Science & Mathematics - 17 February 2007

9 less than y

the translation is?

2007-02-17 20:43:15 · 6 answers · asked by Anonymous in Mathematics

answer must be for 7th standard child.

2007-02-17 20:39:36 · 2 answers · asked by wamiq g 1 in Weather

please answer again!!!thnx!!!

1. the actual amount of light given off by a star is its ___________________.

2.one example of a _________ binary is algol.
3. within a spectroscope,a _________ breaks up light into its color.
4. the ___________ the starting mass of a star, the longer it will live.
5. a _________ in a star's spectrum indicates that the star is moving toward the earth.


thnx!!!!!!!

2007-02-17 20:35:22 · 3 answers · asked by My_Girl 2 in Astronomy & Space

2007-02-17 20:32:56 · 1 answers · asked by Anonymous in Chemistry

Suppose that an airplane passenger whose itinerary requires a change of airplanes in Ankara,Turkey,has a 4% chance of losing each piece of his or her luggage independently.Suppose that the probability of losing each piece of luggage in this way is 5% at Da Vinci airport in Rome, 5% at Kennedy airport in New York, and 4% at O'Hare airport in Chicago.Dr.May travels from Bombay to San Francisco with one piece of luggage in the baggage compartment. He changes airplanes in Ankara,Rome,NewYOrk, and Chicago
(a)If the luggage does not reach his destination with him, what is the probability that it was lost at Da Vinci airport in Rome?

2007-02-17 20:30:44 · 2 answers · asked by quz_us 1 in Mathematics

how many bones does a human skeleton have?

2007-02-17 20:29:32 · 3 answers · asked by melanie s 2 in Biology

Hey , i'm doing this chem prac , and i cant figure out the answer to this bonus question.

The prac im doing is basically about the Law Of Conservation of mass, by mixing Silver nitrate with Potassium Iodide to form Potassium Nitrate + Silver Iodide, weighing them before and after. (i understand the law of conservation of mass and everything, i got the same weights before and after)

But i cant work out the answer to this question:
When the flask containing the Silver nitrate with Potassium Iodide is placed on the weighing balance the moment the reaction started, it is noticed that the mass fluctuates and drops during the reaction process. Why does this happen? (state the reasoning behind and what is happening on atomic/intermolecular level)

I'm thinking it has something to do with atoms breaking rejoining and vibrating against each other, causing the mass to change? Can someone explain to mewhats happenin on an ATOMIC level, containing KEY TERMS and important details?? Thanks

2007-02-17 20:26:09 · 5 answers · asked by newequilibrum85 2 in Chemistry

sin theta= opposite/adjacent....can i use this formula for triangles other than right triangles?

2007-02-17 20:26:09 · 5 answers · asked by Anonymous in Mathematics

I am an electrical engineering student working on digital circuit design. I have some limited time and can learn any one thing. What do u recommend?

2007-02-17 20:20:47 · 9 answers · asked by Cligztraizt 1 in Engineering

If yes, then please send, if you can, photos or a site that I can find photos of him.

2007-02-17 20:16:33 · 7 answers · asked by Bill 1 in Other - Science

When we talk about the result of a particular event, we only put forward our opinion on the possibility of the most probable result. But we are never exactly 100% sure on the occurrence of our opinion, are we? For example, if we agree with the statement, “A dog will NEVER be able to learn physics”, we are only posting our opinion on it, about which we are 99.95 % certain (say), but not 100% certain. In fact, I don’t think it will ever be possible for us to be absolutely 100% certain about the occurrence of a particular event, because the Theory of Everything, as it is (or rather, would be) called, which, if stated, would take care of ALL the Sciences, has not been formulated yet.

As another ‘physical’ example, we can also never be 100% sure when we say, “The velocity of this body is 43.784 m/s”; we can only be sure to a certain extent, say 99.998%, beyond which it is not possible to ascertain the velocity. And this is not because of experimental errors, or errors in measurement, etc; in fact, this is an inherent property of ANY event that we can never predict or measure it with exactly 100% accuracy. So, words like “exact, “precise”, absolute”, etc lose their significance in the realm of this thought & discussion. In that case, can we postulate a General Principle of Uncertainty, which would say, “It is impossible to determine the occurrence of any event with absolute certainty, unless it is a definition.” ? I use the word ‘definition’ ‘coz if we define an event, it has got to be 100% certain. For example, when we say, “A meter has 100 centimeters”, we are exactly 100% certain about its validity, as a meter is defined that way. But we are not 100% sure about the validity of the statement, “He has walked 100 meters today.”

Hope you understand what I mean? Any comment(s), criticism & correction (in case I’m wrong somewhere) are welcome.

2007-02-17 20:12:02 · 7 answers · asked by Kristada 2 in Physics

When we talk about the result of a particular event, we only put forward our opinion on the possibility of the most probable result. But we are never exactly 100% sure on the occurrence of our opinion, are we? For example, if we agree with the statement, “A dog will NEVER be able to learn physics”, we are only posting our opinion on it, about which we are 99.95 % certain (say), but not 100% certain. In fact, I don’t think it will ever be possible for us to be absolutely 100% certain about the occurrence of a particular event, because the Theory of Everything, as it is (or rather, would be) called, which, if stated, would take care of ALL the Sciences, has not been formulated yet.

As another ‘physical’ example, we can also never be 100% sure when we say, “The velocity of this body is 43.784 m/s”; we can only be sure to a certain extent, say 99.998%, beyond which it is not possible to ascertain the velocity. And this is not because of experimental errors, or errors in measurement, etc; in fact, this is an inherent property of ANY event that we can never predict or measure it with exactly 100% accuracy. So, words like “exact, “precise”, absolute”, etc lose their significance in the realm of this thought & discussion. In that case, can we postulate a General Principle of Uncertainty, which would say, “It is impossible to determine the occurrence of any event with absolute certainty, unless it is a definition.” ? I use the word ‘definition’ ‘coz if we define an event, it has got to be 100% certain. For example, when we say, “A meter has 100 centimeters”, we are exactly 100% certain about its validity, as a meter is defined that way. But we are not 100% sure about the validity of the statement, “He has walked 100 meters today.”

Hope you understand what I mean? Any comment(s), criticism & correction (in case I’m wrong somewhere) are welcome.

2007-02-17 20:10:16 · 3 answers · asked by Kristada 2 in Physics

TEA buffer, SDS, TMED, IPTG. I want to know how they work rather than just use them because a procedure told me to

2007-02-17 20:08:24 · 2 answers · asked by jonatan 2 in Chemistry

Can anyone here define time?

2007-02-17 20:07:08 · 4 answers · asked by mafahiim 6 in Mathematics

2007-02-17 20:04:35 · 6 answers · asked by Anonymous in Geography

Survey about antibiotics. Please answer the questions.?
1. Have you ever taken any antibiotics in the past year? Why were antibiotics prescribed for you? Did you know that you had a bacterial infection?

2. Did you take the medication at the dosages and intervals prescribed and take it for the entire recomended course of treatment? If not, why not?

3. Do you know why it is important to finish all prescriptions, even if your symptoms have cleared up?

4. Do you think antibiotics are overprescribed by doctors? Explain.

2007-02-17 20:04:18 · 12 answers · asked by ~ Elizabeth ~ 1 in Medicine

1) How do you calculate the molar mass of aluminum sulfate and ammonium sulfate?

2) What number is equivalent to molar volume at STP?

2007-02-17 20:03:00 · 3 answers · asked by georgie0515 1 in Chemistry

1. Have you ever taken any antibiotics in the past year? Why were antibiotics prescribed for you? Did you know that you had a bacterial infection?

2. Did you take the medication at the dosages and intervals prescribed and take it for the entire recomended course of treatment? If not, why not?

3. Do you know why it is important to finish all prescriptions, even if your symptoms have cleared up?

4. Do you think antibiotics are overprescribed by doctors? Explain.

2007-02-17 20:02:31 · 7 answers · asked by ~ Elizabeth ~ 1 in Medicine

2007-02-17 20:02:00 · 2 answers · asked by juken 1 in Medicine

* Evolution is a theory not a fact.
* creation is a logic fact.
* Evolution means developement & adaption.
* Evelution doesn't mean changing from one species to another.
* Every species got its unique cromosome number & DNA.
* If someone lose a hand or leg, the other hand will adapt to more skill to satisfy the needs of that person, which with a normal person , those skill are not found.
If a person is poor & without shoes, his heet's bottom will become thick & hard to resist the walking on the rough grounds.
If a person lose his vision or hearing, he will become more skillful in detecting the sound direction & reading the movement of lips & bodies. THIS IS WHAT THE ACUAL MEANING OF EVOLUTION WORD.
* Millions of live species have never changed, every one is engineered to its task ,eating, hunting & protecting itself.

* If u believe your origin is monkey, then do a DNA test, if it matches the monkey's then u r an animal, not a human .BUT IF NOT , THROW AWAY FROM UR MIND.

2007-02-17 19:58:51 · 14 answers · asked by Anonymous in Other - Science

* Evolution is a theory not a fact.
* creation is a logic fact.
* Evolution means developement & adaption.
* Evelution doesn't mean changing from one species to another.
* Every species got its unique cromosome number & DNA.
* If someone lose a hand or leg, the other hand will adapt to more skill to satisfy the needs of that person, which with a normal person , those skill are not found.
If a person is poor & without shoes, his heet's bottom will become thick & hard to resist the walking on the rough grounds.
If a person lose his vision or hearing, he will become more skillful in detecting the sound direction & reading the movement of lips & bodies. THIS IS WHAT THE ACUAL MEANING OF EVOLUTION WORD.
* Millions of live species have never changed, every one is engineered to its task ,eating, hunting & protecting itself.

* If u believe your origin is monkey, then do a DNA test, if it matches the monkey's then u r an animal, not a human .BUT IF NOT , THROW AWAY FROM UR MIND.

2007-02-17 19:58:04 · 12 answers · asked by Anonymous in Biology

2007-02-17 19:55:02 · 19 answers · asked by Anonymous in Geography

2007-02-17 19:53:57 · 14 answers · asked by Anonymous in Geography

2007-02-17 19:53:16 · 2 answers · asked by Anonymous in Engineering

2007-02-17 19:51:27 · 6 answers · asked by tuxedo cat 6 in Earth Sciences & Geology

http://video.google.com/videoplay?docid=-369888258105653405&q=%22First+man+In+Space+-+Skydiving+from+the+edge+of+the+world%22+playable%3Atrue

2007-02-17 19:50:54 · 2 answers · asked by ? 3 in Astronomy & Space

or you may tell me how to compute for density of mixture of corn and water

2007-02-17 19:50:25 · 2 answers · asked by kapmakunat 2 in Chemistry

2007-02-17 19:49:17 · 4 answers · asked by Anonymous in Engineering

the thingey people wrote said that genetic engineering (splicing and switching/adding genes) was not allowed to be organic and cloning is NOT genetic engineering. cloning is another form of asexual reproduction. i dont know why the USDA doesn't approve of it. what's wrong with cloning? you can snip off a twig from a house plant, put it in water for a few days, and roots will form. you plant it on the ground and it grows up to be a genetically identical plant to wich it was dervived from. that is also cloning , which is NOT genetic engineering. what's so "unsafe" about cloned food? you could chop up a starfish and throw it back in the water and each piece will grow back into a whole starfish, not like it will have a disadvantage because it's cloned. so it's like saying, what's wrong with identical twins?

2007-02-17 19:46:47 · 5 answers · asked by ♪寿司人♫ 3 in Biology

What is ordinary and partial differential equations?

What are the difference between them?

How do you solve them?

Do both oridinary and partial difference equations have first and second order?

How are ordinary or partial differential equations used in real life?

Please try to explain clearly with examples and anything related to help understanding the concepts easier.

2007-02-17 19:44:47 · 5 answers · asked by Anonymous in Mathematics