Science & Mathematics - 24 November 2007

Anybody know what Electric Strength is supposed to show? I am having a Physics test tomorrow and i want an answer quickly.

2007-11-24 23:59:14 · 2 answers · asked by Alastor 2 in Physics

a stone is dropped from a height of 5 meters
how long does it take to reach the ground?
with what velocity does it hit the ground?

2007-11-24 23:52:30 · 8 answers · asked by Josh N 2 in Physics

(the question continue)from the same population with standard deviation 2.5 inch?

plss answer in detail

2007-11-24 23:48:24 · 1 answers · asked by Anonymous in Mathematics

Can someone give me an outline of the molecular mechanisms behind why DNA Acetylation, Methylation, Phosphorylation and general structure (i.e. nucleosomes etc) affect genetic expression/transcription etc? I get how these changes take place, but not how they affect phenotypes. Any accessible webpages would also be a massive help. Thanks everyone!

2007-11-24 23:41:39 · 4 answers · asked by Anonymous in Biology

2007-11-24 23:40:39 · 5 answers · asked by Anonymous in Physics

Can you imagine the cost to build, no matter what route they used? What about the train fare? Man, this futurist planner is really in left field.

2007-11-24 23:20:15 · 11 answers · asked by Anonymous in Astronomy & Space

2007-11-24 23:09:24 · 3 answers · asked by wantitnow98 1 in Weather

2007-11-24 23:01:18 · 14 answers · asked by Anonymous in Mathematics

whate is the secreate behand creation of all this world whate is ouer main jop?

2007-11-24 22:51:41 · 11 answers · asked by hassbarg 1 in Earth Sciences & Geology

The 2 at the end is meant to be one of those little 2's at the top but I cant do that on this keyboard.
Anyway, can someone please tell me what the answer is and how to work it out!
I think I've got it but I wanna make sure! HELP! I'm not good at maths!

2007-11-24 22:45:36 · 12 answers · asked by Anonymous in Mathematics

Can you explain these in easy words:

1. conservation of energy

2. machine (device used to multiply forces or simply to change the direction of forces)

3. efficiency (work output, work input, etc.)

i rly need help :(

2007-11-24 22:43:18 · 3 answers · asked by Anonymous in Physics

like the food they eat?

2007-11-24 22:36:30 · 9 answers · asked by catherine v 1 in Zoology

In terms of how much of the powder milk is made of real cow's milk and how

2007-11-24 22:36:16 · 11 answers · asked by amateurgrower 3 in Agriculture

It would be fun and interesting to know how many people actually read our questions. There has been a suggestion done to ask for a counter on each question. All you need to do to support this suggestion is to vote. Click on the link and click on the thumbs up to vote.

http://suggestions.yahoo.com/detail/?prop=answers&fid=61332

If you want 2 points for answering the question, just type done on this question after you have voted

2007-11-24 22:35:24 · 34 answers · asked by Anonymous in Agriculture

that if you measure the height of a child when they are exactly two and a half years of age, that measurement is exactly half of what their adult height will be? Cool

2007-11-24 22:29:55 · 6 answers · asked by Anonymous in Physics

What is the proper term?

2007-11-24 22:23:22 · 12 answers · asked by The Lark Ascending 1 in Astronomy & Space

I can feel the energy surrounding the body as well as the variation of intensity. Is there any credible scientific research or research projects, that verify the body's external energy field, and if so, where, when, and what instrumentation was used. Also is there a correlation with indications/variations
shown by current technology e.g. EEG/MRI etc. devices. Also,What is used to validate the energy meridian theory for which acupuncture is based.?

2007-11-24 22:07:53 · 1 answers · asked by donwolfe1@sbcglobal.net 1 in Medicine

2007-11-24 21:56:35 · 3 answers · asked by Anonymous in Physics

2007-11-24 21:30:46 · 5 answers · asked by Anonymous in Mathematics

f(x) = 6/ax+b
f(1) = -6
f(0)=-2
find the value of x such that the function f(x) is not defined

2007-11-24 21:28:51 · 7 answers · asked by quinie leong 3 in Mathematics

How much do you suppose the average cumulus cloud weighs...550 pounds, 550 tons or 790 pounds ?

2007-11-24 21:25:55 · 2 answers · asked by pax5155 4 in Weather

2007-11-24 21:21:32 · 1 answers · asked by la vérité qui dérange 2 in Astronomy & Space

organic chemistry, preparation of aldehyde

2007-11-24 21:14:43 · 7 answers · asked by prabir c 1 in Chemistry

types of chemical bond in chemistry

2007-11-24 21:09:16 · 9 answers · asked by prabir c 1 in Chemistry

2007-11-24 21:06:57 · 6 answers · asked by Anonymous in Zoology

2007-11-24 21:04:20 · 26 answers · asked by Anonymous in Zoology

please help me to analys this and please give the answer and solution.....
using this formula
q(sub)v = n C(sub)v dT


1. how much heat is released when 4.50g of methane gas is burned in a constant-pressure system? One mol of methane gas combined with 2 moles of oxygen releases 890 kJ of heat.

2. the specific heat of water is 4.18 J/g-k. If 10.0g of water is heated from 25degrees celcius to 50degrees celcius at constant pressure, how much heat is needed? What is the molar heat capacity of water.

2007-11-24 21:01:19 · 1 answers · asked by bench 1 in Chemistry

2007-11-24 21:00:45 · 17 answers · asked by Anonymous in Zoology

2007-11-24 20:59:07 · 2 answers · asked by destroyer_marion 1 in Chemistry

I know a cd player contains a laser and a reciever to detect the reflected light and i was wondering if there was any way of making a simple light sensor from it.

thankyou

2007-11-24 20:57:52 · 2 answers · asked by Libra 1 in Engineering