Science & Mathematics - 13 September 2007

2. will a listener notice the Doppler effect if he or she and the source of the sound are traveling toward eachother?

can anybody answer any of these questions?

2007-09-13 15:51:16 · 4 answers · asked by rissa 2 in Physics

what are they,and how are they known to be detected as them?

2007-09-13 15:47:28 · 19 answers · asked by Life goes on... 6 in Astronomy & Space

2007-09-13 15:46:56 · 18 answers · asked by Shaddy 1 in Mathematics

2007-09-13 15:45:39 · 3 answers · asked by houstonman20042002 1 in Mathematics

wat fraction could 0.28 be the decimal for? plz explain :( i dont understand

2007-09-13 15:44:34 · 8 answers · asked by kassy 3 in Mathematics

I think it was a planet because there were no stars and it was around 7:32PM on 9/13 near St. Louis. If it was a planet, which one was it? Did anybody else see it? It was about the size of what a star would appear to be.

2007-09-13 15:44:01 · 11 answers · asked by Kyle 3 in Astronomy & Space

2007-09-13 15:42:36 · 20 answers · asked by Micheal R 1 in Mathematics

Not like the actual female symbol, but something of that nature.

2007-09-13 15:40:22 · 5 answers · asked by Anonymous in Zoology

Hi, I really need a good simple definition for silicon. Can you give me one?

2007-09-13 15:38:56 · 4 answers · asked by danielledear 1 in Other - Science

An electric hoist is being used to lift a piece of equipment. The diameter of the drum on the hoist is 8 inches and the equipment must be raised 1 foot. Find the number of degrees through which the drum must rotate.

2007-09-13 15:37:29 · 1 answers · asked by Anonymous in Mathematics

Also what is the importance of ants and termites.

2007-09-13 15:36:14 · 3 answers · asked by JD 2 in Other - Science

resultants, vectors, with just two units, formula

2007-09-13 15:33:45 · 1 answers · asked by Anonymous in Physics

(x^2-5x+5)^x^2-9x+20=1

2007-09-13 15:32:59 · 6 answers · asked by lattekiwi 1 in Mathematics

What does she do? And how do you deal? Serious answers only. Thanks

2007-09-13 15:32:06 · 6 answers · asked by Mrs ACO 3 in Other - Alternative

2007-09-13 15:31:02 · 8 answers · asked by powerpuff mum l 1 in Earth Sciences & Geology

1. During the Winter Olympics at calgary in 1994. Dan Jansen of the United States skated 5.00 x 10^2 m in 35.76 s. Suppose it takes Jansen 4.00 s to increase his speed from zero to his maximum speed, which is 10.0% greater than his average speed during the whole run. Calculate the magnitude of Jansen's average acceleration during the first 4.00s.
2. The winding cages in mine shafts are used to move workers in and out of the mines. These cages move much faster than any commercial elevators. In one South African mine, speeds of up to 65.0 km/h are attained. The mine has a depth of 2072 m. Suppose two cages start their downward journey at the same moment. The first cage quickly attains the maximum speed ( an unrealistic situation) then proceeds to descend uniformly at that speed all the way to the bottom. The second cage starts at rest and then increases its speed with constant acceleration of 4.00 x 10^-2 m/s/s. Which cage will reach the bottom first, and how long will it take?

2007-09-13 15:29:29 · 2 answers · asked by ~SMCM101~NYC 2 in Physics

The running speed is about 10 feet per second.

1) About how many miles will you run in 100 minutes?

2) On Monday and on Tuesday you run at the speed of 25 minutes. On Wednesday you run for 15 minutes. About how many miles have you run in all?

2007-09-13 15:28:46 · 7 answers · asked by Anonymous in Mathematics

2007-09-13 15:28:14 · 2 answers · asked by yeshila 1 in Mathematics

I see people put this in their math equations here all the time yet I still can't figure out what that's supposed to stand for...

My guess maybe its 3 to the 3rd power so instead you would write here: 3^3

Just a guess...

2007-09-13 15:25:44 · 8 answers · asked by Anonymous in Mathematics

2007-09-13 15:25:44 · 1 answers · asked by Anonymous in Mathematics

Where is hurricane humberto right now i just got my electricty?

2007-09-13 15:25:37 · 3 answers · asked by brownsuagr569 2 in Weather

Theres actually 2 .

So #1 -

At a business luncheon, 424 handshakes took place. No two people shook hands with each other more then once. What is hte least number of people in attendance At the luncheon?

#2 -
Find the sum of the whole numbers from 1 to 999.

2007-09-13 15:17:16 · 6 answers · asked by Anonymous in Mathematics

what is a high freq diode, its uses.

2007-09-13 15:17:12 · 2 answers · asked by shadow 1 in Engineering

I mean think about it....

2007-09-13 15:13:31 · 15 answers · asked by ThinkTink 2 in Medicine

what is the interest on $1200 invested for 2 years in an account that earbs simple interest at a rate if 5 % per year and tell me how to do it also

2007-09-13 15:13:08 · 2 answers · asked by ***Lovin*** 3 in Mathematics

basically what does the upsidedownn t mean. I think it has something to do with greater than or less that but i was only guessing.

2007-09-13 15:12:33 · 19 answers · asked by jc7rc4 2 in Mathematics

2007-09-13 15:10:45 · 11 answers · asked by nygirlsrdifferent 1 in Zoology

A. cells
B. molecules
C. atoms
D. carbon

2007-09-13 15:10:31 · 17 answers · asked by Anonymous in Biology

2007-09-13 15:10:10 · 4 answers · asked by athiyav2000 3 in Mathematics

Okay, in a computer class we are learning bianary, and how to convert it and stuff.

The teacher says he wants to see some work but that you can use a calculator.

The problem for those of you who do not know is the whole point of the thing is to get the remainders in division.

So is there anyway to get a remainder using a calculator or to calculate it using the decimals?

I have a TI-83 Plus.

Or do I just have to divide it all by hand?

2007-09-13 15:08:43 · 4 answers · asked by Anonymous in Mathematics