Science & Mathematics - 18 November 2006

instructions: decompose each expressiono into partical fractions.
problem: (11x-7)/(2x^2-3x-2)

2006-11-18 08:11:43 · 3 answers · asked by bibbit 1 in Mathematics

2006-11-18 08:08:22 · 2 answers · asked by Anonymous in Botany

Hi, I am taking a Biology course I am in college and find this course to be challenging. I am having trouble memorizing the terms my exam is over Plant structure (roots, stems, lateral & Apical meristems), Fungi, celomate invertabrets, and an overview of animal diversity (protostomes & dutorostomes, segmented and unsegmented bodies ect.). Do you have any helpful tips on ways to memorize these tirms? For the last test I copied all my notes but it didnt help much. Thanks! (sorry for anything misspelled)

2006-11-18 08:03:46 · 11 answers · asked by Anonymous in Biology

2006-11-18 08:01:32 · 16 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-18 08:01:10 · 1 answers · asked by youthebest 2 in Engineering

A. 3 tailed

B. 2 tailed

C. 1 tailed(right-upper)

D. 1 tailed(left-lower)

2006-11-18 08:00:31 · 1 answers · asked by mrkittypong 5 in Mathematics

2006-11-18 07:58:26 · 11 answers · asked by Anonymous in Other - Science

2006-11-18 07:58:22 · 6 answers · asked by Iain M 1 in Engineering

i dont know wat i am doing can somebody please help me!!!!

2006-11-18 07:53:39 · 1 answers · asked by bibbit 1 in Mathematics

Hi, there could u guys help me to get this problem??? thx!!!

v(t)=t^2 - 2t, 0(
answer is 8/3 but i cannot get the right answer!! help me thx

2006-11-18 07:52:33 · 4 answers · asked by Anonymous in Mathematics

I'm in 9th grade and my mom really doesnt know how to do math and my sister isnt here and i dont live with my dad so can someone help me with this question?...The amount of fertilizer needed for a lawn varies directly with the area of the lawn. If 4 pounds of fertilizer are needed for 500 square feet of lawn, how much is needed for Dr. Brown's lawn, which is rectangular in shape and measures 25 feet by 50 feet?..I'm pretty sure you set up a proportion but i'm not sure how you would set it up. If someone could just help me set it up I can find the answer. Thank you!

2006-11-18 07:52:13 · 6 answers · asked by Anonymous in Mathematics

its been buging me

2006-11-18 07:50:58 · 21 answers · asked by jock8787 1 in Mathematics

Where can i find a website that gives me information on how it was used by NASA and how it has been change for the public use.

2006-11-18 07:42:57 · 14 answers · asked by aapp04 1 in Astronomy & Space

Do they pay poachers to catch the animals? Is it ethical?

2006-11-18 07:40:55 · 8 answers · asked by lix321 2 in Zoology

Im doing a project on testin molecules by forming ice crystals and i need to know recipes for making crystals....

2006-11-18 07:34:59 · 4 answers · asked by Anonymous in Chemistry

2006-11-18 07:31:22 · 5 answers · asked by brilliantstar4real 1 in Geography

2006-11-18 07:31:19 · 2 answers · asked by Anonymous in Mathematics

why water is a good solvent for other polar substance???

2006-11-18 07:28:28 · 4 answers · asked by jouliette 1 in Chemistry

2006-11-18 07:27:17 · 2 answers · asked by ludi 2 in Engineering

r(x)= x^3+8/x^2+4

2006-11-18 07:27:07 · 5 answers · asked by jere 1 in Mathematics

I looked up in the sky lately and noticed I dont see the north star (or not shining as bright) anymore.Isn't it on the end of the big Dipper? Could it have moved?

2006-11-18 07:27:02 · 9 answers · asked by Anonymous in Astronomy & Space

... what would be the best cut of meat on a human? (i blame the person that asked the meat question for my train of thought here)

2006-11-18 07:26:25 · 13 answers · asked by Part Time Cynic 7 in Biology

2006-11-18 07:23:38 · 4 answers · asked by hayitsmelda 1 in Astronomy & Space

(a) A person throws a rubber lacrosse ball (mass 0.250 kg) vertically upwards
with an initial speed of 9.81 m/s. The ball reaches the top of its trajectory and returns to
the person’s hand, travelling at 9.81 m/s in a downward direction. The positive y-direction
is taken to be vertically upward throughout this Exercise.
(i) Calculate the time the ball was in the air (from launch to the time at which it returned
to the person’s hand.)
(ii) Calculate the change of momentum py of the ball for the interval calculated in (i).
(iii) Based on the definition of impulse as a product of force and time interval, calculate the
impulse Jy delivered to the ball by the force of gravity (i.e., by the weight of the ball) in
the interval calculated in (i). Your answer should be the same as the change of momentum
found in part (ii).
(b) Now the person moves into a parking garage. The lacrosse ball is again thrown vertically
upward with the same initial speed. This time, the ball hits the horizontal concrete ceiling
of the garage 2.45 m above the launch point. The impulsive collision between ball and
ceiling lasts 0.0500 s. Immediately before and after the collision, the ball has the same
speed. However, after the collision the velocity of the ball is vertically downward, rather
than upward.
(i) Calculate the speed of the ball when it hit the ceiling, and find the change of momentum
of the ball during the 0.05 s collision.
(ii) Calculate the impulse (Jy)gravity delivered to the ball by the force of gravity during the
0.05 s collision.
(iii) You should find that the impulse due to gravity is almost negligible during the 0.05 s
collision. What is this impulse expressed as a fraction of the total impulse due to all forces
acting on the ball in the collision?
(iv) Use the impulse-momentum theorem to calculate the impulse (Jy)ceiling delivered to the
ball by the contact force exerted on it by the concrete ceiling.
(v) Calculate the average force exerted by the ceiling on the ball during the 0.05 s collision.

2006-11-18 07:21:50 · 2 answers · asked by Anonymous in Physics

I read online that there's an asteroid due to hit earth in 2038. It's suppost to destroy the whole world, is this true? is there really an asteroid comeing in 2038?

2006-11-18 07:21:07 · 10 answers · asked by Anonymous in Astronomy & Space

2006-11-18 07:16:49 · 4 answers · asked by Jessica W 1 in Chemistry

A certain compound was found to have a molar mass of 60.095 g. A 3.470 g sample of this compound was burned in pure oxygen gas. The measured amount of CO2 produced was 7.623 g, while that of H2O was 4.161 g. No other products were produced in the reaction.

How many moles of hydrogen were in the original sample that underwent combustion ?

2006-11-18 07:16:33 · 4 answers · asked by MARK 2 in Chemistry

2y - 4x = 4

2006-11-18 07:15:18 · 11 answers · asked by Anonymous in Mathematics

I mean, how do the fibres form and how do muscles clench? Looking at a joint of meat, I'm fascinated at the fibres and the fat.

2006-11-18 07:14:48 · 11 answers · asked by Chris cc 1 in Biology

Please explain in ENGLISH, please try not to use big scientific words.. thank you

2006-11-18 07:13:05 · 14 answers · asked by Anonymous in Astronomy & Space