Science & Mathematics - 9 September 2007

I mean its just a bunch of water and air

2007-09-09 17:14:07 · 2 answers · asked by Ireqiredlotofhelp 1 in Weather

I put that there are no zero's and no symmetry, is that correct? I'm a little confused and wanted to double check with you guys.

2007-09-09 17:11:17 · 2 answers · asked by Hotwng 1 in Mathematics

2007-09-09 17:10:26 · 4 answers · asked by Jasper 1 in Earth Sciences & Geology

A person looking out the window of a tall office building observes what he suspects is a UFO. The person records the position of the object as a function of time and finds it is given by *r*(t) = -(5.0 m/s)t*i*+ (10.0 m/s)t*j*+ [(7.0 m/s)t - (3.0 m/s2)t2]*k*

(a) Find the displacement, velocity, and acceleration vectors for the object at t = 2.0 s.
r(2s)= ____i +____ j +_____k
v(2s)=____i +____ j +_____k
a(2s)=____i +____ j +_____k

b) Is there a time when the object has a velocity of zero?


c) Is the acceleration of the object constant, or does it change with time?

2007-09-09 17:09:36 · 1 answers · asked by Walachka 3 in Physics

while no one cares about the grizzlies and brown bears? Is it because the polar bears are white and fluffy and cutesy and fluffy as cubs while people hunt other dark colored bears.

2007-09-09 17:08:21 · 10 answers · asked by Don S 5 in Zoology

2007-09-09 16:58:53 · 3 answers · asked by Anonymous in Mathematics

2007-09-09 16:58:38 · 9 answers · asked by myvoice6969 1 in Mathematics

i'm in college and have very little space for my stuff. can i put a lamp on my microwave?

2007-09-09 16:57:49 · 10 answers · asked by Anonymous in Engineering

Could you please tell me how large Antarctica is in sq km (or sq m). Tanx

2007-09-09 16:54:14 · 14 answers · asked by Anonymous in Geography

Are there telescopes on Earth that are powerful enough to see the descent modules from the Apollo missions that were left behind on the moon?

2007-09-09 16:53:38 · 9 answers · asked by davidmorem 2 in Astronomy & Space

Is Latin the official language astronomers from all around the world?

2007-09-09 16:53:28 · 4 answers · asked by Anonymous in Astronomy & Space

1,5,9,13...... t17

2007-09-09 16:51:09 · 3 answers · asked by Anonymous in Mathematics

Whats the number?

2007-09-09 16:49:51 · 6 answers · asked by erin j 2 in Mathematics

2007-09-09 16:49:34 · 11 answers · asked by junior1441 1 in Mathematics

2007-09-09 16:49:19 · 9 answers · asked by sokrates 4 in Biology

(4x^3)^3/x^15

2007-09-09 16:48:03 · 4 answers · asked by Don Corleone 1 in Mathematics

2007-09-09 16:47:23 · 6 answers · asked by whiter_shade 2 in Astronomy & Space

Please show your work. Thanks

2007-09-09 16:46:00 · 8 answers · asked by need2noplz 1 in Mathematics

Solve each equation. Then check your solution. [You really don't have to check it]

[Variables on Each side of an Equation.]

First Question:

-14 = s+ 12 / -6

Second Question:

U+12 / -4 = 5

Last Question:

[Define a variable, write an equation, and solve each problem. Then check your solution.]

Find two consective odd intergers whose sum is 116.

2007-09-09 16:45:50 · 4 answers · asked by Lady Twilight 3 in Mathematics

Can your regular idea or imaginative idea or your point of view ever be better than that of the computer programmer? Or the computer programmer's idea or point of view is always smarter than you.

2007-09-09 16:40:33 · 2 answers · asked by M m 1 in Engineering

A certain vector in the xy plane has a y component = 10 & x component = 4. The vector is rotated in the plane so that the x component is doubled. What is the new y component?

I don't get the concept of this question, can anyone provide an explanation to me? thanks

2007-09-09 16:40:10 · 2 answers · asked by superman 4 in Physics

There is some confusion in terminolgy here, probably on my part. Ray, you`re correct about 2mc being the1st dir of e=mc^2: But, that wasn`t my question.
I want to know what the funtion is (integral?) if mc^2 is the 1st dirivity of the funtion I`m looking for!

2007-09-09 16:39:34 · 5 answers · asked by Anonymous in Mathematics

Any help is appreciated. I'm very confused and I don't know where to find help!

2007-09-09 16:38:56 · 7 answers · asked by Anonymous in Mathematics

A golfer rides in a golf cart at a speed of 3.10 m/s for 30.0 s. She then gets out of the cart and starts walking at an average speed of 1.50 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 2.50 m/s?

2007-09-09 16:37:07 · 1 answers · asked by puji831 1 in Physics

CRITICAL THINKING
Your friend states in a report that the average time to circle a 1.5-mi track was 65.414 s. This was measured by timing 7 laps using a clock with a precision of 0.1 s. How much confidence do you have in the results of the report? Explain.

2007-09-09 16:36:18 · 3 answers · asked by Venia c 1 in Mathematics

Homework help!!! Outline the energy in the form of ATP, that is gained and lost during the metabolism of (1) glucose molecule through glycolysis, the Kreb's cycle, and the electron transport chain. Thanks! Any help will be welcomed

2007-09-09 16:29:22 · 1 answers · asked by beeve.stroganoff 2 in Biology

csc x=-2; x in QIV; cot x=?
tan x=3; x in QIII; sin x=?


I think i know the answer to the first one. The Tan would be -1/sqrt3 (you dont have to rationalize) so the cot would be -sqrt3/1 correct?
Thanks!

2007-09-09 16:29:04 · 2 answers · asked by Kevin D 2 in Mathematics

Found this creature in east Jamaica by the sea shore. It's about 2.5 INCHES long. What is it? Anyone?

http://www.geocities.com/agildoni/WHAT-AM-I.jpg

2007-09-09 16:27:20 · 11 answers · asked by Alon G 2 in Zoology

What would be some sports that would be even better in lower gravity?

2007-09-09 16:24:56 · 7 answers · asked by Anonymous in Astronomy & Space

In each minute a pump draws 2.4m³ of water from a well 5m below ground, and issues it at ground level through a pipe of cross-sectional area 50cm². find:
a) The speed with which the water leaves the pipe
b) the rate at which the pump is working.
If in fact the pump is only 75% efficient (i.e. 25% of the power is lost in the running of the pump), find the rate at which it must work.

2007-09-09 16:23:46 · 1 answers · asked by A Freak Like Me 2 in Mathematics