Science & Mathematics - 11 November 2007

2007-11-11 15:28:07 · 7 answers · asked by jesicaxnn 1 in Chemistry

undergraduate study

2007-11-11 15:27:30 · 10 answers · asked by Geico 2 in Engineering

2007-11-11 15:27:27 · 6 answers · asked by Anonymous in Mathematics

I think you have to use modular arithmetic.

2007-11-11 15:25:21 · 5 answers · asked by J.T. 1 in Mathematics

How do you evaluate this? I was wondering what method you use to evaluate from :

(2/n) [(1+2i/n)^2 + 9]

to here:

(8i/n^2+ 8i^2/n^3 – 16/n)

Btw, this is an n Σ i=1 function.

2007-11-11 15:22:30 · 1 answers · asked by Anonymous in Mathematics

2007-11-11 15:21:53 · 4 answers · asked by cricket 1 in Zoology

2007-11-11 15:20:52 · 5 answers · asked by Jim H 1 in Mathematics

2007-11-11 15:15:21 · 21 answers · asked by Anonymous in Weather

help

2007-11-11 15:14:55 · 5 answers · asked by Anonymous in Mathematics

1. A 1550 kg car moving south at 12.2 m/s collides with a 2360 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.90 m/s to the north. Find the velocity of the 2360 kg car before the collision.

2. Two carts with masses of 4.92 kg and 2.56 kg move toward each other on a frictionless track with speeds of 5.43 m/s and 3.08 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

2007-11-11 15:10:10 · 3 answers · asked by Anonymous in Physics

the graphs plotted for displacement, velocity and acceleration vs frequency of vibration have some peaks n valleys what r these peaks n valleys called???

2007-11-11 15:09:20 · 1 answers · asked by tornado_on_its_way 1 in Engineering

From 1996 to 1997 the US shipments of personal computers grew from 26,650,000 to 30,989,000. What was the percentage increase in US personal computer shipments?

2007-11-11 15:03:42 · 9 answers · asked by djgirl227 1 in Mathematics

I tested to see which light bulb would make corn the greenest. I used green, ulraviolet, and red light bulbs. The red light bulb made the corn the greenest. Why did the red light bulb make the corn the greenest?

Also: I need to do a research paper for my project. I looked up the history of corn and other stuff about corn. I want to look stuff up about red, green, and ultraviolet light bulbs, but I don't know what to look up! Any suggestions that I could type into Google or any websites with information i could use??

2007-11-11 15:00:57 · 2 answers · asked by lovePINK♥ 1 in Botany

I'm stuck with an exponent question in my chem HW that I don't know how to solve. Can anyone offer some help? I'll give a simplified example of the type of problem:

.2 + e^(4/t) = 5*e^(8/t). I'm trying to solve for t. THanks to anyone who can help!!!

2007-11-11 14:58:25 · 4 answers · asked by Michael T 2 in Mathematics

Given:
a horizontal line segment from (0, 0) to (2, 0)
a semi-circle centred at (1, 0) with endpoints (0, 0) and (0, 2) and assing through point (1, 1), raidus 1 unit

a)Sketch the lower case letters of the alphabet that are possible to print using transformations of the given figures.
b) What other types of transformations would be needed to print the other letters?


Please show your steps and how you solved this question.

Thanks.

2007-11-11 14:57:45 · 1 answers · asked by Shoumik 1 in Mathematics

How did J.J. Thomson come to the conclusion through his cathode ray experiment that electrons, or "corpuscles," have about 1000 times less mass than a hydrogen atom? I know this assumption was incorrect, but how did he arrive at this calculation in the first place?

2007-11-11 14:54:44 · 1 answers · asked by Jewel1016 2 in Chemistry

I couldn't finish all the work I was supposed to do at my school's computer lab...I was sick one of the days we were doing it. Could someone who has the program Starry Night or a similar program help me with some questions?
Thank you!

2007-11-11 14:51:13 · 4 answers · asked by Mary 4 in Astronomy & Space

Here's the summary of the project that I'm doing: I'm going to buy 10 plants (the same ones)
There will be 5 groups of 2 plants. For each group(2 plants each) I will give them each a certain liquid(the same liquid), but the liquid is different for each group(the liquids I'm using are water, water w/20% sugar, Pepsi, Orange Juice, and Monster). I need good bibliography for projects similar to this and what the effects of the liquids might be on the plants. I need them with sources too please. Thanks yo.

2007-11-11 14:46:15 · 1 answers · asked by Anonymous in Botany

astronaut if you have fillings from cavities?

2007-11-11 14:44:58 · 4 answers · asked by Anonymous in Astronomy & Space

based on the moons rotation and atmosphere, describe and account for ots temp. conditions"?

This is my hwrk q? Can u write a pragraph or sumthing explaining pls im confused

2007-11-11 14:44:57 · 4 answers · asked by Grace 1 in Astronomy & Space

Two objects attract each other with a gravitational force of magnitude 0.99 10-8 N when separated by 19.4 cm. If the total mass of the objects is 5.10 kg, what is the mass of each?

2007-11-11 14:42:32 · 1 answers · asked by Anonymous in Physics

What are the differences in the Chemical Engineering and Mechanical Engineering majors?
Specifically:
What are the differences in coursework?
Which field is easier to get a job in with a B.S.? M.S.?
Is one considered easier than another?
Anything else you find important to talk about?

2007-11-11 14:41:37 · 3 answers · asked by Anonymous in Engineering

A 150 N sphere 0.20 m in radius rolls, without slipping 6.0 m down a ramp that is inclined at 34° with the horizontal. What is the angular speed of the sphere at the bottom of the hill if it starts from rest?
(rad/s)

2007-11-11 14:41:25 · 1 answers · asked by Anonymous in Physics

2007-11-11 14:39:59 · 5 answers · asked by supermandingowarrior 1 in Astronomy & Space

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2007-11-11 14:34:15 · 10 answers · asked by KRISSAY F 1 in Mathematics

Solve. (Square root 4x+8)-4=0

2007-11-11 14:34:06 · 5 answers · asked by too_b2000 1 in Mathematics

This meteor idea is annoying! I keep hearing it but it seems to contradict the fact of a gradual extinction over a really really really long period of time. I can appreciate an impact could and probably did kill a lot of species, but extinction of the dinosaurs was a long long way from overnight, or even two weeks from next Tuesday.

2007-11-11 14:33:58 · 5 answers · asked by Peter A Child 1 in Earth Sciences & Geology

Given all numbers in base b, where b is an integer ≥ 2, that consist of alternating 1s and 0s. So, our numbers include 101, 10101, 1010101, etc.

Which of these numbers can be prime?

2007-11-11 14:31:44 · 2 answers · asked by Anonymous in Mathematics

2007-11-11 14:22:56 · 2 answers · asked by sunshine 1 in Mathematics

A= x is an integer that is a multiple of 3
B= x is an integer that is a multiple of 7

A. interger that is a multiple of 7
B. " " of 3
C. " " of 21
D. " " of 10

2007-11-11 14:22:11 · 1 answers · asked by ku 1 in Mathematics