Science & Mathematics - 29 November 2007

Okay, I was doing pretty well up until these...

1. Center at (3, 3); tangent to the x-axis

2. Center at (0, 0); passes through (2, 10)

3. Endpoints of a diameter are (5, 3) and (8, -3)

Someone PLEASE explain these to me!

2007-11-29 05:16:39 · 5 answers · asked by wrongnumber 1 in Mathematics

A woman living on the equator weighs herself and finds that her apparent mass to be 50 kg. A correction in her mass should be made for the Earth's rotation (centripetal force). What should be her correct mass, assuming that the Earth is a perfect sphere of radius 6.37 x 10^6 meters.

2007-11-29 05:16:16 · 2 answers · asked by labelapark 6 in Physics

Find the upper limit and lower limit for the zeros of the following function.

f(x)=x^3 -3x^2 -2x +15

2007-11-29 05:15:14 · 1 answers · asked by nickj3315 2 in Mathematics

A bicycle starts from rest and travels 1000 feet. Given wheels of diameter 26 inches and no slipping, calculate the final angular position of a spoke on the bicycle wheel that starts at a 30 degree position. Assume counterclockwise rotation.

2007-11-29 05:15:11 · 3 answers · asked by labelapark 6 in Physics

Which of the following Lewis acid-base reactions are not Bronsted acid-base reactions ?

a) Ag +(aq) + 2CN -(aq) = Ag(CN)2 -(aq)
b) HNO3(aq) + NaOH --> NaNO3(aq) + H2O(l)
c) Al(OH)3(s) + OH-(aq) --> Al(OH)4-(aq)
d) BF3(g) + (CH3CH2)2O(l) --> (CH3CH2)2OBF3(l)

2007-11-29 05:14:51 · 2 answers · asked by idonohw5 1 in Chemistry

A frictionless block of mass 2.25 kg is attached to an ideal spring with force constant 290 N/m . At t=0 the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 11.0 m/s.
a) Find the amplitude.
b) Find the phase angle. (In rad)

2007-11-29 05:09:31 · 2 answers · asked by Natiphy2007 1 in Physics

2007-11-29 05:09:00 · 3 answers · asked by brittany a 1 in Physics

Can you help me find the interior angle of 10:10 a.m.?

2007-11-29 05:00:13 · 6 answers · asked by Ted S 2 in Mathematics

This Question is really bugging me:

Let z = cos A + iSinA

Express 2/(1+z) in the form 1 - itan(kA), z not equal to -1.

Can anybody solve this please?

2007-11-29 04:59:41 · 1 answers · asked by alanjb 1 in Mathematics

I plane words, what's the difference between these two kind of telescopes?

2007-11-29 04:58:30 · 5 answers · asked by krumenager 3 in Astronomy & Space

Who would win?

2007-11-29 04:55:31 · 12 answers · asked by Anonymous in Zoology

1) Let n be an interger. Prove that the gcd(n, n+2) =1 or gcd(n, n+2) =2

2) A chemist has five assistants engaged in the research of nine compounds that must be synthesized. In how many ways can the chemist assign the syntheses to the five assistants so that each assistant is working on at least one synthesis.

2007-11-29 04:55:27 · 1 answers · asked by Anonymous in Mathematics

As in ci is the term that goes into the function.

2007-11-29 04:55:21 · 2 answers · asked by Jason 3 in Mathematics

2007-11-29 04:51:23 · 39 answers · asked by Tracy Terry 2 in Astronomy & Space

Determine whether the functions
a) f(x) = 3x - 1
b) f(x) = x^3 - x
are one to one and onto over the integers, the rationals, and the real numbers.

2007-11-29 04:50:10 · 1 answers · asked by MRG skier 1 in Mathematics

X(3), or X to the third power.
Is it one to one function?
According to the mean value theorem, there exist derivate (f(0))= 0. For this reason, there exist value f(a)=f(b).
is it one to one function?

2007-11-29 04:49:12 · 1 answers · asked by ilsup y 1 in Mathematics

The first question is quadratic equations and functions, and the second question is parabolas. Please can someone help me, I've been at these two problems for over an hour and I still cannot figure them out. THANK YOU!!!

2007-11-29 04:47:30 · 6 answers · asked by Anonymous in Mathematics

2007-11-29 04:46:53 · 6 answers · asked by Tracy Terry 2 in Astronomy & Space

I wrote a question about Yellowstone and GW effects and a lot of people said CO2 would be responsible for GW effects in the long term. On (whatever) show I was watching, the narrator specifically said that the dust cloud that formed immediately afterwards could not have been responsible for the unusual cold spell that lasted for a while. I used the abbreviation SO2 which is where a lot of respondants apparently thought I was refering to CO2. But, it does bring up the question why volcanoes supposedly submit so much CO2 if the Krakatoa one caused problems by emitting too much SO2?
(BTW, I am not trying to be rude but it does make me very doubtful about the statement that CO2 from volcanoes is part of GW.)

2007-11-29 04:43:10 · 3 answers · asked by strpenta 7 in Earth Sciences & Geology

Manipulate the following for h

v = (3.14)r^2 h

this is basically what is the formula for height of a cylinder.

2007-11-29 04:41:55 · 5 answers · asked by Anonymous in Mathematics

Our brains can be tricked by the things we see. For example, on a sunny day a mirage of a pool of water may appear on the road.

2007-11-29 04:41:01 · 6 answers · asked by Mak Man 1 in Weather

Can anyone explain how i can find the lengths of 2 Lines.

There is a line with A at one side, M is the middle value, And C is on the other end of the line.

The co-ordinates
A is (1,1),
M is (2,3)
C is (3,5)

I need to find the lengths of the line MC and also MB

2007-11-29 04:40:41 · 6 answers · asked by Anonymous in Mathematics

I saw a picture of this, so I was a little surprised. Is it considered to be a landspout when this happens, or another type of tornado altogether, or something else completely?

2007-11-29 04:38:35 · 3 answers · asked by kenny boy 2 in Weather

How can i in prove my vocabalry and speling quickly?
Give as detail as possible.

2007-11-29 04:36:50 · 4 answers · asked by Zoey H 3 in Mathematics

Take A, B and C and find me the Sum, what is it? Now take that, divide it by 16 and subtract 4, what's the final answer?

2007-11-29 04:33:45 · 3 answers · asked by ton d 2 in Mathematics

2007-11-29 04:30:46 · 14 answers · asked by ஐsummer girlஐ 2 in Earth Sciences & Geology

Question:1
Soil phase diagram of earth planet consists of Air, Water and Solid as per http://www.eng.fsu.edu/~tawfiq/soilmech/lecture.html (Lecture #2)

As there is no air and water on the moon or its surface. This means that phase diagram of moon’s soil will only be solids which can not be pressed.
http://www.lpi.usra.edu/lunar/missions/apollo/apollo_11/photography/

So my question is how print was formed on moon surface. I believe that voids among the dust partials are filled by the vacuum which can’t be pressed further. Moreover why did vacuum not replace those voids which were displaced in printing?

Question:2
Earth revolve around the sun with certain velocity in its orbit. What is the effect of vacuum that left behind the earth in its orbit on earth’s velocity? Technically increase or neutral ? Further how earth enter into the oncoming vacuum in its orbit and where the vacuum go? Displace/ replace ? Explain please?

2007-11-29 04:30:09 · 8 answers · asked by ? 3 in Astronomy & Space

2007-11-29 04:27:55 · 10 answers · asked by elite 3 in Mathematics

Show that it will roll without any sliding when its speed is reduced to 5/7 v-initial. The transition from pure sliding to pure rolling is
gradual so both sliding and rolling take place during this interval.

Any help would be greatly appreciated.

2007-11-29 04:25:49 · 3 answers · asked by Anonymous in Physics

a rectangular table top has an area of 60 sq feet if the length of the table is one foot less than 4 times the width, find its dementions

2007-11-29 04:22:58 · 8 answers · asked by sport 2 in Mathematics