Science & Mathematics - 11 October 2007

and an explanation would be much appreciated.

2007-10-11 10:31:15 · 1 answers · asked by Fred 1 in Mathematics

2007-10-11 10:31:12 · 1 answers · asked by Random G 3 in Mathematics

anyone?

2007-10-11 10:29:12 · 2 answers · asked by Anonymous in Biology

i need to know about the integration of two different variable.plz solve my problem

2007-10-11 10:25:43 · 2 answers · asked by RAMESH KATA 1 in Mathematics

Does it have to do with the temperature change or the amount of sunlight in the day or both?

2007-10-11 10:25:32 · 2 answers · asked by GeorgiaPeaches 2 in Botany

Im having trouble with the following problem. Can someone please provide an explanation on how to get the following answer?

The equation of the normal line to the curve y = cubed root(x^2 - 1) at the point where x=3 is ?


Thank You.

2007-10-11 10:22:55 · 2 answers · asked by senseless.student 1 in Mathematics

For example... write 420% as a fraction or mixed number.

2007-10-11 10:21:54 · 3 answers · asked by kk24201 2 in Mathematics

2007-10-11 10:20:33 · 4 answers · asked by Diamond shine 2 in Geography

2007-10-11 10:16:17 · 29 answers · asked by Anonymous in Astronomy & Space

2007-10-11 10:16:00 · 17 answers · asked by thomas c 1 in Zoology

A pelican flying in the air over water drops a crab from a height of 30 feet. Th distance the crab is from the water can be represented in the function h(t)= -16t^2+30, where t is time in seconds. To catch the crab as it falls, a gull flies along a path represented by the function g(t)= -8t^2+15. Can the gull catch the crab before it hits the water? If u do answer plz explain. thx

2007-10-11 10:15:54 · 3 answers · asked by Naila S 1 in Mathematics

Look at this video:
http://www.youtube.com/watch?v=aEweeWwA4us

Aren't we the same in thinking sometimes?

2007-10-11 10:15:52 · 4 answers · asked by ? 6 in Zoology

1) A street light is mounted at the top of a 15 ft pole. A man 6 ft tall walks away from the pole with a speed of 5 ft/s along a straight path. How fast is the tip of his shadow moving when he is 40 ft from the pole.
2) Water is leaking out of an inverted conical tank at a rate of 10,000 cm cubed/minute at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 m and the diameter at the top is 4 m. If the water level is rising at a rate of 20 cm/min when the height of the water is 2 m, find the rate at which water is being pumped into a tank.

2007-10-11 10:15:17 · 2 answers · asked by TED 1 in Mathematics

and how

2007-10-11 10:15:08 · 5 answers · asked by alongfortheride 2 in Biology

in-pipe water flow - domestic - 22mm or 15mm copper is the main target, but if i can measure a 2" white waste pipe as well i will.

Don't like cutting pipe - if i could get a non-invasive clamp-on ultrasonic or hydromagnetic thingy doo dah I would

Accuracy and linearity not important - happy to calibrate with bucket and stopwatch. Best if not temperature sensitive.

Thanks!!

2007-10-11 10:14:56 · 6 answers · asked by wild_eep 6 in Engineering

I know this is so dumb but I haven't seen this one guy I have a crush on in years and he is coming up here to see me. Anyway he says he is 6 ft even and I'm 5'10 so i wanted to compare are heights. Anyway how many inches are in 6ft. We are supposed to be getting back together because I guess he is moving up here for me. All I have is inch ruler nothing else and I am trying to convert inches to feet so can you help me please. The question again is how many inches are in 6ft?

2007-10-11 10:14:38 · 4 answers · asked by Snoopy 1 in Mathematics

plllease help. i know how to use the synthetic method but just using long division how do i solve this problem?

(x^3=4x^2-3x-12)/(x-3)

2007-10-11 10:14:09 · 2 answers · asked by Anonymous in Mathematics

need help if some one can explain what is going on with these numbers or give me the equation.please i need help !

go to this link to see the math prob ^^

http://s241.photobucket.com/albums/ff152/Flurpie_galore/?action=view¤t=math.png

2007-10-11 10:13:25 · 1 answers · asked by Anonymous in Mathematics

2007-10-11 10:12:49 · 3 answers · asked by Thursday 1 in Botany

after my dad died a few weeks later i was on a bus and a man boarded and sat oppsite me and it was the splitting image of my dad he never looked around he just stared at me. when he got off the bus i looked to see which way he went and he was no where to be seen.i want to know if this is paranormal

2007-10-11 10:12:00 · 16 answers · asked by samkinssammy 2 in Paranormal Phenomena

Which of the following is true in an uncontrolled fission chain reaction?




a. a heavy nucleus is broken into smaller nuclei

b. more neutrons are produced than are consumed

c. both (a) and (b) are true

d. both (a) and (b) are false

2007-10-11 10:11:57 · 2 answers · asked by Anonymous in Chemistry

Two vectors A and B each have magnatudes of 6.0 m and the angle between their directions is 60 degrees. Find AxB.
I know this is probably easy but I am still not sure.

2007-10-11 10:08:50 · 3 answers · asked by stang16041 1 in Physics

2007-10-11 10:03:40 · 4 answers · asked by Anonymous in Biology

The driver of an empty speeding truck slams on the brakes and skids to a stop in a distance Dm = 254.84 m. The truck's initial velocity is v0 = 50 m/s and its total mass is m = 3137.8 kg. The coefficient of kinetic friction between the tires and the road is uk = 0.5. If the truck were carrying an amount of cargo that doubled its total mass, what would its stopping distance have been? (Assume the road is straight and horizontal).

2007-10-11 10:02:22 · 3 answers · asked by Jerry M 1 in Physics

I have a set of numbers, W_i, where

0
And I know that

sum( 1 / (1+W_i) ) = 1 (summed over all n, sorry but I can't remember LaTeX).


Define P_i with

P_i = W_i/4 .

From the information above, how do I find the boundaries of

sum(1/(1+P_i)) ???

Does it belong somewhere between 2 and 4?

2007-10-11 09:58:37 · 1 answers · asked by Anonymous in Mathematics

2007-10-11 09:57:01 · 8 answers · asked by d a 1 in Mathematics

In simple terms, could someone explain this to me? Thanks! :) I think it has something to do with longer sound waves the further away you are - it takes longer for them to hit your ear, so the lose energy, so they are softer? So when you ring a bell and are 50 feet away the sound is softer?

Thanks!

2007-10-11 09:55:52 · 3 answers · asked by Anonymous in Other - Science

2007-10-11 09:53:38 · 3 answers · asked by Tom K 1 in Mathematics

Does it mean that x is the isolated variable or that y is the isolated variable?

Stupid terms please.

2007-10-11 09:50:26 · 6 answers · asked by twinkle*toes 5 in Mathematics

A sky diver of mass 80.0 kg (including parachute) jumps off a plane and begins her descent.
Throughout this problem use 9.80 m/s^2 for the magnitude of the acceleration due to gravity.

A) At the beginning of her fall, does the sky diver have an acceleration? A: No; the sky diver falls at constant speed. B: Yes and her acceleration is directed upward. Or C: Yes and her acceleration is directed downward.

B) At some point during her free fall, the sky diver reaches her terminal speed. What is the magnitude of the drag force F-drag due to air resistance that acts on the sky diver when she has reached terminal speed?
Express your answer in newtons.

2007-10-11 09:50:15 · 2 answers · asked by Nick S 1 in Physics