Science & Mathematics - 13 February 2007

2007-02-13 20:28:46 · 7 answers · asked by Spiky Dude 2 in Astronomy & Space

2007-02-13 20:27:53 · 6 answers · asked by Shelly 1 in Astronomy & Space

A pipe with outer diameter A = 9.2 ± 0.1 , inner diameter B = 7.2 ± 0.1
The thickness of the pipe wall would be C = A – B = 2 ± ??
What is the tolerance for value C

In general, how do we treat tolerances in mathematical operations?

2007-02-13 20:21:35 · 2 answers · asked by H H 1 in Engineering

i need help with these kind of question.Pls help me

2007-02-13 20:17:18 · 5 answers · asked by sochn9022jkl 1 in Mathematics

can give me the simmilarities and differences?thanx!

2007-02-13 20:17:15 · 1 answers · asked by sixteenforever 1 in Geography

2007-02-13 20:12:23 · 10 answers · asked by redrubies 2 in Chemistry

2007-02-13 20:10:24 · 20 answers · asked by vksa2000 1 in Astronomy & Space

How many years will pass until Glacier National Park in Montana will become glacierless once all the ice melts away for good? What are the scientists saying?

2007-02-13 20:06:24 · 3 answers · asked by AviTech 3 in Earth Sciences & Geology

2007-02-13 20:00:21 · 3 answers · asked by Anonymous in Physics

2007-02-13 19:58:48 · 8 answers · asked by Anonymous in Biology

2007-02-13 19:58:38 · 11 answers · asked by Ulysses 2 in Biology

2007-02-13 19:57:19 · 1 answers · asked by Julie C (little ninja) 1 in Earth Sciences & Geology

for ships at sea

2007-02-13 19:57:17 · 3 answers · asked by stanislavtomov85 1 in Chemistry

2007-02-13 19:52:07 · 6 answers · asked by The Green Bastard 2 in Biology

wat is the name of the angle 126 degrees
or 123

2007-02-13 19:51:42 · 4 answers · asked by Anonymous in Geography

2007-02-13 19:51:30 · 1 answers · asked by aida z 1 in Mathematics

question #1. A rocket is fired at a speed of 75.0m/s from ground level, at an angle of 60 degrees above the horizontal. The rocket is fired toward an 11.0m high wall, which is located in 27.0 m away. the rocket attains its launch speed ina negligibly short period of time, after which its engines shut down the rocket coasts. By how much does the rocket clear the top of the wall?

Question # 2. A marble is thrown horizontally with a speed of 15m/s the tope of a building. when it strikes the ground, the marble has a velocity that makes an angle of 65 degrees with the horizontal. From what height above the ground was the marble thrown?


can you please help me... detailed? please.......

2007-02-13 19:49:22 · 2 answers · asked by mai t 1 in Other - Science

Most other bald animals don't look too good. Especially if they have tufts of hair around their bodies.

2007-02-13 19:48:06 · 8 answers · asked by Barbara Doll to you 7 in Zoology

Force of a Baseball Swing. A baseball has mass 0.145 kg.

(a) If the velocity of a pitched ball has a magnitude of 45.0 m/s and the batted ball's velocity is 55.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball.

(b) Find the magnitude of the impulse applied to it by the bat.

(c) If the ball remains in contact with the bat for 2.00 ms, find the magnitude of the average force applied by the bat.

2007-02-13 19:46:03 · 4 answers · asked by M 1 in Physics

i have a reserch parer work. and i really need to get some details about it. can somebody help me out?

2007-02-13 19:45:19 · 5 answers · asked by Anonymous in Medicine

2007-02-13 19:45:07 · 3 answers · asked by shaani_dd4 1 in Earth Sciences & Geology

2007-02-13 19:42:07 · 2 answers · asked by Anonymous in Physics

2007-02-13 19:40:29 · 5 answers · asked by Dennis Ong 1 in Engineering

2007-02-13 19:38:45 · 10 answers · asked by melbournewooferblue 4 in Other - Science

A skier of mass 60.0 kg starts from rest at the top of a ski slope of height 63.0 m.

(a) If frictional forces do −1.04×10^4 J of work on her as she descends, how fast is she going at the bottom of the slope?
Take free fall acceleration to be g= 9.80 m/s^2 .

(b) Now moving horizontally, the skier crosses a patch of soft snow, where the coefficient of friction is Mu_k= 0.150 . If the patch is of width 60.0 m and the average force of air resistance on the skier is 170N , how fast is she going after crossing the patch?

(c) After crossing the patch of soft snow, the skier hits a snowdrift and penetrates a distance 2.50 into it before coming to a stop. What is the average force exerted on her by the snowdrift as it stops her?

2007-02-13 19:38:34 · 1 answers · asked by M 1 in Physics

what is out there to make it cold.

2007-02-13 19:37:54 · 17 answers · asked by brian v 1 in Astronomy & Space

i am thinking of doing this.
I want to open an account.
on the first day i deposit 1 shilling.
on the second day i double what i deposited yesterday so i deposit 2 shillings.
on the third day i deposit double what i had deposited the previouse day so i deposite 2x2=4 shilling.
i continue with this trend for 30 days. each new day i deposit double of what i deposited the previous day.
At the end of 30 days how much money will i have in my account?

2007-02-13 19:37:19 · 6 answers · asked by Omar 1 in Mathematics

2007-02-13 19:37:02 · 11 answers · asked by kitkat 1 in Astronomy & Space

Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 20 m that makes an angle of 45 with the vertical, steps off his tree limb, and swings down and then up to Jane's open arms. When he arrives, his vine makes an angle of 30 with the vertical.

Calculate Tarzan's speed just before he reaches Jane. You can ignore air resistance and the mass of the vine.

2007-02-13 19:35:41 · 1 answers · asked by M 1 in Physics

2007-02-13 19:32:39 · 4 answers · asked by SICK MY DUCK! 1 in Chemistry