Science & Mathematics - 10 December 2006

I asked whether mixing yellow and red light would form orange, and I got a variety of answers. One person said that there is nothing special about primary colours, and that they were only chosen because they're close to what the cones on our retnas pick up. If that's the case, it must be possible to form 'primary' colours from other colours.

For example, what could you add together to make red? I haven't found any way of doing this.

2006-12-10 10:59:40 · 4 answers · asked by Anonymous in Physics

when they cross islands in the caribbean???

2006-12-10 10:58:08 · 5 answers · asked by Anonymous in Weather

solve for x: 3.3 - x =3(x - 1.7)

2006-12-10 10:56:39 · 10 answers · asked by urzalwayz5646 4 in Mathematics

2006-12-10 10:55:30 · 6 answers · asked by Anonymous in Biology

DMT is a plant derived chemical that is also manufactured by the human brain. (when consumed a very powerful psychedelic). It is said to be found in the pineal gland (in the center of our brains). When under the influence, Nearly all volunteers reported convincing encounters with intelligent nonhuman presences. Do you believe this could have been an resonable explanation for reported alien abductions?

2006-12-10 10:53:57 · 9 answers · asked by Third EyE 2 in Astronomy & Space

2006-12-10 10:52:15 · 16 answers · asked by Lana817 3 in Earth Sciences & Geology

2006-12-10 10:51:38 · 5 answers · asked by Anonymous in Biology

the problem is: t squared+3t=40: directions: solve each equation by completeing the square. Round to the nearest tenth.

2006-12-10 10:51:38 · 5 answers · asked by zoiy 2 in Mathematics

Let sin(x) = -(3/5) with (x) in Quadrant III and find

1. cos 2(x)

help! i don't know how to set this up and solve... if someone can show me using double-angle formulas... i will be able to find out how to do the other problems..... THANKS

2006-12-10 10:49:18 · 2 answers · asked by lx88xl 1 in Mathematics

i need help with my fst homework!

if sin(theta)=-.65 and pi is greater than or equal to theta, and theta is less then 3pi/2 evaluate the sin(pi-theta) sin(-theta) sin(pi/2(theta) and tan(pi+theta)

and how many inches are in a degree? I DONT UNDERSTAND, PLEASE HELP!

thank bunches!

2006-12-10 10:48:12 · 2 answers · asked by soccerboarder90 1 in Mathematics

I think these need to be balanced the Redox way....
If you can, show the steps how u done this...but if not its cool
1) Mn O2 + H2 SO4 + H2 C2O4
2) SbCl5 + 2KI >>>> SbCl3 + 2KCl + I2 << done, but is it right?
3) S + HNO3 >>>> SO2 + NO +H2O
4) HNO2 + HI >>>> NO + I2 + H2O

2006-12-10 10:48:12 · 1 answers · asked by truckin_90 2 in Chemistry

atomic # of 15, mass # of 31 and charge of -3. How many neutrons, electrons and protons does it have?

Is it 31, 15, -3 of P? in isotopic form?

2006-12-10 10:47:28 · 1 answers · asked by Anonymous in Chemistry

how do you calculate it given the maximum height, range, or anything? basically how do calculate it for a projectile launched at an angle? and what is it exactly?

2006-12-10 10:46:09 · 3 answers · asked by starbucksluvrxoxo 3 in Physics

the cause of ice ages except the Milankovitch theory?

2006-12-10 10:45:02 · 2 answers · asked by roxychyk 1 in Astronomy & Space

2006-12-10 10:43:47 · 4 answers · asked by shorty6541 1 in Mathematics

2006-12-10 10:43:21 · 2 answers · asked by robby_miami05 1 in Mathematics

I think that the Earth has a natural cycle, it's just we are doing things to rush this.

2006-12-10 10:42:41 · 3 answers · asked by pyt_tlc 3 in Weather

Assume that a can of soda was held at a steady temperature (say 4°C) in a fridge for a long time. Then it is placed on a desk in a classroom. Describe the temperature evolution in the can. In your model, what is the temperature in the center of the can after 10 seconds, 1 minute. 5 minutes, 10 minutes, and 30 minutes, after it was taken out of the fridge? (Find the numerical values of the temperature, not just a formula!) Discuss, whether the answer obtained (and model used) is reasonable or not. Furthermore, you may want to discuss the influence of parameters of the problem (size of the can, classroom temperature, different outer shell materials, pressure in the can, drinking from the can, etc.) on the process.

2006-12-10 10:41:42 · 1 answers · asked by Pushpendra C 1 in Physics

...that is, in the normal healthy adult?

2006-12-10 10:40:14 · 5 answers · asked by summation 2 in Medicine

What is the boiling point of milk

2006-12-10 10:39:19 · 4 answers · asked by Fritz J 3 in Chemistry

i really dont remember how to do this problem..........

the tickets for a dance recital cost $5.00 for adults and $2.00 for children. if the total number of tickets sold was 295 and the total amout collected was $1220, how many adult tickets were sold?(only an algebraic solution can receive full credit.)................please help meee!!!!!

2006-12-10 10:38:40 · 6 answers · asked by urzalwayz5646 4 in Mathematics

CH3CH2CH(CH3)NHCH2CH3

2006-12-10 10:38:13 · 1 answers · asked by ahmad e 2 in Chemistry

Science project

2006-12-10 10:37:05 · 6 answers · asked by Anonymous in Chemistry

The eqation is -10 = 4 - 7x/4

I would really apreciate if you could explain this problem to me.

Thank you-

-CBA

2006-12-10 10:36:46 · 5 answers · asked by Contradicted_by_All 1 in Mathematics

2/3 1/2 7/12 5/6

2006-12-10 10:36:01 · 7 answers · asked by chelsea 1 in Mathematics

It's not because the gender is decided later in pregnancy, as that is determined right from the moment of conception.
Does anyone have any good ideas? Or is this just a mystery.....

2006-12-10 10:35:43 · 15 answers · asked by monssterr 2 in Biology

2006-12-10 10:35:35 · 6 answers · asked by Tink360 2 in Earth Sciences & Geology

2006-12-10 10:35:05 · 4 answers · asked by Dobe777 2 in Zoology

2006-12-10 10:35:01 · 2 answers · asked by Tink360 2 in Earth Sciences & Geology

What is hair? What is it made of? How is it made? What does it do for us? Why do some animals not have hair?

2006-12-10 10:33:21 · 6 answers · asked by heather 2 in Biology