Science & Mathematics - 7 July 2007

How often do tornados pop up?
do they get hurricanes?
floods?
fortworth area

2007-07-07 05:52:14 · 11 answers · asked by Anonymous in Weather

im always confuse in the sign conveNtions...of..:

1) energy release by the system
2) enegy used by the system
3) work done by the system
4) work done on the system
5) work done against the system
6) work done in the system

MAIN QUESTION ARE THE CONVENTIONS DIFFERENT FOR PHYSICS AND CHEMISTRY..............

TELL THE CONVENTIONS FOR BOTH PHYSICS AND CHEMISTRY !!!!!!!!!!!

THANKING U.

2007-07-07 05:52:09 · 4 answers · asked by wizard 1 in Chemistry

Please help here?
Solve the inequality and explain how you found the solution.
x^2-2x-5>0

This is a Pre-Calculus problem.

2007-07-07 05:49:54 · 3 answers · asked by peopleme 1 in Mathematics

What is the boyles law equation for both
1) REAL gas
2)ideal gas

2007-07-07 05:47:54 · 5 answers · asked by wizard 1 in Chemistry

If $5000 is deposited at 6% compounded annually, what will be the total on deposit at the end of 6 years.how much is the interest?

what is the equation or the formula to this problem. And can you please show me the solution. thanks

2007-07-07 05:47:16 · 8 answers · asked by Dariel J 2 in Mathematics

yup i need to have some infomation on those rocks (:

2007-07-07 05:46:39 · 2 answers · asked by Anonymous in Earth Sciences & Geology

is it true always...??
give examples of ideal gases..??

2007-07-07 05:46:30 · 8 answers · asked by wizard 1 in Chemistry

How many grams SO2 can be formed from 20.0 g of S and 160g O2?


How many gramsSO2 can be formed from 20 g S and 15.0 g of O2?

2007-07-07 05:45:21 · 2 answers · asked by Zainab 2 in Chemistry

When the liquids acquires the shape of the container .....
why their volume is less than that of the container...??

give a good answer..all the best...im able to understand all terms...

thanx

2007-07-07 05:45:18 · 5 answers · asked by wizard 1 in Chemistry

either a subject or an event changes it... in any way?

2007-07-07 05:45:16 · 9 answers · asked by gldnsilnc 6 in Paranormal Phenomena

a)would you expect beryllium, element 4, to react vigorously with water? Explain.

b)what is the relationship between the properties of elements and their position on the periodic table?

PLEASE HELP ME WITH THIS!!!!!!!!!!

2007-07-07 05:42:58 · 4 answers · asked by princess 2 in Chemistry

2007-07-07 05:41:36 · 4 answers · asked by kb1990 1 in Physics

A salesman's commision is 5% on all sales upto Rs. 10,000 and 4% on all sales exceeding this. He remits Rs. 31,100 to his parent company after deducting his commision. Find the total sales.
Please help me in solving this questing and also if u can please describe.

2007-07-07 05:39:43 · 3 answers · asked by fha_chafzeto 2 in Mathematics

a)which of the following four metals-calcium, sodium, potassium, or magnesium-is the most chemically reactive? Give at least three reasons.

b)would you expect cesium, element 55, to be more or less reactive than potassium? explain.

PLEASE HELP ME WITH THIS!!!!!!

2007-07-07 05:38:43 · 3 answers · asked by princess 2 in Chemistry

Here's the problem:
From the combustion of C2H6, a mixture of CO2 and H2O with a mass of 5.65 g was produced. The volume of the vessel containing the mixture was 8.45L and the temperature was 150 degrees C.
A)Write balanced equation:
Here I came up with 2C2H6 + 7O2= 4CO2+6H20
B)Determine mole fraction of each:

2007-07-07 05:38:21 · 4 answers · asked by sweetnsouram 1 in Chemistry

how can i make a bonzi tree and what type of tree can i do it with

2007-07-07 05:34:59 · 3 answers · asked by MMMMMM 1 in Botany

electrons flow from low potential to high potential(towards +ve terminal) while the direction of electric force is from high potential to low potential.doesnt this force resist in the motion of electron???

2007-07-07 05:30:36 · 7 answers · asked by abdul r 1 in Chemistry

Then, What is the enthalpy change for the reaction? Include units.

2007-07-07 05:29:53 · 4 answers · asked by Zainab 2 in Chemistry

such as working at a Indian Reservation or low income needy area? I know RN's can...but can LPN??

2007-07-07 05:29:19 · 5 answers · asked by Anonymous in Medicine

please help

2007-07-07 05:28:52 · 7 answers · asked by Tiana R 1 in Mathematics

If $5000 is deposited at 6% compounded annually, what will be the total on deposit? how much is the interest?
what is the equation or the formula to this problem. And can you please show me the solution. thanks

2007-07-07 05:28:12 · 4 answers · asked by Dariel J 2 in Mathematics

I was in the yard this morning and spotted an all glossy black snake about 48 inchs long, I saw the white line on the mouth, it was not defined as I thought it would be, when I approached it it did not move, I've done some research, I am in southeast Kansas, the yard has several overgrown ponds, I fear for my 55 lb dog who is not woods wise and very curious as to these type things.Is this fear justified?

2007-07-07 05:25:55 · 2 answers · asked by gary12850 2 in Zoology

please help

2007-07-07 05:24:56 · 5 answers · asked by Tiana R 1 in Mathematics

2007-07-07 05:24:53 · 7 answers · asked by Anonymous in Other - Science

a)which physical and chemical properties would indicate that potassium and sodium belong to the same group or family of elements?

b)which physical and chemical properties would indicate that calcium and magnesium belong to the same group or family of elements?

c)compare the reactivity of the alkali metals with the reactivity of the alkaline each metals.

PLEASE HELP WITH THIS!!!!!!!!!

2007-07-07 05:23:49 · 2 answers · asked by princess 2 in Chemistry

please help

2007-07-07 05:22:42 · 11 answers · asked by Tiana R 1 in Mathematics

2007-07-07 05:22:21 · 2 answers · asked by devilblues 1 in Chemistry

2007-07-07 05:22:04 · 20 answers · asked by Yvonne S 1 in Mathematics

I HAVE BAD MEMORY,,, DOES "FIND THE ZEROES OF A FUNCTION" MEAN FIND WHAT EACH UNKNOWN IS?... MEANING WHAT X AND Y IS..?
IF NOT,,, PLS EXPLAIN...

Additional Details

14 minutes ago
example, f(x)=2x+6

2007-07-07 05:22:03 · 2 answers · asked by Anonymous in Mathematics

a. A foliated rock derived from granite.
b. Hard, nonfoliated, single mineral rock, fromd under high to mederate metamorphism.
c. Foliated rock psossessing excellent rock cleavage. Generally used in making blackboards.
d. Nonfoliated rock composed of carbonate minerals.
e. Foliated rock contain about 50% platy minerals; named according to the major minerals in the rock.

2007-07-07 05:19:43 · 5 answers · asked by Kerri L B 1 in Earth Sciences & Geology