Science & Mathematics - 18 October 2007

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why does water flow straight?

2007-10-18 11:50:40 · 3 answers · asked by flint carter 2 in Earth Sciences & Geology

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Analysis of Functions? Symmetry?

I need to know how to determine whether each equation is symetric with respec to the x-axis the y-axis the line y=x and the line y= -x.
FOR Y= 1/x^2
If you dont know the formulas they are
x-axis= f(x)= -f(x)
y-axis= f(x)= f(-x)
y=x = (x, f(x) ) <-> ( f(x), x)
y=-x = (x, f(x) ) -> (-f(x), -x)

I need step by step directions i have a test tomorrow

2007-10-18 11:48:53 · 2 answers · asked by PTK 5 in Mathematics

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Please help Calc 2 Integration of sin^4xcos^2x dx?

I need to know the integration of sin^4xcos^2x (the x is not in the exponents) its part of the sin and cos

I have

(.5(1-cos2x))^2 * (.5(1+cos2x))
1/8 ( 1-cos^2(2x))(1-cos2x) dx

stuck please help!

Thanks,

Sarah

2007-10-18 11:47:54 · 1 answers · asked by Sarah 2 in Mathematics

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Why would someone take Ditropan/oxybutynin if they have an overactive bladder?

Doesnt this drug relax the smooth muscles ?
Wouldnt that make someone need to void even more?

2007-10-18 11:47:12 · 4 answers · asked by njank99 4 in Medicine

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how do you find the distance between pairs of parallel lines?

i have a problem on my homework that says find the distance between the pair of parallel lines. it gives me y=2x + 2 and y=2x - 3

2007-10-18 11:46:50 · 5 answers · asked by smart_blonde9112 1 in Mathematics

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If a and b are intergers, witch equation is always true?

a) a+2b=b+2a
b)a-b=b-a
c) a/b - b/a
d) a+b=b+a

please explain

thank u

2007-10-18 11:46:47 · 4 answers · asked by Magnun S 3 in Mathematics

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if f(x)=3x-1 and g(x)=4x+3, find and simplify the composition g[f(x)]?

2007-10-18 11:46:37 · 5 answers · asked by Anonymous in Mathematics

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Which two parallels form the boundaries of the tropics, also called the low latitudes?

2007-10-18 11:46:15 · 3 answers · asked by Anonymous in Geography

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dangers of PUBLIC microwaves?

do you think this would be a good thing to do a sci fair experiment on? my school microwave is really unsanitary and overused.
i want to find out if there is bacteria in it.

will i find anything? TIPS FOR THE EXPERIMENT WOULD BE AMAZING!

2007-10-18 11:45:21 · 2 answers · asked by sweeet 2 in Other - Science

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what are the 3 countries situated at south of germany?

2007-10-18 11:41:53 · 4 answers · asked by Europan 3 in Geography

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How can I calcuate how many moles of H2O are present in 1L of distilled water?

Please Help!!!

2007-10-18 11:41:53 · 3 answers · asked by happy2007 1 in Chemistry

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Why is it that the placement of linear dimensions on sketches so important?

2007-10-18 11:41:03 · 2 answers · asked by TTU fan 2 in Engineering

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How do you find limit of ((√(x+2)-3)/(x-7)) as (x→7)⁡?

2007-10-18 11:40:40 · 2 answers · asked by dgotts2008 1 in Mathematics

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how do u seperate iron filings, wood shavings, sand, pebbles ,and salt from one another?

2007-10-18 11:40:16 · 3 answers · asked by Anonymous in Other - Science

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homework hellp!!!science?

0.1 cm deep scratch was made in the surface of a globe with a diameter of 40cm. Calculate the actual depth of the surface feature (represented by the scratch) on the real Earth.

2007-10-18 11:39:59 · 3 answers · asked by Anonymous in Earth Sciences & Geology

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Calc Question- Newtons Method?

Find the smallest positive value of x which satifies
x= 4.800cos(2.000x)

for some reason i cant get it

is it the same as saying F(x)=
and then just geting x1,x2, x3 etc.?

or do i have to do it a different way?

2007-10-18 11:39:41 · 1 answers · asked by Anonymous in Mathematics

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Prove that the real number y=0.(0...01); where there are n zeros before the 1, is 1/(10^(n+1) -1)?

how should i prove it??? should i use mathematical induction??? can someone show me the steps??? thank you so much....

2007-10-18 11:39:09 · 1 answers · asked by xxx 1 in Mathematics

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How many degrees is it form the North Pole to the South Pole?

2007-10-18 11:36:42 · 7 answers · asked by Anonymous in Geography

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Methane...?

What should we do about it? I mean, we can't just kill all of the livestock, can we? Please helpp mee.

2007-10-18 11:35:53 · 9 answers · asked by Holly 1 in Other - Science

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What are the temperatures of the different layer of Earth?

Can you tell me the temperature not in ranges for example: PLEASE DO NOT WRITE THE FOLLOWING: Mantle- 1600 f - 5400 f. I need one temperature for crust, mantle, outer core, and inner core.

2007-10-18 11:35:12 · 1 answers · asked by racecar2daendofdastreet 1 in Earth Sciences & Geology

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What is the density of (z)-stilbene/ cis-stilbene? What is it's molar mass?

Thanks in advance!

2007-10-18 11:34:46 · 2 answers · asked by leopardgirl314 3 in Chemistry

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Math problem help?

If z1=3-2i and z2=5+3i how do you show the sum of z1+z2 graphically.

2007-10-18 11:33:42 · 2 answers · asked by baseballman1243 1 in Mathematics

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does any one know the answer for this equation: (x-a)(x-b) all the way to (x-z)?

some people say it is zero i need a real answer.

2007-10-18 11:32:06 · 6 answers · asked by Anonymous in Mathematics

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15+4(m-2)=21?

its like terms

2007-10-18 11:31:49 · 8 answers · asked by Andres A 1 in Mathematics

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What happens to forces inside an atom when a proton is added? What if a neutron is added?

The questions in details:

What happens to the forces (electromagnetic, nuclear, and repulsive) inside the atom when a proton is added to the nucleaus?

What happens to the forces inside the atom when a neutron is added to the nucleus?

2007-10-18 11:31:36 · 2 answers · asked by Kaneya 1 in Chemistry

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