advanced physical science concepts than this at middle school levels It's not the quality of the curriculum anymore; it's the quality and motivational level of the students. Too many of them don't understand the concept of serious study, and teachers are kept too busy confiscating the high tech gadgets that serve as both their memory and entertainment. It's like the old saying goes with respect to learning anything, "First you have to give a shit."
two wrong. I tried the political status one and found the answers were apples and oranges not either or. But the science one was very good and well worth the time.
Questions were pretty basic...took an educated guess on the polio one and got it right. 12 for 12 see link if you like but even though they were easy I still surprised myself.
12 of 12, except that they (1) postulated an incorrect predicate when they said "... how the positions of the stars and the planets can affect human life," and (2) they inserted "race" as a category when "race" was not requested in the questions.
this tells me that Pew Research is leftist. -- j .
Previous comments...
Just teasing DB. You probably know this too.
I only used the more complicated form a little, long time ago, when doing some 1-D modeling of multiphase fluid systems, and wanted to account for fluids (refrigerants) that I didn't have tables for.
.
I take issue with the questions about the graph showing a correlation between sugar and cavities. Their answer is it shows "the more sugar people eat, the more likely they are to get cavities." I understand what they mean, but this sounds like they're saying post hoc ergo propter hoc. We don't know from the graph if there is a third factor that causes people to eat sugar and get cavities. Maybe the people who eat more sugar also eat less of some vitamin, and the lack of that vitamin leads to cavities.
I know the scientific evidence is sugar causes cavities, but based only on that graph we cannot tell if eating more sugar makes someone more likely to get cavities.
I got 12/12.
This statement, in my reading, implies if members of the same cohort changed no variables other than sugar consumption, it would change their rate of cavities. This means causal correlation.
Multiple guess is popular because it is easy to grade, and easy to defend in disputes about grading.
"When in doubt C out"
You can also go to: right4yourtype.com to get the book.
Or here is a quick article on the subject.
http://www.dadamo.com/B2blogs/blogs/i...
Actually cavities have little to do with sugar per say, there are other factors to consider.
All this stuff, I founded out waaaaay to late in life.
Oh well...
Seriously, six times a day and for sure after eating is not too excessive. Followed by a good mouth wash. As the others said it's 'germs and bacteria.'
And a new toothbrush
Try this...
1) Four or five heaping tablespoons of cocoanut oil
2) one teaspoon baking soda
3) Stevia to taste
4) a few drops of peppermint extract to taste
5) a few drops of lemon extract to taste
Mix the whole mess together and brush twice daily. I've been using this for a year or so now, no cavities and my teeth have never felt cleaner. The bonus is no fluoride!
But what is the bit about guessing?
And the Doppler Effect describes the change in Apparent Frequency of sound, light, radio, etc., waves, depending on whether YOU or The Source are moving towards each other or apart.... the old train-whistle example.
Cheers!
That must have been the REAL test!
12 of 12 correct! :) I found it to be a relatively easy and fun quiz. I love science. One confession: I could not recall the name of the developer of the polio vaccine, but thorough process of elimination I was able to deduce the correct choice.
Respectfully,
O.A.
Given the following two statements as premisses:
Logic is difficult, or not many students like logic.
If mathematics is easy, then logic is not difficult.
is it valid to conclude:
1)that mathematics is not easy, if many students like logic?
2)that not many students like logic, if mathematics is not easy?
3)that logic is not difficult, or mathematics is easy?
4)that mathematics is not easy, or logic is difficult?
5)that logic is not difficult, or mathematics is not easy?
6)that logic is difficult, or mathematics is easy?
7)that if not many students like logic, then (a)mathematics is not easy, or (b) logic is not difficult?
YES or NO
1)
2)
3)
4)
5)
6)
7)
12 for 12 see link if you like but even though they were easy I still surprised myself.
http://www.pewresearch.org/quiz/scien...
sented myself as a scientist.
when they said "... how the positions of the stars and the planets
can affect human life," and (2) they inserted "race" as a
category when "race" was not requested in the questions.
this tells me that Pew Research is leftist. -- j
.