Science & Mathematics - 3 December 2006

2006-12-03 16:47:36 · 6 answers · asked by lizzie 2 in Biology

explain briefly adout trransistor

2006-12-03 16:44:31 · 4 answers · asked by krishna s 1 in Engineering

Explain why!

2006-12-03 16:39:03 · 24 answers · asked by Anonymous in Astronomy & Space

I have to summarize an article as part of a grade 11 Bio assignment, and here's a section in my article:

"Within five days of removing 20 percent of an adult zebra fish heart ventricle, undifferentiated progenitor cells begin to line the injured area and turn into cardiac muscle cells, which grow and divide, building new heart muscle"

I need to put this sentence into my own words, in pretty basic terms. So...I'm not exactly sure what this sentence even means...so if someone could explain it to me (since I'm Biology-Impared) then it would be a big help =)

2006-12-03 16:38:06 · 5 answers · asked by Anonymous in Biology

2006-12-03 16:36:34 · 3 answers · asked by thomasgraham880 1 in Mathematics

I have tried time and again to differentiate the following expression, but cannot seem to get it. Help please!

x^(x cos(x))

Thanks!

2006-12-03 16:35:21 · 4 answers · asked by David W 4 in Mathematics

2006-12-03 16:33:43 · 1 answers · asked by qaseh 1 in Biology

or in other words "2p" to the second power plus "p" to the second power. Is it "2p" to the fourth, or "3p" to the second, or even "3p" to the fourth???

2006-12-03 16:30:26 · 6 answers · asked by *•- ninabot -•* 2 in Mathematics

So I want to build a perpetual motion machine but engineering is such a tough feild to do, but do I need engineering to build what I want to build. I fear I might not like a life of complex math and physics. I like cars though, Ive seen mechanics build things from the ground up. so three questions.

1. Is the life of a mechanic less difficult or more difficult than the life of a engineer?

2. Does a mechanic have the skills needed to build a perpetual motion machine? "my guees is probaly not"

3. Do I need engineering to build what I want to build?

2006-12-03 16:27:07 · 3 answers · asked by Anonymous in Engineering

Can you use the b^2-4ac thing to show that an equation like x^7 -2x^4 -x^3 +6x +6 has real roots or something. Please explain why not or why it can be used and when it can be used.
Examples provided can be useful.

2006-12-03 16:26:34 · 5 answers · asked by Anonymous in Mathematics

This is a trigonometric expression. Using trig. Identities and Equations

2006-12-03 16:24:35 · 5 answers · asked by Nathanael W 1 in Mathematics

WHY on an axis?

2006-12-03 16:23:16 · 8 answers · asked by Anonymous in Astronomy & Space

2006-12-03 16:21:58 · 6 answers · asked by Anonymous in Weather

of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 125m. The mass of the motorcycle and driver is 350 kg. Find the magnitude of the normal force that acts on the motorcycle.

What are the equations that one would use to solve this?

2006-12-03 16:21:04 · 5 answers · asked by larkinfan11 3 in Physics

2006-12-03 16:20:07 · 4 answers · asked by kris 1 in Chemistry

However, if this reaction was heated for some time, dinitration products would be produced slowly. What type of methyl dinitrobenzoate would be predicted and explain your reasoning.

2006-12-03 16:16:59 · 3 answers · asked by kelxcore09 1 in Chemistry

2006-12-03 16:16:33 · 11 answers · asked by Anonymous in Astronomy & Space

2006-12-03 16:15:43 · 3 answers · asked by Tapout 4 in Earth Sciences & Geology

Start out with the number of times you go out to eat a week
times that number by 2
add 5
times that number by 50
add 1756
then subtract that number from the year you were born

you end up with a three digit number
the first digit will be the number you started out with (fast food #)
and the two remaining digits will be your age

WHY DOES THIS WORK?!!!?!?

2006-12-03 16:14:58 · 12 answers · asked by Anonymous in Mathematics

2006-12-03 16:14:44 · 8 answers · asked by Anonymous in Astronomy & Space

2006-12-03 16:14:38 · 5 answers · asked by chocolateT 2 in Biology

a.one atom of chlorine
b.two atoms of oxygen
c.three atoms of hydrogen
d.four atoms of calcium

2006-12-03 16:14:32 · 2 answers · asked by cynthia t 1 in Chemistry

We all know that TV's are measured diagonally, right?

2006-12-03 16:13:49 · 6 answers · asked by John L 5 in Mathematics

What horizontal range of a baseball that leaves the bat at an angle of 63 degree with the horizontal with an initial velocity of I60 km/h. Disregard air resistance.

2006-12-03 16:12:39 · 3 answers · asked by Anonymous in Physics

10n squared + 6n

2006-12-03 16:11:56 · 5 answers · asked by Anonymous in Mathematics

Why is it that man is so hooked on speed? as in it would take so long at the speed of light to get from here to there. and by that way of thinking, a ship from any other system could not get to earth in there life time, or us getting to them. speed is some thing that works ( to a point ) on a planet but should not be used for long space travel. you only use a small part of your brain as of yet. but what if you found a way to use all, or mose of it. you would now know how to travel at the speed of thought. as in you are here, you think you are there, and now you are there. no speed came into it at all. people are looking for intelligent life out there, and yes there would be some. but first try to find intelligent life on this earth. good luck with that, there is none. just because you can make words, walk upright, and play with your self; dont make you intelligent.....intelligent people dont make war, dont kill, dont let people starve, and dont steal............look around you........

2006-12-03 16:10:56 · 5 answers · asked by old_cola 1 in Astronomy & Space

a.conduct heat readily
b.changes the color of litmus paper to red
c.reacts with bases toproduce salts
d.becomes negative when combined with other elements

2006-12-03 16:08:49 · 6 answers · asked by cynthia t 1 in Chemistry

2006-12-03 16:08:32 · 6 answers · asked by ramesh kumar y 1 in Biology

What does this number actually represent .. I know we use it a lot in circle area and parameter calculations , but what is it actually ?

2006-12-03 16:08:00 · 9 answers · asked by Luay14 6 in Mathematics

2006-12-03 16:05:04 · 2 answers · asked by Ted 1 in Biology