Science & Mathematics - 18 October 2007

What Does the T mean

2007-10-18 10:49:50 · 2 answers · asked by jphoenix91 2 in Physics

or Greece's ranking in football after the Euro qualifiers.

2007-10-18 10:49:00 · 4 answers · asked by Anonymous in Physics

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.)

2007-10-18 10:48:33 · 1 answers · asked by Rachel 1 in Mathematics

BUCK and HENRY's Horses

Buck and Henry bought three horeses of equal value $840. Buck contributed $450 and Henry conributed $390. By the end if the day, they had sold one horse $840 and decided to end their partnership. How should they divide the money fairly if Henry keeps the two horses? Explain.

2007-10-18 10:47:48 · 1 answers · asked by Rachel E 1 in Mathematics

2007-10-18 10:47:40 · 1 answers · asked by lsjfl;ajfoiweajfmsdfjkj =D 1 in Biology

This came straight from my post lab questions..

What evidence is there from your results that the characteristic color observed for each compound is due to the metal ion in each case? Describe an additional test that could be done to confirm that the color is due to the metal ion.

Also, which metal ion gives off a yellow flame?


Please help me! T-T

2007-10-18 10:46:40 · 2 answers · asked by Taiya Semuru 1 in Chemistry

A sample of neon gas occupies 0.220 L at 0.860 atm. What will be its volume at 29.2 KPa pressure???
can you show me the formula plz???

2007-10-18 10:46:33 · 3 answers · asked by blahhhhhh 2 in Mathematics

I need help with this problem:

x + sin(y) = xy

what does dy/dx = ?

2007-10-18 10:46:26 · 3 answers · asked by Anonymous in Mathematics

ronnie has 5 quarters. francheskia has "k" dollars. how much money does ronnie and francheskia have.write the equation. Let N stand for the answer

2007-10-18 10:46:16 · 3 answers · asked by bodigger 1 in Mathematics

A ray of light traveling in material A strikes the interface between materials A and B at an angle of incidence of 65.3 . The angle of refraction is 39 . Find the ratio nA/nB of the refractive indices of the two materials

2007-10-18 10:46:05 · 1 answers · asked by Anonymous in Physics

anybody know when they did there research?
where?
and why?

big help if anyone knows.

2007-10-18 10:45:59 · 1 answers · asked by Anonymous in Botany

help please

2007-10-18 10:45:35 · 2 answers · asked by steve 1 in Mathematics

ITS OK IF U only get one answer to them

just PLZ HELP

2007-10-18 10:45:17 · 1 answers · asked by Anonymous in Geography

2007-10-18 10:41:25 · 1 answers · asked by Drew 2 in Biology

2007-10-18 10:39:05 · 3 answers · asked by Anonymous in Weather

Given the measure of an arc, find the degree measure to the nearest tenth of the central angle it subtends in a circle of radius 16 cm.

17. 87
18. 5.7
21. 10.24

2007-10-18 10:38:57 · 2 answers · asked by Zoology 1 in Mathematics

2007-10-18 10:37:38 · 8 answers · asked by Anonymous in Earth Sciences & Geology

An object in equilibrium has three forces exerted on it. A 30 N force acts at 90° from the x-axis and a 44 N force acts at 60° from the x-axis. What are the magnitude and direction of the third force?

What is the third force(N)??
What is the degrees??° (counterclockwise from the +x direction)

2007-10-18 10:37:33 · 1 answers · asked by leekite69 1 in Physics

the formula for hydrate is CuSO4 (times) 5H2O, how do i calculate mass percent of water in this? also i can use atomic masses from the periodic table. please help me!

2007-10-18 10:37:26 · 2 answers · asked by cindsterr 3 in Chemistry

A rigid metal container, with a volume of 3.0 L, is sealed outdoors when the barometric pressure is 750 mm of Hg and the air temperature is -3.0 degrees celsius. If the container is brought indoors and placed in front of a fire, what will be the temperature of the air in the container when the pressure is at 1000 mm of Hg?
(a) -4 degrees celsius
(b) 87 degrees celsius
(c) 269 degrees celsius
(d) 360 degrees celsius

2007-10-18 10:37:14 · 1 answers · asked by Jenn S 2 in Chemistry

the expression is 4(98)

2007-10-18 10:37:11 · 6 answers · asked by you-know-who 1 in Mathematics

is there a change when you catch the ball?

2007-10-18 10:35:06 · 3 answers · asked by heeeysuzie 1 in Physics

2007-10-18 10:34:21 · 2 answers · asked by ... 2 in Biology

ok so wats ⎢5⎥ mean in math?? I don't mean the answer but how do you GET the answer

2007-10-18 10:33:58 · 2 answers · asked by Just me 1 in Mathematics

ANSHER OR ELSHE!

2007-10-18 10:33:29 · 3 answers · asked by CuriousCat 1 in Earth Sciences & Geology

the area of a circle is found by the equation A=pie r^2, if the area of a certain circle is 64 pie square centimeters, find its radius r.

2007-10-18 10:33:11 · 5 answers · asked by Dill K 1 in Mathematics

2007-10-18 10:31:40 · 10 answers · asked by Anonymous in Other - Alternative

2007-10-18 10:31:39 · 2 answers · asked by flo_town02 1 in Chemistry

2007-10-18 10:31:10 · 6 answers · asked by jessica s 1 in Earth Sciences & Geology

hey, i am having a lot of trouble with a question on latitudes/longitudes and distances travelled.

i know the latitude and longitude of 2 points on earth.
apparently, early navigators could only determine their latitude, so they tended to sail to the desired latitude then head east or west.

suppose i do this travelling from plymouth (latitude 50° 47' N, longitude 4° 05' W) to miami beach (latitude 25° 47' N, longitude 80° 17' W)

so i head south from 50° to 25° then head west. i worked this out as being 6050 nautical miles, could somebody tell me if this is correct??

but anyway, the main problem i have is, what if i headed west first from the more northerly point, then turned and headed south, would this be the same distance??????

thinking about it, i'd say its a shorter route, but i dont know how to back this up with calculations. can anybody give me a hand with this??
cheers

2007-10-18 10:29:36 · 3 answers · asked by fpa06mr 5 in Geography