Science & Mathematics - 15 November 2007

Helpp.

2007-11-15 13:46:11 · 13 answers · asked by babiifaceboo12 1 in Mathematics

2007-11-15 13:45:02 · 15 answers · asked by liban A 1 in Mathematics

Helpp.

2007-11-15 13:44:18 · 4 answers · asked by babiifaceboo12 1 in Mathematics

Two blocks, A and B, are connected by a compressed string. The mass of bock A is twice that of block B. Immediately after release, compare the net force on block A to the net force on block B. The table is frictionless and the mass of the spring is zero.

1)There is no net force on block A or block B.

2)Fnet of A is equal in magnitude and direction to Fnet B and not zero.

3) Fnet B, will be in the opposite direction and half as large as Fnet A.

4)Fnet A, and Fnet A are both directed toward the left with Fnet A larger than Fnet A, but not twice as large. Block A is pulling block B.

5) Fnet A, will be in the opposite direction and half as large as Fnet B.

6) Fnet A is equal in magnitude and opposite in direction to Fnet B, and not zero.


I think it is 5 because A is twice as massive as B so it would take more force to move it the the same and they will be going in opposite directions. Do you agree?

2007-11-15 13:42:41 · 5 answers · asked by Katie E 2 in Physics

Why is it that pickels have those little bumps on them?

2007-11-15 13:41:19 · 2 answers · asked by Havie 2 in Biology

i have this equation in geometry and im stuck, can someone solve it for me and show or explain how,. thanks much

2007-11-15 13:41:13 · 6 answers · asked by Russ 2 in Mathematics

how can i describe the nucleus and it's contents???

2007-11-15 13:40:09 · 13 answers · asked by crazy g 1 in Biology

a 900-kg car strikes a huge spring at 20 m/s compressing it 5.0 meters. (a) what is the spring constant of the spring? (b) how long is the car in contact w/ the spring b4 it bounces off in the opposite direction?

2007-11-15 13:35:34 · 1 answers · asked by some guy 2 in Physics

I have a paper due tomorrow on it;;;;;

&+ have no clue.

help??

ill return this HUGE favor!
=]

2007-11-15 13:34:36 · 6 answers · asked by Shari Song? 1 in Geography

2007-11-15 13:34:15 · 13 answers · asked by Yahoo! 5 in Astronomy & Space

there are 12 liters of water there are three containers one that holds 12 liters, another that holds 7, and another holding 5.
how do i get 2 6 liters?

2007-11-15 13:32:24 · 1 answers · asked by angie 2 in Physics

Integral of:

dx/[(x^4)(sqrt(a^2-x^2))]

2007-11-15 13:31:29 · 3 answers · asked by ǝɔnɐs ǝɯosǝʍɐ Lazarus'd- DEI 6 in Mathematics

Discuss in detail buoyancy and its relationship with Archimedes principles.

2007-11-15 13:31:23 · 4 answers · asked by juwiegorawr 2 in Physics

Explain why grease on clothing will not come out with cold water.

Thanks in advance!

2007-11-15 13:31:06 · 4 answers · asked by Gabbs 3 in Biology

please help

2007-11-15 13:29:26 · 5 answers · asked by deniseg1993 2 in Biology

2007-11-15 13:27:27 · 4 answers · asked by Anonymous in Parapsychology

Chemistry and Percent yield...can anyone help?
1.LiOH + CO2 → Li2CO3 + H2O

If the percent yield of the above reaction is found to be 92.52 %, how many grams of Li2CO3 are produced from the complete reaction of 88.02 g of CO2 ?

2.What is the percentage of sulfur in NiSO4 by mass ?

3. 65.45 % C
5.49 % H
29.06 % O

4.13 g of the compound fills a 179.0 ml bottle with a pressure of 2593.4 mm Hg at a temperature of 24.6oC. What is the molecular formula of this compound ?

4.
A certain compound was found to have a molar mass of 74.122 g. A 1.512 g sample of this compound was burned in pure oxygen gas. The measured amount of CO2 produced was 3.591 g, while that of H2O was 1.837 g. No other products were produced in the reaction. How many moles of carbon were in the original sample that underwent combustion ?

2007-11-15 13:25:52 · 2 answers · asked by matt b 1 in Chemistry

f(x)=5*x^1/3(x+3)^2/3

2007-11-15 13:25:02 · 2 answers · asked by Anonymous in Mathematics

Find the limit of 1-cos(3x/2)/(1+x-e^x) as x goes to 0, by using Maclaurin series for 1-cos(3x/2) and 1+x-e^x

2007-11-15 13:24:29 · 1 answers · asked by ! 2 in Mathematics

i need to know this before i go to bed cause i have a test and i need to understan this

2007-11-15 13:23:53 · 2 answers · asked by diva 1 in Physics

1/a + 1/b + 1/c + 1/d + 1/e + 1/f + 1/g = 1

Find 7 different unit fractions whose sum is 1. Note: These unit fractions cannot be the same number.

2007-11-15 13:23:48 · 3 answers · asked by James 1 in Mathematics

I'm curious, as every time I look at my bedroom wall or ceiling, I see at least three little baby spiders. I kill those, more come back. It's like a videogame. But not. Any. Fun.

They're not so horrible now, but I am deathly afraid of full-grown spiders. When will this happen?

Make it stop..... :(

2007-11-15 13:23:18 · 3 answers · asked by avacado pie 4 in Zoology

I was wondering if someone could tell me a general overview of Newton's metod and how it relates to Calculus and Derivatives? What is the difference between Newton's method and the Bisection method? I'm trying to review for a test tomorrow but having trouble finding the difference and what Newton's method is about.....

Thanks..

2007-11-15 13:22:02 · 3 answers · asked by Anonymous in Mathematics

As a rocket carrying a space probe accelerates away from Earth, the fuel is being used up and the rocket's mass becomes less. When the mass of a rocket (and its fuel) is M and the distance of the rocket from the Earth's center is 1.5rE, the force of gravitational attraction between Earth and the rocket is F1.

When some fuel is consumed causing the mass to become 0.5M and the distance from Earth's center is 2.5rE, the new gravitational attraction is f2. Determine the ratio of F2 to F1.
The symbol rE is earth's radius.

2007-11-15 13:21:24 · 2 answers · asked by To-the-Stars 4 in Physics

Suppose f and g are both concave upward on (-infinity, infinity). Under what condition on f will the composite function
h(x)= f(g(x)) be concave upward?

2007-11-15 13:21:11 · 2 answers · asked by Anniepannie06 2 in Mathematics

What is the limit of the series sum of (-1)^n * Pi^(2n+1) * 3^(2n+1) / [4^(2n+1) * (2n+1)! ] as n goes from 0 to infinity

2007-11-15 13:19:40 · 1 answers · asked by ! 2 in Mathematics

Show that the curves y= e^(-x) and y= -e^(-x) touch the curve
y=e^(-x)*sinx at its inflection points.

2007-11-15 13:17:15 · 1 answers · asked by Anniepannie06 2 in Mathematics

2007-11-15 13:17:12 · 5 answers · asked by Victoria R 2 in Physics

2007-11-15 13:16:20 · 17 answers · asked by Vedran Z 1 in Mathematics

in the moon? a.1.0m/s b.10.5m/s c.1.67m/s d.1.60m/s

2007-11-15 13:15:55 · 4 answers · asked by Omeje I 1 in Astronomy & Space