Science & Mathematics - 8 October 2007

A) (1-sinΘ) / (cosΘ) = (cosΘ) / (1+sinΘ)

B) (1-2sin²Θ) / (cosΘ+sinΘ) = (cosΘ - sinΘ)

2007-10-08 05:30:36 · 7 answers · asked by Anonymous in Mathematics

Needles don't bother me so I don't know why I'm so scared. I think it's just because I've been getting poked a lot lately due to multiple blood tests, etc. and I'm sick of it. It's for my leg (tib-fib area). What will this test include? Where will the injection be? Is the needle enormous or small? Thanks for any help you can provide.

2007-10-08 05:30:16 · 3 answers · asked by Anonymous in Medicine

If 500 grams of water at 25 degrees Celsius loses 10500 joules of heat, what will be the final temperature of the water?

2007-10-08 05:30:04 · 2 answers · asked by Lannymac 2 in Chemistry

I need the 4-fact family for each of these equations in base six.

2+3=5

and

11-5=2

Remember these are in base six not base 10. Can anyone help?

2007-10-08 05:26:08 · 1 answers · asked by moira77 4 in Mathematics

2007-10-08 05:25:49 · 6 answers · asked by rainwater 3 in Mathematics

To find the mass percent of dolomite [CaMg(CO3)2] in a soil sample, a geochemist titrates 11.30 g of soil with 35.90 mL of 0.2516 M HCl. What is the mass percent of dolomite in the soil?
Show work!!!!!

2007-10-08 05:21:12 · 2 answers · asked by bumblebee 4 in Chemistry

A mixture of KClO3 and KCl with a mass of 0.915 g was heated to produce O2. After heating, the mass of residue was 0.614 g. Assuming all the KClO3 decomposed to KCl and O2, calculate the mass percent of KClO3 in the original mixture.
Show Work!!!

2007-10-08 05:20:10 · 2 answers · asked by bumblebee 4 in Chemistry

The properties of lava plateaus and how they are formed?

2007-10-08 05:18:03 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-08 05:17:03 · 5 answers · asked by haleser3 3 in Zoology

sorry did not give all the information. these are the measurements

39 1/3 x 75 1/2 x 50 1/6 x 120

2007-10-08 05:16:50 · 3 answers · asked by Kristie W 1 in Mathematics

Find the fourth root of 10 to 100 places.





How do i find this?? Thanks for the help!!

2007-10-08 05:16:31 · 4 answers · asked by PaNaSoNiCeDgE 1 in Mathematics

...or any other precious stone for that matter? Aren't gemstones made primarily of the same minerals? So is it the hardness or trace elements (or a combination of the two) that distinguishes one stone from another?

2007-10-08 05:10:09 · 3 answers · asked by HMFan 7 in Earth Sciences & Geology

3/x+4=5/x x=?

2007-10-08 05:06:57 · 14 answers · asked by Anonymous in Mathematics

Since Titanic there has been so much talk about blue diamonds that I thought I would ask. :)

2007-10-08 05:06:46 · 10 answers · asked by amrefr 2 in Earth Sciences & Geology

2007-10-08 05:00:34 · 2 answers · asked by sam h 1 in Mathematics

I need help im doing a research paper.. please help me!

2007-10-08 04:56:08 · 6 answers · asked by Anonymous in Astronomy & Space

The average distance between the earth and the moon is 382,000,000 meters (radis) this is the only info that the problem has given me

2007-10-08 04:54:58 · 4 answers · asked by ckenyon 1 in Astronomy & Space

Does the mass of an object change if it's speed also changes? EXPLAIN????

2007-10-08 04:54:34 · 4 answers · asked by Anonymous in Physics

2007-10-08 04:52:12 · 6 answers · asked by Anonymous in Mathematics

2007-10-08 04:51:52 · 2 answers · asked by PETER Kin 1 in Engineering

2007-10-08 04:51:17 · 6 answers · asked by Anonymous in Engineering

let's say we drop a ball from a height of 1meter. Now, if we suppose that the force between the earth and the ball before dropping=9.8Newtons.According to the law of gravitation, the less the distance between 2 objects , the more the gravitational force between them. So after dropping the ball, the distance gradually decreases.So, wouldn't the force also increase?EXPLAIN????

2007-10-08 04:49:19 · 2 answers · asked by Anonymous in Physics

Consider: 1) sqrt2^sqrt2
2) (sqrt2^sqrt2)^sqrt2

2007-10-08 04:45:10 · 5 answers · asked by Luthien 4 in Mathematics

2007-10-08 04:41:24 · 3 answers · asked by Anonymous in Physics

I went to the market to buy a dinner steak. There was only one of the type I like left so I looked it over since it was the last one. It looked fine but the price was $6.66.
I said, oh well, that is nothing. I took it up to the register and pointed out to the cashier," hey look, The sign of the beast"
She made a suirmy face and asked if I wanted it still.
I said yes and took a ten dollar bill out of my wallet. It was the only money I had at all in there and written on the front of the bill was a large pentagram and words,"SEE YOU IN HELL"
Now that was strange, but since it was the only steak to choose from and the only bill to choose from, that sort of makes it more weird, but yes, I ate it and it was a few years ago now and I am still here.

2007-10-08 04:30:32 · 8 answers · asked by Anonymous in Other - Alternative

I was wondering how can you explain why the atmospheric layer containing ozone is much warmer than the levels above and below it?
Thanks for any answers. ^^

2007-10-08 04:25:27 · 2 answers · asked by Anonymous in Weather

please explain.......

2007-10-08 04:23:46 · 4 answers · asked by mizuki 2 in Mathematics

well actually i just wanted to know how asteriods, meteors and comets are formed?

well i have another question which has nothing to do with the above question

i am having 15 days holidays and i was wondering whether i could utilize this time to do something in astronomy. i am 13 and i live in a small town. is there anything which i can do in astronomy which will help me latter? plus can i write articles or something like that?

please answer atleast one of the above mentioned questions.

thank you for reading.

love you all!!!

2007-10-08 04:22:30 · 4 answers · asked by SIMONE 5 in Astronomy & Space

Which of the following is true of he ionization energy of the elements?




a. ionization energy generally decreases as we move left to right and decreases as we move top to bottom in the periodic table

b. ionization energy generally decreases as we move left to right and increases as we move top to bottom in the periodic table

c. ionization energy generally increases as we move left to right and decreases as we move top to bottom in the periodic table

d. ionization energy generally increases as we move left to right and increases as we move top to bottom in the periodic table

2007-10-08 04:18:06 · 2 answers · asked by ee101202 1 in Chemistry

What’s the most probable reason why most of the planets orbiting other sun-like stars seen so far are Jupiter-like “gas giants” rather than Earth-like “terrestrial” planets

2007-10-08 04:14:37 · 9 answers · asked by maxpowerrys 1 in Astronomy & Space