Science & Mathematics - 21 November 2006

What is the difference between the "C" Button on a calculator, and the "CE" button, some have one, and some have both, what do these mean, and what function does each individual button serve?

2006-11-21 08:43:49 · 8 answers · asked by Anonymous in Mathematics

Travis and Roy own a shipping company that travels 450 miles between Dalls and Pecos.
Suppose Travis leaves Dallas traveling at 55 MPH. After 45 minutes, he notices he forgot the keys to the warehouse he's going to. He calls Roy. Assume Roy leaves immediately when Travis calls him. Roy travels at 65 MPH. Is it possible for Roy to catch up with Travis before he reaches Pecos (a distance of 450 miles)? If he can, how long will it take and how far will they be from Dallas at that time?

2006-11-21 08:43:08 · 6 answers · asked by Jesus 2 in Mathematics

dilute hydrochloric acid is titrated with 1.20 mol dm -3 sodium hydroxide solution (NaOH). 20.0 cm3 of the dilute hydrochloric acid (HCl) is require dto neutralise 25.0 cm3 of sodium hydroxide solution.
what is the concentration of the dilute hydrochloric acid in mol dm-3

2006-11-21 08:40:56 · 4 answers · asked by Anonymous in Chemistry

2006-11-21 08:40:26 · 4 answers · asked by Carpe Diem (Seize The Day) 6 in Mathematics

Looks real to Me

2006-11-21 08:40:22 · 3 answers · asked by Wallkill747 1 in Astronomy & Space

2006-11-21 08:39:53 · 5 answers · asked by thad 1 in Mathematics

2006-11-21 08:39:08 · 6 answers · asked by ttlycrazy05 1 in Chemistry

I want to findout which scienteis found that there are male & female in plants as well, and also when it was discoeverd.

2006-11-21 08:38:55 · 3 answers · asked by mahmood757 2 in Botany

I have done this and arrived at sqrt2 cis45 but it is wrong and I don't know why or how to get the right anser. Can anyone help. please? Thanks!

2006-11-21 08:38:50 · 2 answers · asked by mdetaos 3 in Mathematics

I want to know the relationship between denisty and specific gravity and i need a good detailed explanation.

2006-11-21 08:38:24 · 2 answers · asked by maham n 1 in Earth Sciences & Geology

the equatorial diameter or the polor diameter

2006-11-21 08:37:41 · 7 answers · asked by jessica loves u all 1 in Geography

2006-11-21 08:33:21 · 6 answers · asked by jha 1 in Engineering

How do i find this co-ordinate change matrix, and any co-ordinate change matrix in general?

In R^2 find the coordinate change matrix from the basis B1={(2,1)(2,0)} to the basis B2={(–2,–1),(0,1)}

2006-11-21 08:31:59 · 4 answers · asked by drummanmatthew 2 in Mathematics

Please help! And if you can explain it to me that would be great!

2006-11-21 08:31:39 · 4 answers · asked by Me<3JB 2 in Chemistry

how do the physical and chemical propertiesof the halogens compare to the noble gases

periodic table question

2006-11-21 08:31:14 · 5 answers · asked by Anonymous in Earth Sciences & Geology

heya, why do fossils appear in some rocks more than other rocks?? thnx!!

2006-11-21 08:31:05 · 12 answers · asked by Anonymous in Earth Sciences & Geology

That is, could it answer a question before it has been asked? I know that quantum physics includes "negative energy"....

2006-11-21 08:28:54 · 10 answers · asked by Aaron W 3 in Physics

I also need to know the amount of calcium, nitrogen, carbon, iron, phosphurus, and sulfur. Thanks

2006-11-21 08:27:59 · 10 answers · asked by mewoow 1 in Chemistry

date found
landforms
climate
people

2006-11-21 08:27:56 · 2 answers · asked by Princess101 1 in Geography

2006-11-21 08:27:40 · 5 answers · asked by tati_iz_sexy23 1 in Biology

2006-11-21 08:26:30 · 7 answers · asked by Anonymous in Chemistry

2006-11-21 08:25:45 · 11 answers · asked by Anonymous in Mathematics

i am trying to grow algae for a science experiment by placeing them in jars and in different locations with the lid on/off. I am trying to look up some backup info, and how to MEASURE THE GROWTH of the algae.

2006-11-21 08:23:26 · 3 answers · asked by Poptart 3 in Botany

I really need this information for a science project

2006-11-21 08:23:07 · 8 answers · asked by Joana T 1 in Other - Science

2006-11-21 08:20:38 · 5 answers · asked by jset1989 2 in Chemistry

A one-liter container completely filled with mercury has a mass of 13.6 kg and weighs 133.3 N. What is the buoyant force on the container if the container is placed in water?

Thank You

2006-11-21 08:20:24 · 1 answers · asked by rippa q. 1 in Physics

2006-11-21 08:20:12 · 9 answers · asked by Anonymous in Biology

2006-11-21 08:18:06 · 6 answers · asked by Anonymous in Mathematics

HELP! I have to take an SAT as part of a gifted program and I don't understand functions! I will really appreciate it if you can at least explain what f(x) is and what it means that it is a whole number.

2006-11-21 08:17:40 · 7 answers · asked by kpteen1030 2 in Mathematics

One on one, bare knuckles/paws/fins/etc, no weapons, no holds barred, anything goes! Last man/animal alive wins

2006-11-21 08:16:37 · 40 answers · asked by Anonymous in Zoology