May 162013
 

Question by DJ: How do you do this science question?
I my science practice booklet for physics, there’s a question that says “Give an example of something with a forward velocity experiencing a negative acceleration”
I thought all negative directions were objects accelerating backwards, please help!!
Thanks.

Best answer:

Answer by Miranda
a car slowing down as it approaches a red light

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May 132013
 

Question by Scientist04: Has anyone ever worked in a rat lab and had to kill rats for science?
I just got a job in a neuroscience lab and I’ve never killed a rat for science before? I have to put them in a gas chamber and cut off their heads. Does it get easier over time? Any pointers for getting over the shock?

Best answer:

Answer by artistandmuse
Yes it will get easier.

I have killed rats before and it bugged me the first time but then I got used to it.

@@@@@

There are no pointers on how to get over killing animals, you just do it and after a couple of times it will stop bugging you.

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May 122013
 

Question by MMS: What science bracket does the study of Atoms fall into?
Okay a weird and possibly obvious question but what science bracket, out of Physics, Chemistry or Biology, dose the study of atoms fall into? By study of Atoms i mean things like there structure and behavior.

I’m asking because i have two different revisions books, made by different company’s, one which says Atoms are chemistry, another saying its physics. The same is for the web, all saying different things.

So yeah, if you could clear this up i would be grateful! =]

Best answer:

Answer by Maxwell
atoms fall under physics and chemistry, both atoms, atomic structure and behavior are all involved, for example how electrons behave in an electric current (physics) and the atomic structure of specific elements (chemistry)

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May 062013
 

Question by Mainland Mutt: Quantum Theory and Non-Local Consciousness: Science or Pseudoscience?
Quantum mechanics leads to many different interpretations influenced by philosophy. Is the idea of non-local, universally accessible consciousness that transcends the limits of observation supported by any verifiable science? If not, is it because of the unobservable nature of private experience or is it because these ideas are philosophical with out any scientific support? I have done some basic research, but the science is too complex for me to decipher what is plausible according to science and what is simply philosophy unrelated to science. Please provide sources to back your claims if possible.

Best answer:

Answer by Captain Sarcastic
Pseudoscience. What you describe is an all-too-common subornation of actual quantum physics, misunderstood, and put to use to serve as an excuse to believe in all sorts of magical nonsense.

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Apr 092013
 

Question by Storman Norman: Does anyone know any good science books for high school or college kids?
I’m a sophomore in high school but I have a strong interest in science, especially chemistry and physics. I have taken high school chemistry, and a little bit of college chemistry, but I have no experience in physics other than reading books. If anyone knows of any good books that I would understand and would be interesting, that you would be great. thanks!

Best answer:

Answer by ChemTeam
Four books from my personal library (one non-science). None of them are that technical, although my view may be skewed by the fact that I’m a bit more knowledgeable than you are right now. Consider going to a used bookstore and looking through their science section. You might find something of interest. If someone suggests an interesting title and it’s out of print, try Abebooks at:

http://www.abebooks.com/

On the non-science side, I just finished this book:

“Shackleton’s Forgotten Expedition: The Voyage of the Nimrod” (Beau Riffenburgh) ISBN = 9781582346113.

It’s about Shackleton going to Antarctica in 1907-1908 and getting to within 97 miles of the South Pole. Amazing stuff!

Here’s the science stuff with some summaries I found:

1) From X-Rays to Quarks: Modern Physicists and Their Discoveries (Emilio Segre) ISBN = 9780716711476

Summary: A Nobel Laureate offers impressions and recollections of the development of modern physics. Rather than a chronological approach, Segrè emphasizes interesting, complex personalities who often appear only in footnotes. Readers will find that this book adds considerably to their understanding of science and includes compelling topics of current interest. 1980 edition.

2) From Falling Bodies to Radio Waves: Classical Physicists and Their Discoveries (Emilio Segre) ISBN = 9780486458083

Summary: Hailed by the “Journal of the History of Astronomy” as “charming and witty,” this chronicle by a renowned physicist traces the development of scientific thought from the works of the “founding fathers” — Galileo, Huygens, and Newton — to the more recent discoveries of Maxwell, Boltzmann, and Gibbs. 1984 edition.

I’ve been meaning to read this one for several years. I think you’ve spurred me to pick it up very soon.

3) Why the Sky Is Blue: Discovering the Color of Life (Gotz Hoeppe) ISBN = 9780691124537

Summary: Why is the sky blue?
Parents don’t know what to say when their children ask.
“Why the Sky Is Blue” answers this ancient and surprisingly complex question in a more entertaining and accessible way than ever before. Götz Hoeppe takes the reader on a historical and scientific journey to show the various ways people in different times and places have explained why the sky looks blue. The richly illustrated story begins with ancient myths and philosophy and ends with the cutting-edge science of optics, statistical physics, and ozone depletion. Most importantly, it is the story of how scientists discovered that the sky’s blue depends on life on Earth and the makeup of our planet’s ozone layer. Without microbial life’s impact on the composition of the atmosphere, the clear daytime sky would probably lack its distinctive color. And without the ozone, the twilight sky’s color would also be very different–not the sapphire tone of “l’heure bleue”, but rather a yellowish or greenish hue.
“Why the Sky Is Blue” shows that skylight can be viewed from a surprising variety of vantage points. We learn how our physiology and cognitive capacities govern our perception of the sky’s color. And we discover why this everyday experience has been such a source of fascination and controversy over the centuries.
Delightful and intriguing, “Why the Sky Is Blue” shows how the attempt to answer this age-old and deceptively simple question only enhances the magic of the blue sky we see above us.

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Mar 142013
 

Question by Faith: What is the difference between biological science and physical science in the MCAT?
if Biological science is the study of the cell/biology and includes chemistry!
then physical science would be all PHYSICS?!!!!! I hope not :(

Best answer:

Answer by CPlusPlus Guru
“The Physical Sciences section assesses problem-solving ability in general [ie. inorganic] chemistry and physics and the Biological Sciences section evaluates these abilities in the areas of biology and organic chemistry.”

“The Physical Sciences section is administered first. It is composed of 52 multiple-choice questions related to general chemistry and physics. Exam takers are allotted 70 minutes to complete this section of the exam.”

The Physical Sciences section is in multiple-choice format, so it shouldn’t be too hard. Still, you should study, alone or with a tutor.

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Mar 092013
 

Question by CowBlow: If one is not ‘good’ in math, would it still be wise to get a PHd in Science or make it a hobby?
Should I make Science biology, chemistry, astronomy, earth science and physics by reading every book and doing things on my own or go get PHd ..

Best answer:

Answer by O7
YUO GOTZ TO BE RAD IN DA MATHZ YO

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Feb 262013
 

Question by ceasarm: Physics science fair experiment I can do with my car?
I need some ideas that I can do for my AP physics science fair that is due in January. I am willing to do anything physics related with my car. I drive a small mazda protege. Any ideas is appreciated. I would like it to be moderately difficult science fair, not something too simple. I’m willing to spend money on this, but no modifications on my car though.

Best answer:

Answer by brittney
prove once and for all that using the cigarette lighter socket to charge trickle charge the cars battery with a solar panel doesnt work. You will need a solar panel capable of producing 12 to 14 volts approx 1amp, a working cigarette lighter socket in the car, a good source of light and a voltmeter. Plug the solar panel into the socket and place it in bright light. pop the bonnet of the car and check the voltage at the battery. If accessory is turned on then the voltage of the battery will slowly rise. If accessory is turned off and the key removed and the vehicle locked, which is law , then the voltage will not increase. The reason is simple . The socket is wired through the accessory circuit of the car and is open circuit when the key is turned off. So how can a solar panel boost charge when you are not at the vehicle? as advertised by many solar panel salesmen. can’t unless the cigar socket is rewired to the constant power . good luck.

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Feb 192013
 

Question by kramback123: What’s your favorite science subject and why?
I love science, particularly theoretical physics and cosmology. What about you?

Best answer:

Answer by sosickofred
psychology because I think the human mind is the most interesting thing in the world.

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