Science & Mathematics - 19 September 2007

The equation for linear s.h.m is

a = -(constant)x

(a) what units does the constant have?
(b) Two s.h.m.s, A and B are similar except that the constant in A is nine times the constant in B. Describe how these s.h.m.s differ.

2007-09-19 10:31:44 · 2 answers · asked by Jezza 2 in Physics

find the integral of (x+4)/(2x^2 + 3x +2)

help!

2007-09-19 10:30:41 · 3 answers · asked by hong_wei886 3 in Mathematics

The meat from a hazelnut has a mass of 0.985 g.
A.) what is the mass of a millionth of a mole (10^-6---aka a micromole) of hazelnut meats?
B.)How many moles are in a pound of hazelnut meats?

2007-09-19 10:25:39 · 1 answers · asked by mary s 1 in Chemistry

I understand that if an object sits on a table, the Normal force presses against the bottom to cancel out the force of gravity from above, and that the Normal force will increace to account for additional forced on the object from above (e.g. a person pressing on it)...

but how/why does this occur? It seems so obvious that it eludes me....

thanks :)

2007-09-19 10:24:57 · 2 answers · asked by Anonymous in Physics

1)A bus slows down uniformly from 72.1 km/h to 0 km/h in22.6 seconds.How far does it travel before stopping ?answere in units of m.
range betwee{168.333-275.283}

2)A car accelerates from rest at -3.05 m/s squared.
a)What is the velocity at the end of 6.4 seconds?answere in unit m
Range {-31.52 to -8.241}
b)What is the displacement after 6.4 seconds?answere in units of m
Range {-126.08 to -16.64}

3)A car traveling at 7.1 m/s acclerates 2.2 m/s squared to reach a speed of 11.0 m/s.
How long does it take for this acceleration to occur ?answere in units of s.
Range {0.568182 -5}



Thank you so much.I need the help and i need to get this homework done .

2007-09-19 10:24:45 · 1 answers · asked by 09chick 1 in Physics

So: aA+ bB+ C = 0. A,B, and C are valued: (16,-99), (-99,31) and (16,35). How do I find a and b?

2007-09-19 10:20:11 · 1 answers · asked by Dean S 1 in Physics

Consider three 10-g samples of water: one as ice, one as a liquid, and on as vapor. How do the volumes of these three samples compare with one another? How is this difference in volume related to the physical state involved?

2007-09-19 10:19:06 · 2 answers · asked by Ryoma Echizen 3 in Chemistry

2007-09-19 10:17:44 · 4 answers · asked by tzoatnsu 3 in Biology

2007-09-19 10:17:31 · 5 answers · asked by Anonymous in Weather

that states it began with energy travelling at the speed of light, and converting into mass?.....thus making perfect spheres?....

2007-09-19 10:17:23 · 7 answers · asked by Anonymous in Astronomy & Space

here are a few problems i need step by step answers plz help me understand this


4x+4=2x+36

9y-1=y-25

14p-8=22+20p

2007-09-19 10:12:42 · 10 answers · asked by ♥♪♥♪Mandy♥♪♥♪ 2 in Mathematics

Do you think NASA & the goverment have already found life in other places like Alpha Centauri, but they wont reveal this information to the public for fear of global jihad?

2007-09-19 10:12:33 · 13 answers · asked by Zaneli 3 in Astronomy & Space

write in the form a+bi, where a and b are real numbers.

preal prob please help.

2007-09-19 10:10:54 · 2 answers · asked by icygurl205 1 in Mathematics

How many grams of C2H5OH must be added to 83.2 g of water to make a 2.53 m aqueous solution of C2H5OH?

I can't figure out what I'm doing wrong...

2007-09-19 10:08:25 · 1 answers · asked by lub1210 1 in Chemistry

What is the longest gestation period recorded of any lifeform living on this planet? I'm not thinking of the African Elephant, but of some small ocean fish, I've heard about it earlier...
Possible, that its only the second longest period, but does anyone know?

2007-09-19 10:08:04 · 4 answers · asked by Anonymous in Zoology

Yup.

2007-09-19 10:07:21 · 5 answers · asked by jakeh816 2 in Mathematics

2007-09-19 10:03:40 · 8 answers · asked by verlencia l 1 in Mathematics

2007-09-19 10:03:33 · 3 answers · asked by Anonymous in Astronomy & Space

I am just curious because of the death of my mother. also, i want to know how do they wash the body and who helps with this processing? if its a female does a female wash n prepare the body or does a male do both genders

2007-09-19 10:01:25 · 4 answers · asked by yawizzy 1 in Biology

It is medium in size, has a white body with pink horizontal stripes across body and legs are like lepoard skin, light brown with dark brown stripes on them.
I heard someone say it might be a crab spider, but I looked at pictures on internet and it didn't look like them.

2007-09-19 09:58:51 · 1 answers · asked by Anonymous in Zoology

2007-09-19 09:57:05 · 13 answers · asked by tootybug31 1 in Geography

2007-09-19 09:54:31 · 11 answers · asked by lucky charm 127 3 in Mathematics

If a=b-c, then

a) c=b-a
b) c=a+b
c) c=a-b

Also how do you get the answer?

2007-09-19 09:54:08 · 11 answers · asked by ami.lewa1403 1 in Mathematics

please help

2007-09-19 09:52:28 · 4 answers · asked by *winterbaby* 2 in Biology

for example
8u=3u+35


i need step by step instructions

2007-09-19 09:50:41 · 5 answers · asked by ♥♪♥♪Mandy♥♪♥♪ 2 in Mathematics

A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 12 inches by 20 inches by cutting out equal squares of side x at each corner and then folding up the sides.

(a) Find a function that models the volume V of the box in terms of x.
V =

(b) Find the values of x for which the volume is greater than 200 in3. Give your answers correct to 3 decimal places. Give as an inequality

(c) Find the largest volume that such a box can have. Give your answers correct to 3 decimal places.

2007-09-19 09:43:52 · 3 answers · asked by Anonymous in Mathematics

1. Tom and Leo jogged together for about 1 hr at the speed of 5 mph. After that, Tom jogged faster by 1 mph and Leo jogged slower by 1 mph. How long will it take them to be 1 mile apart, after they started jogging at different speeds ?

2007-09-19 09:40:42 · 1 answers · asked by JuJu Beanz 1 in Physics

A garden that is 5ft by 6ft has a walkway 2ft wide around it. Find the amount of fencing needed to surround the walkway.

2007-09-19 09:35:35 · 3 answers · asked by Anonymous in Mathematics

I would like to investigate around my town and other surrounding towns. I'm kind of afraid to ask older citizens, because it is a small town, and I don't want people talking about me being crazy, (which I'm absolutely not, by the way- I just have a real interest.) Any way, I can only do so much on the Internet, and I don't really know where to look. I'm not looking to get scammed or made fun of, I just really want some help, I have seen too many quacks when it comes to stuff like this, any help would be much appreciated. Thanks.

2007-09-19 09:34:22 · 13 answers · asked by jennifer d 2 in Paranormal Phenomena

2007-09-19 09:30:05 · 5 answers · asked by Desiree J 1 in Mathematics