Science & Mathematics - 25 October 2006

It seems deceivingly simple...but I'll ask just in case...

Given: line j is perpendicular to line k, forming a linear pair of angles, angle 1 and 2.

Prove: angle 1=angle 2

2006-10-25 12:34:52 · 6 answers · asked by Anonymous in Mathematics

2006-10-25 12:34:07 · 7 answers · asked by idkwhattoput 2 in Zoology

I need it for my investigatory project. I need some plants that can be used as organic pesticide or insecticide such as neem but I need to use other plants.

2006-10-25 12:33:14 · 7 answers · asked by jayveelim1323 2 in Botany

Kerry and Kelly are twins. One of them lies on Mondays, Tuesdays, and Wednesdays and tells the truth on the pther days of the week. the other lies on Thursdays, Fridays, and Saturdays and tells the truth on the other days of the week. On which day of the week did they have this converstaion.

Kerry: I lie on Saturdays.
Kelly I will lie tomorrow.
Kerry: I lie on Sundays

2006-10-25 12:32:29 · 7 answers · asked by Anonymous in Mathematics

what part of a plant is an onion?

2006-10-25 12:32:08 · 22 answers · asked by motoson 4 in Botany

^

2006-10-25 12:31:32 · 6 answers · asked by fansari31 2 in Chemistry

ok for my hw...we have this workbook page.. and the instruction says: write an equation in function notation for each relation
the proble is that my teacher already gave me the answer ..she wants us to make the table for the equation can someone pliss help me i dont kno how to do it

1. f(x)= x -2
2.f(x)= 1-x
3.f(x)= x+6
4.f(x)= 5 - x
5.f(x)= 2x -1

PLEASE HELP!!!! =[

2006-10-25 12:28:59 · 3 answers · asked by Anonymous in Mathematics

I don't get it, there different numbers/

2006-10-25 12:27:41 · 13 answers · asked by Anonymous in Mathematics

if a car is going to travel 2 miles and finishes the 1st mile in 12 minutes, how fast does the car have to go the 2nd mile to average 60 miles per hour?

2006-10-25 12:26:48 · 5 answers · asked by handyman5218 3 in Physics

2006-10-25 12:26:07 · 8 answers · asked by spidermansme 1 in Chemistry

What kind of rock types are common to that area so I can narrow down my search in identifying them? I can't see any crystals in a majority. One that looks like shale has visibile crystals. The largest is either weathered or is porforitic.

2006-10-25 12:24:37 · 7 answers · asked by Anonymous in Earth Sciences & Geology

but what or who is god? Some theories are, a higher intelligence, some sort of force, or just a simple being. Have you ever really thought about "who, or what" is god. What is your theory, or are you an atheist, beleive there is just no such thing?

2006-10-25 12:23:04 · 35 answers · asked by Anonymous in Earth Sciences & Geology

even if the shade is a different shade, why is it still the same color?

2006-10-25 12:22:59 · 6 answers · asked by dyesmail 3 in Other - Science

A Perfect number is a number that all of its factors excluding itself added together equal itself example 6 factors 3, 2, and 1
3+2+1=6.

2006-10-25 12:21:58 · 7 answers · asked by browndj1983 1 in Mathematics

2006-10-25 12:21:11 · 30 answers · asked by John B 1 in Mathematics

2006-10-25 12:20:06 · 5 answers · asked by Bryan c 1 in Biology

im doing a bio project that was give out yesterday. i have everything done except for 6 questions. it sounds like a lot but its nothing compared to what i did. The questions are about microscopes. I missed that lesson and i told my teacher but she said too bad.

so i come to your help nice people, please help me with these 6 questions.

1. Locate the diaphragm under the stage of the microscope. Move it and record the changes in light as you do so. (there are 5 intesities, 1 lowest - 5 highes)

2. Why is the correct use of the diaphragm important?

3. A penny is an opaque object. Why can't you observe such opaque objects readily without a compound microscope.

4. What is meant by resolution with respect to the microscope?

5. Why must one avoid the coarse adjustement knob to focus under high power?

6. Why is the resolving power just as important as mignifying ability in a microscope?

7. Duz resolution increase wit an increase in magnific when using a light microscope?

2006-10-25 12:19:53 · 12 answers · asked by Anonymous in Biology

2006-10-25 12:19:06 · 31 answers · asked by k4abb14 1 in Biology

2006-10-25 12:16:00 · 4 answers · asked by Anonymous in Biology

2006-10-25 12:15:23 · 5 answers · asked by Anonymous in Physics

like there is for earthquakes?
http://earthquake.usgs.gov/eqcenter/

2006-10-25 12:13:10 · 5 answers · asked by Anonymous in Weather

2006-10-25 12:13:04 · 6 answers · asked by Anonymous in Chemistry

2006-10-25 12:12:34 · 11 answers · asked by softballstemm 2 in Other - Science

I'm having a real hard time understanding the thermochemistry parts of my study guide, Your help is appreciated!

18) All of the following have a standard enthalpy of formation value of zero at 25 degrees C except:
a) CO(g)
b) Fe(s)
c) C(s)
d) F2(g)
e) Ne(g)

answer is A, but how am I supposed to know that?

19) The equation for the standard enthalpy of formation of sodium bromide corresponds to which reaction?
a) Na(g) + 1/2 Br2(g) -> NaBr(g)
b) Na(s) + 1/2 Br2(s) -> NaBr(g)
c) Na(g) + Br(g) -> NaBr(s)
d) Na(s) + 1/2 Br2(I) -> NaBr(s)
e) Na(s) + 1/2 Br2(s) -> NaBr(s)

The answer is D, again I have no idea what this means!

20) Given the following data:
S(s) + O2(g) -> SO2(g) deltaH = -395 kJ / mol
S(g) + O2(g) -> SO2(g) deltaH = -618 kJ / mol

find the heat required for the reaction converting solid sulfur to gaseous sulfur at 298K and 1 atm pressure
a) -1013
b) +618
c) -618
d) -223
e) +223

answer is e
:( we're not allowed to use notes or book

2006-10-25 12:12:16 · 4 answers · asked by SelArom 1 in Chemistry

Will anything climatic occur..like the skin finally falling off, or will it just continue to soak in, and why does it continue to soak in?

2006-10-25 12:10:56 · 6 answers · asked by Anonymous in Biology

A. Eukaryotes
B. Prokaryotes

2006-10-25 12:09:31 · 3 answers · asked by Anonymous in Biology

2006-10-25 12:08:58 · 2 answers · asked by TJ 2 in Other - Science

2006-10-25 12:07:55 · 8 answers · asked by dhpc_raptor 3 in Botany

roast beef has 25g of protein and 11g of calcium per serving. a serving of mashed potatoes has 2g of protein and 25g of calcium. how many servings of each are needed to supply eaxactly 29 g of protein and 61g of calcium?

2006-10-25 12:06:23 · 4 answers · asked by nisha10mabry 3 in Mathematics

you are not secured to the ground, pulling downward on a rope, through a pulley, is it possible to lift more than your own body weight. Remember only one pulley.

2006-10-25 12:04:44 · 7 answers · asked by pulleyman123 2 in Physics