Science & Mathematics - 8 November 2006

2006-11-08 04:12:36 · 23 answers · asked by Scott H 1 in Earth Sciences & Geology

~*1*~A force can be defined as:

A the ability to cause acceleration
B the ability to cause changes in motion of an object
C a push or a pull
D all of the above

~*2*~A change in velocity of an object indicates that:

A the object has accelerated
B an unbalanced force has acted on the object
C the object has sped up, slowed down, or changed direction
D all of the above

~*3*~According to Newton's Second Law, the greater a force on an object, the greater its:
A mass
B acceleration
C velocity
D speed

2006-11-08 04:10:57 · 5 answers · asked by maconheira 4 in Physics

I love dogs and monkeys, but I'm not sure whether I should bring both of them together in my house. Do you think they will not fight and live happily with each other, or will bringing them both in the house at the same time cause a nuisance?

2006-11-08 04:08:40 · 9 answers · asked by Vivek 2 in Zoology

2006-11-08 04:08:24 · 4 answers · asked by hello motherhood!!! 1 in Astronomy & Space

1) What is the mass of 1.33 x 10^4 moles of O2 at STP??

2) Write a balences equationfor the following;
hydrogen gas + oxygen gas -> water vapor
hydrogen gas + chlorine gas -> hydrogen chloride gas

3) A chemist determines the mass of a sample of gas to be 3.17g. It's volume is 942 ml at 14 C (degrees) and 1.09 atm. What is the moler mass of the gas?

If you can help me out..... How did you get your answers, I AM SO LOST right now.... and I knida need help with this stuff from where I can get it.

Please and Thank You!!!
~Baby-Blue~

2006-11-08 04:07:02 · 2 answers · asked by ariel 2 in Chemistry

We know that some people get fat much easier than others, even they eat the same amount of food and have the same lifestyle. The reason why some people are fatter than others is that our ancestors live in an environment where food supply is very limited and unstable (such as due to cold weather). Their bodies evolved so that excess nutrition is stored as fat, as a survival tool. Now there isn’t such a need for this function so a lot of people has evolved to adapt to the new environment which their bodies do not store excess fat. The conclusion is therefore, fat people evolve slower than thin people.

2006-11-08 04:06:34 · 16 answers · asked by Kevinlad 3 in Biology

Just think of it! Barely about 150 years ago there was no -
aeroplane, space craft, television, mobile phone, satelite, computer, internet and ALL THE BREADTH-TAKING INVENTIONS of the 20th & 21st centuries. If mankind has been in existence since millions of years ago, how come we did not find breath-taking inventions by our forebears of say, only 10,000 years ago? Why did it take millions of years for us to advance in our IQ to be able to invent some of these things? Don't we think that man has not been that long in the universe?

2006-11-08 04:05:07 · 20 answers · asked by The Pastor 1 in Earth Sciences & Geology

It may be the freezer? I am only partly femiluler to autoclave, in the goldmining, that I think separates gold from by a chemical process.

2006-11-08 04:03:41 · 4 answers · asked by 2b4.fun 3 in Engineering

I am currently working on balancing chemical and formula equation and we are doing something with oxidation numbers. I understand the basics, but when she throws on single and double replacement equations, I'm lost again. If someone can explain this to me that would be great. Thanx in advance

2006-11-08 04:03:05 · 1 answers · asked by Anonymous in Chemistry

set up but do not evaluate int[int[int[x^2+y^2+z^2dV]]] where Q is region bounded by z = root(16-x^-y^2) and the xy plane, and inside the planes y=0, x=0 for x>=0

2006-11-08 04:02:33 · 1 answers · asked by mjbayunl 2 in Mathematics

(a) Has a magnetic dipole moment
(b)Exerts an electric force on the nucleus equal to that on it by the nucleus.
(c)Does not produce a magnetic induction at the nucleus
(d)All of the above.

2006-11-08 04:01:35 · 1 answers · asked by muteeu b 1 in Chemistry

It Brownian Motion therory, It is believed that every particle is moving. In the model I have seen it appeared to be random. My question is this; Does the movement of particles have a definite pattern, and how long does it take to repeat its self?

2006-11-08 04:01:25 · 2 answers · asked by happylife22842 4 in Physics

I know handwashing is definately one, but need more points. Thanks.

2006-11-08 04:01:10 · 2 answers · asked by Miss. Me 2 in Biology

2006-11-08 03:57:50 · 3 answers · asked by houdini 3 in Zoology

if i know that the variance of a certain amount of numbers is X.
I also know that these numbers have a mean of X
1)What would be the variance if i divide all these numbers by 5?
2)What would be the variance if i divided all these numbers by 5 and then added an extra number (say the number is 5).

2006-11-08 03:54:27 · 1 answers · asked by jackal_04 1 in Mathematics

the pressure of the gas in the 1.00 L bulb is 676 mm Hg and that of the gas is the 0.500 L bulb is 431 mm Hg
What is the pressure (atm) of the system when both valves are opened, assuming the temperature remains constant ?
(neglect the volume of the capillary tube connecting the bulbs)

2006-11-08 03:51:41 · 1 answers · asked by simonkf2002 1 in Chemistry

2006-11-08 03:50:44 · 10 answers · asked by Anonymous in Physics

It is also known that 2.58 g of the gas has a volume of 1.00 L and a pressure of 0.980 atm at 50.8 oC.
What is the molecular formula for the gas ?

2006-11-08 03:50:31 · 1 answers · asked by simonkf2002 1 in Chemistry

Both the USA and the former Soviet Union relied on former German scientists to get their space program going. What gave the US the edge to win the race to the moon was the thousands of Canadian engineers who came from the cancelled Avro Arrow project. The Canadians arrived in the US for the birth of NASA in 1959.

2006-11-08 03:49:06 · 3 answers · asked by Anonymous in Astronomy & Space

physics

2006-11-08 03:48:47 · 4 answers · asked by Deysi R 1 in Physics

i came home the other day to find these things on the outside of my house, EVERYWHERE. the were mainly around the edges of the house, close to the grass. my dad said he sprayed the lawn with some kind of insect repellent, not sure if that has anything to do with their appearance, but have a look.

http://img454.imageshack.us/img454/1733/mvc024sbo1.jpg

2006-11-08 03:46:28 · 17 answers · asked by johnny d 2 in Zoology

2006-11-08 03:39:25 · 2 answers · asked by anu p 1 in Chemistry

2006-11-08 03:38:57 · 7 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-08 03:37:58 · 25 answers · asked by djmonsta200883 2 in Biology

It takes 24 minutes to completely fill my bathtub and only 8 minutes to drain a full tub. How long will it take to empty a full tub if the water is left on?

2006-11-08 03:37:31 · 8 answers · asked by shadowcat_97008 1 in Mathematics

I need help, with formulas and step by step is possible please.
8.2 - Find the area of the normal curve that lies between the following Z scores.

A} Z= -1.94 to Z=1.94
( The first step was I drew the bell curve with this area shaded in. Then it says, I need to go to the back of the book and look up the probability of it? I go down to 1.9, and then what do I go to 0.00. 0.01 etc? And, do I do anything with thosenumbers.?
B) Z=-1.12 to Z=2.42
C) Z= -.89 to Z= 3.56
D) Z= -2.00to Z= 2.00
E) Z= -.40 to Z= .49
F) Z= -1.96 to Z= 1.96


However, I am still a little confused. How do I know which number to look up in the back of the book? Also, I tried a few practice problems and looked up the answers, and Im still gettint them wrong....
I got... -1.94 and 1.94,
I looked up in back of book got, 0.4738, subtracted that from 1. got 0.5262. subtracted the higher from the lower, got... 0.0524, is this correct?

for Z= -1.94 to Z= 1.94 finding the A

2006-11-08 03:37:24 · 2 answers · asked by Heather N 2 in Mathematics

chemical properties for family 13 in periodic table, i need the answer for school

2006-11-08 03:36:22 · 1 answers · asked by J 1 in Chemistry

ts the length of the third side?

2006-11-08 03:35:38 · 15 answers · asked by elite 3 in Mathematics

2006-11-08 03:33:52 · 9 answers · asked by Assad 3 in Botany

Simplify the algebraic expression by combining similar terms.

x - 0.8x - 2.9x

in this case what is x on it's own

2006-11-08 03:31:53 · 12 answers · asked by Me 6 in Mathematics