Science & Mathematics - 28 January 2007

... and explain how you did it?

Two cars are leaving from the same point and are travelling in opposite directions. One is giong 10 km per hour faster than the other is. After travelling two hours, they are 160 km apart. How fast is each car travelling?

2007-01-28 22:54:22 · 11 answers · asked by Anonymous in Mathematics

2007-01-28 22:53:35 · 9 answers · asked by #15mwu 5 in Earth Sciences & Geology

Split-half?
give a brief definition and use of it

2007-01-28 22:52:39 · 1 answers · asked by nasiaq 2 in Mathematics

Cronbach Alpha? please give a brief definition and use of it.

2007-01-28 22:51:54 · 2 answers · asked by nasiaq 2 in Mathematics

2007-01-28 22:48:38 · 31 answers · asked by Anonymous in Zoology

Dear / Respected Electronic friends, I'm not electronician but have towards it. Every time I bring a new unknown transistor without using datasheet of it how can I identify its emitter or collector? Please help me!

2007-01-28 22:45:55 · 3 answers · asked by Vertiiical Axiiis 2 in Physics

2007-01-28 22:45:46 · 3 answers · asked by Anonymous in Chemistry

In today's astrophysics, many people are trying to contact ETs. But haven't anyone thought of its consequence. There is every possiblity that they can bring harm to us rather than harmony. Is'nt that how we look after animals? So why should we try to contact Aliens!?

2007-01-28 22:43:03 · 22 answers · asked by Anonymous in Astronomy & Space

I will like to know what production Engineering is all about. Thanks

2007-01-28 22:41:37 · 1 answers · asked by excite33 1 in Engineering

Hi. Is it true that an object with higher Kinetic Energy would have higher temperature as compared to that which has lower Kinetic Energy? Thank you.

2007-01-28 22:40:17 · 2 answers · asked by schenker 1 in Physics

just wondering....

2007-01-28 22:39:33 · 20 answers · asked by namesake 3 in Other - Science

Find the exact solutions of:
(2)^(1/2)cos(x+(pie/4))-1=0 For x between (0,4pie)

By the way the answers have to be in terms of pie for example one example is (3pie/2)

2007-01-28 22:37:10 · 7 answers · asked by cheesey thug 1 in Mathematics

could say what is bend theory and name sites that could explain the theory to me

2007-01-28 22:29:59 · 3 answers · asked by 1145 2 in Mathematics

Have completed experiment and collected results but my results dont seem to be very conclusive.
Anyone have any results or advice on what i should be seeing- more precise than just enzyme concentration increases, apple juice produced increases please!

2007-01-28 22:28:34 · 2 answers · asked by Anonymous in Biology

2007-01-28 22:28:06 · 6 answers · asked by Hari Samy 1 in Weather

"In general the further the injury site is from the central nervous system, the longer the incubation period. The shorter the incubation period, the higher the chance of death"

your answer will be of great help to me. thanks

2007-01-28 22:24:36 · 3 answers · asked by the chosen one 1 in Medicine

The average score for all students on a test was 80. The average score for thsoe who passed was 84, and the average score for those who failed was 60. If there were 60 students in the class, how many failed? please explain your reasoning so that I can understand :)

2007-01-28 22:23:04 · 8 answers · asked by Anonymous in Mathematics

Give also its name, color, size, surface, temperature(in Celsius)..

2007-01-28 22:22:52 · 5 answers · asked by joseph a 1 in Astronomy & Space

In the decimal expansion of the raional number 3/7, what is the 2006th digit after the decimal point? Please explain your reasoning so I can understand :)

2007-01-28 22:17:31 · 6 answers · asked by Anonymous in Mathematics

can i ask my questions in farsi(persian)?

2007-01-28 22:16:17 · 4 answers · asked by bahareh f 1 in Astronomy & Space

2007-01-28 22:14:44 · 2 answers · asked by alex chong 1 in Earth Sciences & Geology

2007-01-28 22:12:40 · 11 answers · asked by MON 1 in Engineering

i want daily distance that can be used as a refrence

2007-01-28 22:12:38 · 2 answers · asked by bahareh f 1 in Astronomy & Space

if it is different for each yerr i want to attain the number for 2001

2007-01-28 22:05:34 · 6 answers · asked by bahareh f 1 in Astronomy & Space

2007-01-28 21:59:49 · 1 answers · asked by akhil b 1 in Geography

hogganfield loch in glasgow

2007-01-28 21:58:07 · 1 answers · asked by HINDYBOY 1 in Geography

i want to know about the mumbai metro project in detail. what they are doing to make it true in mumbai and what is the technology behind it??

2007-01-28 21:57:59 · 7 answers · asked by Anonymous in Engineering

i want to have daily velocity of the earth around sun for 2001 with concidering that the earth's speed for each day is different

2007-01-28 21:57:56 · 4 answers · asked by bahareh f 1 in Astronomy & Space

I love learning about the human body, i think its so fascinating...i really want to work in medical research, specifically genetic links to disease/cancer research...do you think it would be better to study biomedical science or study medicine, then do a research PhD?
thank u for ur help :)

2007-01-28 21:49:19 · 4 answers · asked by geeky girl 1 in Medicine

Why do researchers use a hypothesis when conducting a study?

2007-01-28 21:44:30 · 5 answers · asked by Anonymous in Other - Science