Science & Mathematics - 23 December 2006

There is a 3-4-5 right triangle with the hypotenuse as the base. The altitude is drawn from the hypotenuse to the right angle. A circle is then drawn with the diameter being the altitude. What is the distance from the point where the vertex of 3 and 5 is to the point where the circle intersects the side of length 3?

2006-12-23 04:37:15 · 2 answers · asked by merviedz trespassers 3 in Mathematics

i want atleast more than 10 points

2006-12-23 04:37:07 · 10 answers · asked by parthi 1 in Biology

The procedure in my lab asks to dilute pottasium iodate solution (0.2 M) in test tubes, by adding specific volumes of water to the solution (in every test tube place one drop of water more than the previous tube). Then we pour into the test tubes 10ml of (0.001 M) NaHSO3 and wait for a dark bluish colour to appear. My question is, why is it important to add specific volumes of water when diluting pottasium iodate? The purpose of the lab is to figure out the order of reaction of the iodate ions in this experiment.

2006-12-23 04:37:04 · 1 answers · asked by S 3 in Chemistry

What is the resolution that your eyes have (assuming 20/20 vision)? Like pixels in a digital picture, except number of photons that our eyes can process.

2006-12-23 04:32:59 · 2 answers · asked by John Doe IV 3 in Other - Science

2006-12-23 04:32:57 · 8 answers · asked by techno 1 in Zoology

2006-12-23 04:30:13 · 4 answers · asked by Anonymous in Physics

2006-12-23 04:28:56 · 35 answers · asked by Gilson Edgar L 1 in Other - Alternative

Where does it come from? Does it harm waste-water treatment plants? How does it work? Did old timey people have it? When was it invented?

2006-12-23 04:28:29 · 3 answers · asked by Anonymous in Chemistry

If square root of negative 1/4 = plus/minus half i. Does that mean that square root four= +-2? whats the difference. I don't think square root 4=+-2 isn't square root 4=2 at least when i press the calculator.
Please explain and hopefully some examples too.

2006-12-23 04:26:58 · 7 answers · asked by Anonymous in Mathematics

2006-12-23 04:19:20 · 19 answers · asked by nigel b 1 in Astronomy & Space

If there is a right triangle ABC with C as the right angle and point D on side AC, can you figure out length DC if you know the lengths of AD, BD, and AB?

2006-12-23 04:17:12 · 3 answers · asked by merviedz trespassers 3 in Mathematics

2006-12-23 04:14:13 · 9 answers · asked by cgmayers 1 in Astronomy & Space

I need this answer to set my pedometer.

2006-12-23 04:14:09 · 22 answers · asked by Gabriele A 1 in Geography

2006-12-23 04:09:34 · 3 answers · asked by paragranjan 1 in Engineering

My teacher told me that square root of negative 1/4 = plus/minus half i. Is this correct? I thought that only when s^2=5 then s=+/- square root 5 but when or nvm.

Please explain and any examples would be appreciated.

2006-12-23 04:09:07 · 11 answers · asked by Anonymous in Mathematics

If you are given the measure of the diameter of a circle and the measure of a chord on that same circle, can you find the measure of the chord's arc?

2006-12-23 04:05:51 · 5 answers · asked by merviedz trespassers 3 in Mathematics

Hi all,
Im a bit hard up this year and as its Xmas and my jack russell is getting on a bit. I thought it might be nice to have him for dinner Christmas day with some Potatoes and perhaps a sandwich Boxing day with any left overs. How long do you think he needs in the oven and is there any sauce you would recommend that would compliment the meal...
Dog lovers need not answer....

2006-12-23 04:02:19 · 28 answers · asked by pop c 2 in Zoology

Can you solve: Area of a triangle=sqrt(s)(s-a)(s-b)(s-c)
where (s=the semiperimeter of a triangle) and (a, b, and c are the measures of the side of a triangle) for c?

2006-12-23 04:02:06 · 5 answers · asked by merviedz trespassers 3 in Mathematics

Just cant remember how to solve these types of chemistry questions. Question asks you to suggest the formula of sodium chlorate(v) - something to do with the (v) but what?

Thank you!

2006-12-23 04:01:37 · 5 answers · asked by Anonymous in Chemistry

2006-12-23 03:53:59 · 49 answers · asked by paulz 3 in Geography

2006-12-23 03:52:48 · 5 answers · asked by Jagjit Singh 1 in Engineering

2006-12-23 03:52:12 · 4 answers · asked by Anonymous in Earth Sciences & Geology

to be one people one global

2006-12-23 03:51:54 · 5 answers · asked by moony s 2 in Earth Sciences & Geology

just the answer to the question - unless there are more than one part of the brain that controls digestion

2006-12-23 03:47:21 · 6 answers · asked by Kathy 1 in Biology

This question popped up in a discussion with a coworker regarding the seasons. As I recall, the angular inclination is approx 13 degrees relative to the Earth’s solar orbital plane, I believe; I’m not certain of this, though. Additionally, I tend to believe that the angle is somewhat constant.

My coworker disagrees, though. He accounts for the seasons by believing the pitch/angle varies throughout the year. But I asked, what phenomenon occurs that is great enough to pitch the Earth up to 13° (or whatever the angle is) in one direction, reverse direction, and then pitch it 13° in the opposite direction? The force required to do this would be tremendous.

I contend that the angle is constant. When the North pole is pitched toward the Sun, the northern hemisphere has its warmer months. At the opposite end of the Earth’s orbit about the sun, the North pole would be pitched away from the Sun, thus the colder months.

Can anyone shine some light on this topic? Thanks for your help.

2006-12-23 03:46:48 · 7 answers · asked by Anonymous in Astronomy & Space

2006-12-23 03:41:05 · 14 answers · asked by Anonymous in Astronomy & Space

2006-12-23 03:40:49 · 10 answers · asked by Darth Vader 6 in Astronomy & Space

A blind man has a drawer with 32 red socks and 48 blue socks in it, all seperate and mixed.

How many socks does he have to remove from the drawer before he is certain to have a matching pair of the same color?

2006-12-23 03:38:52 · 14 answers · asked by Darth Vader 6 in Mathematics

And dont forget that they taste great any time of the year

2006-12-23 03:38:47 · 16 answers · asked by pop c 2 in Zoology

i want something to do with cars or bikes.should not be fancy stuff. i mean it should have a technological outlook and not some rookie's imagination

2006-12-23 03:37:35 · 5 answers · asked by rishikcrazy_4_u 1 in Engineering