Science & Mathematics - 1 August 2007

I took Precalculus (college) in the spring semester. The teacher mostly taught advanced algebraic equations and went over functions. She didn't cover SIN, COS, TAN at all.

Are these required in an AP Calculus class? Should I get some type of prep-book before I take the class?

Any help would be appreciated. I'm nervous about taking this class. I have a 4.0 up until now and would hate to lose it in this class.

2007-08-01 19:32:55 · 4 answers · asked by anicoleslaw 5 in Mathematics

is it 5 to the power 7/4

2007-08-01 19:25:47 · 9 answers · asked by paavni 2 in Mathematics

I know this is easy...I'm forgetting simple algebra here. Can you please help and tell me what the formula is?

2007-08-01 19:21:16 · 8 answers · asked by nimzaj1969 2 in Mathematics

2007-08-01 19:17:03 · 14 answers · asked by Anonymous in Earth Sciences & Geology

I need to refresh my algebra skills, thanks

2007-08-01 19:16:55 · 1 answers · asked by c44w 3 in Mathematics

No Christian answers please, I don't believe in God and I don't need you to quote any bible verses at me

2007-08-01 19:15:53 · 14 answers · asked by djsajkl d 1 in Astronomy & Space

I was watching a movie and the used a chemical that melted a persons flesh. I was wondering if there is such a chemical.

2007-08-01 19:12:56 · 4 answers · asked by Anonymous in Chemistry

F is a vector field, f is a scalar field

One of the definitions given: ( f F) (x,y,z) = f(x,y,z)F(x,y,z)

So I have to prove these:

curl(fF) = fcurlF + (del f) x F

and

curl(curlF) = grad(divF) - del^2 F

Thanks.

2007-08-01 19:10:02 · 2 answers · asked by jpaomp 2 in Mathematics

I'm not sure if it's oxygen or not. But if you think its something else, please explain. Thanks!

2007-08-01 19:07:47 · 6 answers · asked by Anonymous in Chemistry

Why does the air in the northern hemisphere remain north while that in the southern remain south? please explain

2007-08-01 19:07:14 · 4 answers · asked by Aakash 1 in Earth Sciences & Geology

Sources please?

2007-08-01 19:05:43 · 10 answers · asked by Anonymous in Chemistry

through a mix up with a chemical company I got HCG, which I have no use for, but they will not take it back so I am out of $600, does anyone know who would buy this second hand.

2007-08-01 19:04:36 · 4 answers · asked by The Teacher 6 in Medicine

A 28 turn circular coil of radius 3.00 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.0050t + 0.0380t^2, where t is in seconds and B is in tesla. Calculate the induced emf in the coil at t = 4.20 s.

2007-08-01 19:03:23 · 1 answers · asked by dwa9@sbcglobal.net 1 in Physics

log3(x+9)=4 x= ?

note- 3 is down at the bottom

Studying for MPE for csu test. How do I solve this without caculator. I dont think I need law of logs but I understand the law of logs, so ya. Been sitting the whole summer doing no math. Forgot alot.

2007-08-01 19:03:08 · 9 answers · asked by Keshawn 1 in Mathematics

Hydroxyl, aldehyde, keto, carboxyl, amino, phosphate, and sulfhydryl? Please provide your sources if possible! Thanks!

2007-08-01 19:02:35 · 1 answers · asked by Anonymous in Chemistry

Integrate the following indefinite integral:

(sin7x)^12 * (cos7x)^3

Hint: sin^2 + cos^2 = 1

2007-08-01 19:00:04 · 5 answers · asked by Anonymous in Mathematics

If a supernova were to take place in our galaxy, what is the maximum distance in light-years it could be from our solar system and still have the radiation from it turn our planet to plasma or slag (or both). Would we have any warning or was to detect it before the radiation front hit us. If you predict we could know it was coming before it destroyed us, how long would we have to wait? Notice I am looking for a maximum. Obviously a nova in closer proximity would do the same damage but the time from event to destruction would be a bit shorter.

2007-08-01 18:55:35 · 6 answers · asked by Bullfrog21 6 in Astronomy & Space

I've had my current telescope since I was 8...It's nine years old, and I do believe I'm ready to graduate from such a childish scope to a serious, hardcore scope. So, I've started looking around, and I basically have fallen in love with the Orion line of telescopes. I'm having trouble deciding between the Orion AstroView 6 EQ Reflector or the Orion StarMax 127mm EQ Maksutov-Cassegrain. I did, at one time, have my heart set on an Orion SkyQuest XT 8,10,12 Classic Dobsonian. I couldn't make up my mind which Dob to focus on. I live in a converted car hauler. One half is a class room for my sisters and the other half is my room. My family travels. Alot. I don't need severe portability, but I do need to be able to *carry* it up and down/in and out of my trailer. That's what made the dobs unappealing. I've heard the slightest bump, and you have to realign it. I'm on a tight budget. Nothing over $800 is possible! Please help me pick one! Forgive any spelling errors. Suggest an eyepiece too!

2007-08-01 18:52:41 · 6 answers · asked by silvertinker14 2 in Astronomy & Space

Also, say for instance there was a terrestrial planet that had a diameter 8 times that of Earth. Would it be possible for a planet of that size to have a gravity similar to Earth’s?

2007-08-01 18:50:45 · 9 answers · asked by Red 4 in Other - Science

mind over matter? pure energy traveling through astral planes upon death? dimension hopping? portal? humanitys last evolution beyond a physical body? it makes cence

2007-08-01 18:49:17 · 12 answers · asked by john constantine 2 in Physics

2007-08-01 18:43:32 · 3 answers · asked by chcklsgrl89 1 in Astronomy & Space

2007-08-01 18:43:12 · 10 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-01 18:41:18 · 4 answers · asked by Anonymous in Physics

Eq. wt. of an element is defined as that wt. of element in grams which reacts with 1 part by wt. of H2 or 8 parts by wt. of O2 or 35.5 parts by wt. of Cl.

Can u explain reacts with 1 part by wt. of H2 or 8 parts by wt. of O2 or 35.5 parts by wt. of Cl

2007-08-01 18:38:08 · 2 answers · asked by bullet 2 in Chemistry

2007-08-01 18:35:03 · 3 answers · asked by nai 1 in Biology

Factor this trinomial using the ac method.

2007-08-01 18:25:10 · 8 answers · asked by Anonymous in Mathematics

I was coming the other day from northern Ontario down to Toronto the moon was barely visible, but it was huge as it rose higher in the sky the smaller it got in size why please thanks

2007-08-01 18:22:46 · 6 answers · asked by buba 1 in Astronomy & Space

A triangular sail has an area of x^2 + 5x + 6 square meters and a height of x + 3 meters. Find the length of the sail's base.

2007-08-01 18:19:11 · 4 answers · asked by Anonymous in Mathematics

Does anyboky knows what are the maximum amounts of mold and or fungi that are allowed in a working enviroment ie: offices,factories and the like.
Please give the PPM or the equivalent that should be the parameter

2007-08-01 18:18:01 · 2 answers · asked by quezalte1 1 in Botany

factoe the polynomial completely

2007-08-01 18:16:33 · 4 answers · asked by Anonymous in Mathematics