Science & Mathematics - 30 December 2006

you have to prove that the Volume of a cylinder is thrice the volume of a cube

2006-12-30 15:53:13 · 6 answers · asked by madhu g 1 in Mathematics

2006-12-30 15:52:12 · 17 answers · asked by My Last Name 1 in Astronomy & Space

how does it change when both s and t are doubled?

2006-12-30 15:48:39 · 3 answers · asked by mlchphillips 1 in Mathematics

The Earth spins at about 1000mph at the equator. Since we have a tendancy to follow a straight line, gravity has to counteract to pull us back down. At what rotation rate would we be thrown off the Earth?

2006-12-30 15:47:15 · 8 answers · asked by Zefram 2 in Physics

After 6 seconds it has fallen 1296 ft. how long will it take to fall 2304 ft?

2006-12-30 15:45:25 · 8 answers · asked by mlchphillips 1 in Mathematics

Suppose that the relationship between R, the area of the pupil (in square millimeters), and x, the brightness of the light source (in lumen), is given by R = (40 + 23.7x^4)/(1 + 3.95x^4). The rate of change dR/dx is called the sensitivity at stimulus level x.

a) show that R decreases from 40 to 6 as x increases without bound
b) find a formula for the sensitivity as a function of x.
c) Using the result of part (b), plot the graph of the sensitivity as a function of x for x ≥ 0.

2006-12-30 15:44:16 · 2 answers · asked by TehEagle 1 in Mathematics

2006-12-30 15:37:29 · 4 answers · asked by rahuljain_asct 1 in Astronomy & Space

I want to know

2006-12-30 15:36:15 · 7 answers · asked by Sonja 2 in Astronomy & Space

If, after t seconds, the radius of one of the waves is 40t cm., find the rate of change, with respect to t, of the area of the circle caused by the wave at
a) t = 1
b) t = 2
c) t = 3

2006-12-30 15:33:07 · 2 answers · asked by DaOne 1 in Mathematics

find dy/dx of y = (8x - 1)(x^2 +4x +7)(x^3 - 5)

2006-12-30 15:29:23 · 2 answers · asked by DaOne 1 in Mathematics

Please tell me some of your thoughts on how Earth might end. I have provided some of my own.
1. A third world war will destroy the Earth probably with a large nuclear explosion.
2. The Earth will continue to become hotter and life will not be able to live.
3. In about 8 billion years the sun will explode causing nuclear radiation to flood the Earth killing life.

If you disagre with any of my ideas please tell me and explain why. Please tell me your ideas about how the Earth might end.

2006-12-30 15:28:03 · 18 answers · asked by ZAP 1 in Astronomy & Space

Gibberellic acid is a plant hormone that affects the growth of plants.
describe acontrolled experiment a student could perform to test the effect of gibberellic acid on the height of pea plants, over a 3-week period. be sure to include:
-all materials and equipment
-the kind of data that will be collected
-the experimental procedure

2006-12-30 15:27:55 · 2 answers · asked by hellokittybluwie 1 in Biology

2006-12-30 15:27:26 · 3 answers · asked by Maria Analiza B 1 in Chemistry

2006-12-30 15:26:58 · 6 answers · asked by Sam V 1 in Mathematics

how many miles around our earth?
how many miles up until our atmosphere turns into space?
how many miles to the center of our earth?
how many miles up is the 747 flying at?

thanks

2006-12-30 15:26:54 · 3 answers · asked by dragon 3 in Earth Sciences & Geology

14.Which were the earliest oxygen-producing life-forms?
A.
dinosaurs

B.
ferns

C.
seaweeds

D.
cyanobacteria

2006-12-30 15:24:20 · 3 answers · asked by Anonymous in Botany

As a spherical balloon is being inflated, its radius r (in cm) after t minutes is given by r = 3t^(1/3) for 0
a) Radius b) the volume V of the balloon c) the surface area S of the balloon

2006-12-30 15:22:16 · 3 answers · asked by daaznone90 2 in Mathematics

2006-12-30 15:21:06 · 17 answers · asked by kirren3 1 in Mathematics

yes, platypus' do have stingers.

2006-12-30 15:20:28 · 8 answers · asked by Ella M 1 in Zoology

2006-12-30 15:19:13 · 12 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-30 15:16:14 · 8 answers · asked by Anonymous in Weather

2006-12-30 15:15:44 · 4 answers · asked by tom r 1 in Chemistry

2006-12-30 15:14:59 · 7 answers · asked by porcha b 1 in Mathematics

2006-12-30 15:14:39 · 9 answers · asked by Anonymous in Zoology

may be can provide a few examples with elaborations",

2006-12-30 15:13:38 · 4 answers · asked by neo 1 in Physics

Explain how a solution can be both dilute and saturated. Thanks.

2006-12-30 15:11:42 · 4 answers · asked by tom r 1 in Chemistry

(continued from above) isolated lithium atom. Why is this so?

2006-12-30 15:08:40 · 3 answers · asked by neo 1 in Physics

Anyone know how the new straytegy for treating hiv, via gene therapy is coming along? Or any novel "star wars" approach to the disease is coming along?

2006-12-30 15:06:22 · 1 answers · asked by Anonymous in Medicine

2006-12-30 15:05:50 · 9 answers · asked by dabunzae 1 in Earth Sciences & Geology

What is the clinical significance of a positive Benedict's test in a fasting urine sample? What other confirmatory tests can be done to confirm this pathological condition?

2006-12-30 15:05:37 · 2 answers · asked by igeeh 1 in Chemistry