Science & Mathematics - 7 January 2007

2007-01-07 15:09:35 · 5 answers · asked by abc2612546 2 in Biology

50 gm's = how many ml's

2007-01-07 15:09:20 · 6 answers · asked by Emma Rose 3 in Mathematics

i need help i looked everywhere

2007-01-07 15:08:15 · 4 answers · asked by Anonymous in Zoology

2007-01-07 15:05:44 · 4 answers · asked by Steenskees 2 in Biology

A skier starts from rest at the top of a 45 m high hill, skis down a 30 degree incline to valley and continues up a 40 m hill. The heights of both hill are measured from the valley floor. Assume you can neglect friction and the effect of ski poles. How fast is the skier moving at the bottom of the valley? What is the skiers speed at the top of the next hill? Would the angles of the hills affect your answers?

2007-01-07 15:05:35 · 3 answers · asked by Anonymous in Physics

What is the Chemistry Geometry name for hydrogen, carbon dioxide, boron trihydride?

2007-01-07 15:04:16 · 3 answers · asked by mcsquare3245 2 in Chemistry

2007-01-07 15:03:14 · 2 answers · asked by rockingorangejuice 2 in Biology

i'm doing an age pyramid for a deer population using the fawns and adults but i don't know which ages are considered the baby ages. from 1 to 10 which ages are the fawn ages. Any info. would be very helpful. Thank you very much

2007-01-07 15:02:45 · 9 answers · asked by dam 2 in Zoology

preferrably more than one reason thank you =]

2007-01-07 15:01:17 · 5 answers · asked by im ur daddy 2 in Chemistry

To attain the maximum range, a projectile has to be launched at 45 degrees if the landing spot and the launch spot are at the same height (neglecting air-resistance effects). Explain how the relation between the vertical and the horizontal components of the initial velocity affects the projectile range.

2007-01-07 15:00:59 · 1 answers · asked by shaft0208 1 in Physics

which has more energy and power and is more destructive,the biggest spirit bomb on dragenballz or the impact of a 300 mile wide asteroid moving at 75.000 MPH.

2007-01-07 15:00:47 · 8 answers · asked by carlos sims 2 in Physics

I need some help finding out what the Lewis Structure is for hydrogen, cardon dioxide, and boron trihydride.

Thanks for your help.

2007-01-07 15:00:45 · 1 answers · asked by mcsquare3245 2 in Chemistry

What is the equation to find the percentage or error and percentage of yield? is that the same thing?

2007-01-07 14:58:37 · 1 answers · asked by *shy*earthangel* 1 in Chemistry

I am a freshman in high school who has lost her notes! EEP!

2007-01-07 14:58:30 · 5 answers · asked by Myaloo 5 in Mathematics

ok i was doing a heat release question where i am given two molecules and the bond energies of each of their pieces and a reaction
i was asked to calculate the change in heat for the reaction
i found that the reactants side was 345 less than the products side
i know the formula says that i am to take the products side and subtract from the reactants side but explain to me how that makes logical sense
that would mean you get an answer reactants-products=-345
i knew this but i thought about it and i wrote +345 (i got it wrong) because if it were the other way that would mean that the reactants give up an amount of energy less than that which the products need to form and the reaction gives off energy this is impossible
(no free lunch rule)

how can u need more energy than u have and still give off energy
(energy is measured from the point of view of the system remember)

2007-01-07 14:58:15 · 2 answers · asked by dheeraj 3 in Chemistry

how to estimate labor cost and manpower needed in a certain project.

2007-01-07 14:57:54 · 3 answers · asked by Limarx 1 in Engineering

Are artificial lights beneficial and if so, what kind should i buy and how long should they be left on the plants?

2007-01-07 14:54:43 · 5 answers · asked by Anonymous in Botany

need answer to solve a math sudoku

2007-01-07 14:52:51 · 5 answers · asked by janetjj03 1 in Mathematics

2007-01-07 14:52:10 · 16 answers · asked by Puff the Magic Dragon 2 in Weather

Solve the system by addition:
3x + 7y = 1
x + 2y = 1

Solve the system by substitution:
3x + 5y = 2
y = -x + 2

I completely do not remember how to do this math. It's been a year or so since I've done this sort of math, so I'm still a bit rusty at it. Any help is much appreciated! If you can explain the steps you took to get the answers that would be awesome :) Thanks in advance.

2007-01-07 14:51:40 · 6 answers · asked by glitteringfairywings 2 in Mathematics

Can someone please tell me or give me a site that will tell me this information on frogs for my AP Biology class:

(a) A description of each of the major embryonic stages.
(b) The importance of gastrulation.
(c) An example of embryonic induction.

Thank YOU!

2007-01-07 14:50:06 · 2 answers · asked by Anonymous in Biology

I'm doing a school project on animal cruelty and I want a clip of seal clubbing to show the class.

2007-01-07 14:49:40 · 10 answers · asked by Kevin 1 in Zoology

does it bring the flavor out in food so well.

2007-01-07 14:49:35 · 2 answers · asked by rhino_man420 6 in Chemistry

please show work have deadline for tomorrow and iam lost

2007-01-07 14:48:40 · 19 answers · asked by divinestones07 1 in Mathematics

2007-01-07 14:48:34 · 6 answers · asked by Anonymous in Mathematics

I solved part I and II, but I can’t solve part III. Help me please (thank you).

I)Find the wavelength of the photon emitted when a hydrogen from state n=4 to n=1
Ans: 9.7*10^-8 m

II)What is the momentum of this photon?
Ans: 6.6*10^-27 N.S

III) What is the recoil speed of the hydrogen atom after it has emitted this photon?

2007-01-07 14:48:10 · 2 answers · asked by Kameliya 2 in Physics

2007-01-07 14:47:24 · 6 answers · asked by Sammy 2 in Earth Sciences & Geology

When I was a student in grade school, I was taught that a theory was a plausible explanation for phenomena which we could not be absolutely certain about. Many years later, I was in a college science course when my prof announced that just because a theory has not been proven that that does not mean the theory is not a solid fact. So which way is it?

2007-01-07 14:44:37 · 6 answers · asked by Unorthodox 3 in Other - Science

If so...why not makes buildings that way in the first place? Seems like if you are going to live in an tornadoe infested area it would make sense to build the buildings right the first time. Probaly save money in the long run.

2007-01-07 14:44:27 · 9 answers · asked by Anonymous in Weather

2007-01-07 14:43:20 · 14 answers · asked by Person 1 in Mathematics