Science & Mathematics - 2 February 2007

the three is on the outside of the radican 2x on the inside

2007-02-02 15:21:00 · 2 answers · asked by Anonymous in Mathematics

2007-02-02 15:20:38 · 1 answers · asked by dhiman p 1 in Engineering

2007-02-02 15:18:54 · 5 answers · asked by dogmatitans 2 in Astronomy & Space

2007-02-02 15:16:27 · 8 answers · asked by Rube 2 in Mathematics

2007-02-02 15:14:56 · 7 answers · asked by David A 1 in Biology

solution is pi/2, 7pi/6, 11pi/6.
I know the period is 2pi but when does sin = -1?

2007-02-02 15:13:34 · 3 answers · asked by scipaula 1 in Mathematics

2007-02-02 15:12:06 · 10 answers · asked by Anonymous in Mathematics

2007-02-02 15:10:37 · 4 answers · asked by Anonymous in Physics

2007-02-02 15:07:33 · 16 answers · asked by hey 2 in Astronomy & Space

this is the site i am using http://www.all-science-fair-projects.com/science_fair_projects/89/835/aed978aabe49b8ac1a6197cc407cc6d7.html

2007-02-02 15:06:28 · 6 answers · asked by Seth S 2 in Engineering

Have you ever wondered whats outside our world?
Outside earth its space and stars and planets and black hole but do you ever wonder what outside of that?What if someone can rip the seperation between us and another unknown world?

2007-02-02 15:05:56 · 9 answers · asked by hey 2 in Astronomy & Space

1) The weekly wage, $w, of a salesman consists of a fixed component of $200 then $10 commission for each unit he sells.
a)If he sells n units in a week, find a rule for his weekly wage w, in terms of the number of units sold.
b)Find his wage if he sells 30 units.

c)How many units does he sell if his weekly wage is $550?

2) A parabola has x –intercepts of 2 and 7 and passes through the point (3, 6). Find the equation of the parabola.


3) For each of the following make the symbol indicated in brackets the subject:
a)H=20 – 2T
b) S=P(I+rt) +7



4) Find the equation of the line that passes through the point with coordinates (–2, 6)and is :
a)parallel to the line with equation y =–3x + 4
b)perpendicular to the equation y =–3x + 4



5) Find the x–intercepts of the graphs of:
a)y = -(x - 2)² + 4
b)y = 25 – x²

2007-02-02 15:05:51 · 3 answers · asked by need_need 1 in Mathematics

If the outside of a test tube is not dried after vaporizing the liquid, will the molar mass of the compound be too high or too low?

2007-02-02 15:04:17 · 3 answers · asked by Anonymous in Chemistry

I have had a lot of trouble with math and chemistry, but would like to major in something in the science field related to the environment and/or to animals. I have considered Biology, and Convervation but both have a lot of math and chemistry. Do you have any ideas?

2007-02-02 15:02:31 · 9 answers · asked by Anonymous in Other - Science

2007-02-02 14:59:56 · 9 answers · asked by miraclewhip 3 in Biology

Nepal
Chain
France
Choose correct Answer

2007-02-02 14:59:53 · 9 answers · asked by Hero NO 1 1 in Geography

Please don't say any mean comments. These problems are elementary school problems. Snow is approximately 1/8 as heavy as water. How many inches of snow would it take to weigh as much as 3 1/2 inches of rainfall?
The planet Mercury makes its circuit around the sun in 88 days. Venus takes 225 days to complete its ciruit. Venus's travel time is what percent of Mercury's travel time? Find the answer to the nearest whole percent.

The speed of light is 186,000 miles per second.The sun is 93,000,000 miles from the earth. How many seconds does it take the light of the sun to reach the earth? How many minutes does it take? Write the remainder as a fraction in lowest terms.

Since light travels at 186,000 miles per second, how far does light travel in 1 hour?

Please don't tell me the answer but explain it to me.

2007-02-02 14:57:17 · 2 answers · asked by ღLala Loveღ 4 in Other - Science

The wavelengths of X-rays are much shorter than those of ultraviolet or visible light. Show QUANTITATIVELY why continued exposure to X-rays is more damaging than exposure to sunlight.

2007-02-02 14:56:58 · 3 answers · asked by RickySingh2006 2 in Chemistry

2007-02-02 14:56:11 · 3 answers · asked by awantwin2004 2 in Physics

how does it get all the dirt off my hands?

2007-02-02 14:54:50 · 4 answers · asked by 킹세븐 2 in Chemistry

By "sexually specialized species," I mean: 2 and only 2 sexes, and unlike aphids, all offspring must have a male and female parent.

Think how far back on h.sapiens' evolutionary tree one must trace back before finding a species with multiple modes of reproduction (3 or even more genders, and/or self-fertilizing capability.)

How do all its (many) sexually specialized evolutionary descendants, in h.sapiens' lineage, generate new species, when offspring require 2 parents having complementary sets of chromosomes?

Do two complementarily genetically mutated individuals, a male and a female from EACH of the interval species, have to a) be at the same place and the same time b) successfully mate?

People with chromosomal abnormalities can't have kids, NOT because there aren't individuals with the same chromosomal abnormality--some are common--but because each individual with chromosomal abnormality is rendered infertile. Why then are 1st male/female of each new species fertile?

2007-02-02 14:53:56 · 4 answers · asked by miraclewhip 3 in Biology

2007-02-02 14:53:46 · 7 answers · asked by john m 1 in Engineering

Let h(x) = 4 x2 + 4 x + 5.
Let g(x) = 2√{x} + 3.

what is
* g(x+1)
* h(h(x))
* h(g(x))
* g(h(x))

i keep getting these wrong, help

2007-02-02 14:53:26 · 5 answers · asked by Diggler AKA The Cab Driver 1 in Mathematics

2007-02-02 14:51:33 · 4 answers · asked by CR7 3 in Chemistry

We know that energy can be transformed from one form into another. But is there a boundary to this conversion? What I mean is, if one form of energy gets transformed into some other form, it gets converted fractionally; that is, is it true that the WHOLE of one form of energy does not get converted WHOLLY into another form & gets converted only fractionally? If yes, then what could be the reason for this?
Why I ask this is that our daily life situations suggest that this indeed happens. For example, when we hit a bell, our mechanical energy is converted into sound & heat energy (mostly), and NOT to ONLY ONE of them, although they are converted in varying proportions, as is evident. Several such examples could be found.

If this were indeed true, then is this conversion RATE arbitrary or is it quantized? Mathematical explanation with equations, please....

2007-02-02 14:50:42 · 6 answers · asked by Kristada 2 in Physics

JA Cone description or picture for referenece. use in PC Grout test in Efflux Time..

2007-02-02 14:49:56 · 1 answers · asked by thesya 1 in Mathematics

A friend of mine has been assigned an egg drop project, which is where you drop an egg out of a third story window and have it land without breaking by a)wrapping it up in something or b) making a parachute. The only problem is, his teacher will only let him use 10 sheets of toilet paper and toothpicks for the project (plus glue). Any ideas? thanks!

2007-02-02 14:48:30 · 1 answers · asked by Anonymous in Engineering

2007-02-02 14:48:30 · 14 answers · asked by geralyn p 1 in Mathematics

wings. Work the following crosses though the F2 generation, and determine the genotypic and phenotypic ratios for each generation. Assume that the P1 individuals are homozygous:
(1) gray, long X ebony, vestigial
(2) gray, vestigial X ebony, long
(3) gray, long X gray, vesitigial

2007-02-02 14:46:59 · 2 answers · asked by Anthony 1 in Biology

or a website

2007-02-02 14:45:21 · 1 answers · asked by Michael S 1 in Zoology