Other - Science - January 2007

My son made a joke about this last night as he said I was being noisy. I told him to turn the TV volume up, he said that it used more electricity.......does it or not I wonder.

2007-01-28 21:36:07 · 10 answers · asked by Andrea 2

A researcher wanted to investigate the effects on aggressive behaviour of observing violence on television. The researcher was specifically interested in the effects on young children who watched violent scenes in cartoons during after-school viewing hours.

Identify the independent variable(s) and dependent variable.

Just interested to see what you think...

2007-01-28 20:39:43 · 3 answers · asked by Anonymous

God has to be a male from the little fatherly stuff I know.

2007-01-28 18:46:06 · 11 answers · asked by Siva 1

2007-01-28 18:30:50 · 2 answers · asked by welj 1

2007-01-28 18:16:43 · 7 answers · asked by pb 1

Please explain it as easy as you can and please try using the terms "adhesion" and "gravity".

Need this as soon as possible. Before tomorrow.

2007-01-28 18:05:56 · 2 answers · asked by Anonymous

How long do you have to stand it upright before turning it on ? Dont guess if you don't know cos I dont want to wreck the fridge. Thanks.

2007-01-28 17:58:54 · 12 answers · asked by Anonymous

In other words, is outside air brought into the air conditioner, cooled, and then blown into your house, or is it air that's already in the house, and cooled from that?

I ask because, if it is the second option, it wouldn't seem that you could get any fresh air that way.

Thank you in advance for your help.

2007-01-28 15:58:29 · 9 answers · asked by Anonymous

If so, what? How can you account for it?

2007-01-28 15:21:31 · 5 answers · asked by RhondaJo 2

Also was Was Watson right when he characterized Sherlock Holmes' inferences as "deductions".

2007-01-28 15:03:02 · 2 answers · asked by Anonymous

- Way of life, type of reproduction, habitat, nutrition
- the animal's name in binomial nomenclature
- the animal's Linnaean classification
- common examples of this type of animal

2007-01-28 15:01:52 · 6 answers · asked by tknc 2

2007-01-28 12:41:06 · 8 answers · asked by Kat B 1

help me put this method in past tense plez...thanks for your help and sharing your knowlege..in advance..this mean alot to me.

Method:
-A few green leaves were cut into small pieces and placed in the motar.

-The pieces of green leaves were ground with purified sand in 3cm^3 of Ethanol,until a green extract was obtained.

-A spot of extract was placed 2cm from the end of the chromatography paper.More spots were added at the same point and allowed to dry.

-The paper having the green extract was then attached to a glass cover an suspended in the beaker containing the ethanol.

-The green spot was positioned above the surface of the ethanol and the bottom edge of the paper just below the surface.

-The solvent was allowed to move up the paper.After this,the chromatography was removed from the beaker and allowed to dry.

2007-01-28 12:26:18 · 2 answers · asked by Anonymous

A couple of months ago I recieved lots of answers telling me that its impossible to be at the 'end of a rainbow'. I accepted all answers withgood grace. However, I recieved an e-mail from someone who, with her mother on holiday in Turkey, had the same experience as me and for the last ten years had not been believed and was relieved when she saw my question. Are you sure we didn't see what we say we saw?

2007-01-28 10:22:54 · 8 answers · asked by ineedtoknow 1

2007-01-28 06:18:34 · 11 answers · asked by justin f 1

I'm trying to get a ready for a statistics final. Please answer this question as thoroughly as possible so I can get an idea of what to do.

A physician's health study of the effectiveness of aspirin in the reduction of heart attacks over 5 years found the following: Of 11,037 male medical doctors in the United States who took one 325 mg buffered aspirin tablet every other day, 104 suffered heart attacks. Of 11,034 male medical doctors in the United States who took a placebo 189 had heart attacks. Is there evidence that the proportion having heart attacks is significantly lower for the male medical doctors in the United States who received the buffered aspirin every other day vs. those who received a placebo? Does this lead you to believe that taking one aspirin is effective in reducing the incidence of heart attacks? Explain.

2007-01-28 04:49:47 · 4 answers · asked by Colique 2

Anyone who saw this movie can think of magic being a real amazing thing. All congrats to Edison, and specially Tesla for their contribution in the creation for Energy, Power, and even magic?
My question to this, from one scene in the movie "The Prestige", Tesla, put one hand on the magicians arms, and gave a him a light bulb to hold in the other hand.. weird enough, the light turned on, and Tesla stated, " That the body can give enough energy to turn on the lamp" Is this true? If many people hold up one another, can there be enough Current to make a lamp turn on?>

2007-01-28 04:47:08 · 3 answers · asked by Shawn Miller 1

2007-01-28 04:07:35 · 5 answers · asked by snitta 1

Estimate the asymptotic efficiency of a rocket (or other launch vehicle - Saturn V, Delta, Ariane, Space Shuttle, whatever). A rough estimate would be ok.

As in: what proportion of the total chemical energy in the fuel at launch is ultimately converted into gravitational potential energy + kinetic energy of the launch vehicle/payload?
(To get that PE I expect you integrate Newton's Law of Gravitation, from ground to final altitude, using only the mass of the payload. To get the KE you need to know the final velocity components - is that radial and tangential to the earth orbit?)

For a bonus, what was the single biggest cause of inefficiency, and can you quantify it? (I think it is lifting your own fuel, followed by air resistance)

(I don't just mean the engine efficiency of the engine, I mean the whole deal.)

(Not sure where to put it - this question is a little chemistry, a little physics and a little astronomy)

2007-01-28 03:56:50 · 1 answers · asked by smci 7

2007-01-28 02:50:23 · 4 answers · asked by emi 3

These books argue that mathematics and science are meaningless because at the very heart of them are paradoxes and self-contradfictions which undermine them but which they just ignore

http://gamahucherpress.yellowgum.com/gamahucher_press_catalogue.htm

2007-01-28 01:41:26 · 7 answers · asked by ann 1

Not of a chemical but more like a pulse.

2007-01-28 01:39:46 · 6 answers · asked by done 3

2007-01-27 23:40:29 · 2 answers · asked by Anonymous

*I think it's 2032 but I dont know the mathematical way of finding it out.

2007-01-27 22:21:16 · 10 answers · asked by al 3

2007-01-27 21:45:03 · 6 answers · asked by Anonymous

I know nothing about science ........ dropped it asap at school, and since Tomorrow's World stopped being aired on BBC1 a few decades ago I just have to blindly trust that things just happen! PS Useful background info - I have no extractor fan, and often cut myself shaving due to a steamed up mirror!

2007-01-27 20:35:46 · 8 answers · asked by Zorro 1

I know nothing about science ........ dropped it asap at school, and since Tomorrow's World stopped being aired on BBC1 a few decades ago I just have to blindly trust that things just happen! PS Useful background info - I have no extractor fan, and often cut myslelf shaving due to a steamed up mirror!

2007-01-27 20:35:20 · 8 answers · asked by Zorro 1

2007-01-27 20:03:23 · 17 answers · asked by Anonymous

2007-01-27 17:47:20 · 5 answers · asked by ♪ ♫ ☮ NYbron ☮ ♪ ♫ 6

One day I noticed that a piece of glass in my house did not cast a visible (to me) shadow, but my glasses did. I was wondering why.

2007-01-27 16:40:40 · 4 answers · asked by woaikonglong 3