Science & Mathematics - 17 December 2007

2007-12-17 13:43:01 · 5 answers · asked by Anonymous in Biology

Ok I'm not one of those lazy people who post they homework online and hope for the best. I'm using this as my last resort. I have been working on this for 1:30, and I have a test on it tomorrow. I have already done 30 other problems and I can't find the answer to these.

Find all solutions [0,2pi)

2(sin^2)2x + 5sin2x - 3 = 0

(2 (tan^2)x - 1)((tan^2)x +1) = 0

2 (sin^2)2x + 5 sin(2x) - 3 = 0

Verify:

[cot^2 x - tan^2 x)]/[(cot x + tan x)^2] = 2(cos^2) x - 1

2007-12-17 13:42:48 · 1 answers · asked by spector_17 1 in Mathematics

on the first formula? Thinking along the lines of abs [-x] < 0 or something similar.

2007-12-17 13:40:35 · 2 answers · asked by Anonymous in Mathematics

what is the difference between a Forensic Pathologists & regular pathologists??? do they both work with dead bodies???

2007-12-17 13:40:02 · 5 answers · asked by Anonymous in Medicine

Is Magnesium lusterous?

2007-12-17 13:34:08 · 1 answers · asked by Anonymous in Chemistry

2007-12-17 13:33:17 · 5 answers · asked by virgo b 1 in Mathematics

2007-12-17 13:31:48 · 1 answers · asked by Anonymous in Medicine

2007-12-17 13:28:52 · 2 answers · asked by Anonymous in Chemistry

Last night we got hit with a really big storm and today school was cancled. The roads are really icy and the plow just about got every road but there are some back roads that they probably didnt get (i live in the country) and i have a really bad cold but don't wanna miss school , and tonight we are supposed to get 2 centimitres . Do you think there will be school tomorrow?
And by the way i live in Nova Scotia (Kentville area)

2007-12-17 13:27:23 · 26 answers · asked by Anonymous in Weather

2007-12-17 13:27:21 · 3 answers · asked by pedram m 1 in Physics

The front of a 1200 kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front 1.20 m of the car collapses in absorbing the shock of a collision.

(a) If a car traveling 26.0 m/s stops uniformly in 1.20 m, how long does the collision last?
answer in s

(b) What is the magnitude of the average force on the car?
answer in N
(c) What is the acceleration of the car in g's?
answer in g

2007-12-17 13:16:03 · 1 answers · asked by kagekiri_tora 2 in Physics

i know snakes have a diffrent kind of vision then humans,
i have a pet snake (red tail boa...2 feet long...)
who seems to watch the tv when he's near it. i try to keep the volume down so as not to scare him...
is he seeing whats on tv, or is he just stareing at something large and warm?

2007-12-17 13:12:46 · 3 answers · asked by Oracle Blackrose ( Pagan ) 4 in Zoology

Why is it hurt if it does so while carrying a heavy load? which of Newton's Law ismost applicable here???


Please help me. .
thanks!

2007-12-17 13:12:01 · 1 answers · asked by Anonymous in Physics

2007-12-17 13:11:43 · 5 answers · asked by Wade T 1 in Geography

2007-12-17 13:10:22 · 11 answers · asked by L!MP 1 in Astronomy & Space

ƒ(x) = A sin (π/2 x) + B ; where A=2 ; B=1
solve the equation ƒ(x) = 2 for 0 ≤ x ≤ 5

2007-12-17 13:08:41 · 3 answers · asked by t S a 1 in Mathematics

does anyone know how to do this one.

2007-12-17 13:07:17 · 3 answers · asked by whitenissanzx 2 in Mathematics

is produced by reactions between oxygen and the Sun’s energy.
is concentrated in the mesosphere.
comes from volcanic eruptions.
is produced by radioactive decay.

2007-12-17 13:01:42 · 2 answers · asked by Anonymous in Earth Sciences & Geology

1. neutral
2. weakly basic
3. strongly basic
4. weakly acidic
5. strongly acidic

2007-12-17 12:59:29 · 12 answers · asked by Anonymous in Chemistry

it looks like two stick figure holding hands but they dont have heads

2007-12-17 12:58:46 · 8 answers · asked by juicymoose724 2 in Astronomy & Space

e.g. period 2

2007-12-17 12:58:00 · 5 answers · asked by THFNB F 1 in Chemistry

decreases only.
increases only.
decreases, then increases.
increases, then decreases.

2007-12-17 12:57:41 · 4 answers · asked by Anonymous in Weather

i want to know where i can buy some anacarus (a plant). thanks!

2007-12-17 12:52:35 · 1 answers · asked by fsh 3 in Botany

2007-12-17 12:52:11 · 12 answers · asked by chaitanya k 1 in Astronomy & Space

its for biology yall thaks

2007-12-17 12:50:49 · 4 answers · asked by Trey W 2 in Biology

Teacher gave us these problems and I really! need help with them. I need an answer and how to solve it!!! Thank you and most detailed answer gets best answer tonight!!


4. At zero degrees Celcius the enthalpy of the melting of water is 6.0 kJ times mol to the -1 power. The enthalpy change when 36 grams of water freezes is...?


5. At 100 degrees Celcius the enthalpy of the vaporization of water is 40.7 kJ times mol to the -1 power. The enthalpy change when 36.0 grams of water vapor condenses is...?


6. A 300mL sample of hydrogen chloride at 690 Torr and 20 degrees Celcius is dissolved in 100mL of water. The solution was titrated to the stoichiometric point with 24.8 mL of a sodium hydroxide solution. What is the molar concentration of the NaOH in solution?

2007-12-17 12:50:42 · 1 answers · asked by macbethbro19 1 in Chemistry

It's for my geology final...I'm leaning towards no

2007-12-17 12:49:26 · 13 answers · asked by Anonymous in Earth Sciences & Geology

Hi today we did the lab and the isopropanol density we've calculated was 1.3g/mL

is this possible cuz this number is lyk way too off

2007-12-17 12:49:22 · 4 answers · asked by Anonymous in Chemistry

Something like
3x^2+15x+5

Ok, that one probably wouldn't factor out evenly... But you guys get it, right?

2007-12-17 12:48:18 · 4 answers · asked by Anonymous in Mathematics

Here is the question...
I have a soil that is 4% organic matter. Calculate the pounds of nitrogen that in will be relased from the OM in one year. Please help. I know I had this in my notes at one time but think that the kids ate them. It is finals week and would appreciate any help you can give me!

2007-12-17 12:45:32 · 3 answers · asked by gem753 3 in Agriculture