Science & Mathematics - 11 November 2007

What is the cause of precipitation?

2007-11-11 08:34:58 · 3 answers · asked by ANICETA O 1 in Geography

2007-11-11 08:33:29 · 5 answers · asked by Anonymous in Zoology

2007-11-11 08:22:58 · 7 answers · asked by mrj 1 in Mathematics

A propane tank is made up of a cylinder with hemispheres on each end. If the total length of the tank is 6 feet and height is 2 feet, what is the volume of the tank? Round answer to nearest cubic foot?

2007-11-11 08:17:52 · 4 answers · asked by Anonymous in Engineering

just because they come out with things doersnt mena that they have ever come up with the things they ment too,. so all the things a scienctist looks like, is all the things we have that we atribibute to science,., if a scienctist, cant be seen asa a scientist unless told or by what you notice on him or her, that you see out in public, if a scientist is supposed to where it or what ever, if you dont know all the reasons why, then an object he finds is because he doesnt know you trust scienctist to rule the wolrd, they know someone like me could do a better jobe,. so they expect people who, understand theings like how a person can use a caculator to have a better perspective on science, or do you truly feel that what we know, and what we expect, just becuase we cant be sure, is something that has to happen,., when really if we understanfd things that arein our world there are more than just those theyr are also the ones we carry around with us,.,if scinec leaves us like that then i can

2007-11-11 08:14:53 · 13 answers · asked by Anonymous in Other - Alternative

2007-11-11 08:12:53 · 6 answers · asked by Nicole D 1 in Mathematics

Example: if you rub a comb in ur hair, the comb will always recieve the negative charges and the hair always gives them.

2007-11-11 08:11:55 · 1 answers · asked by Shadowstrike 3 in Physics

2007-11-11 08:10:48 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-11 08:08:22 · 2 answers · asked by lana s 2 in Earth Sciences & Geology

I want to make it very easy with common household objects. Thanks.

2007-11-11 08:07:28 · 2 answers · asked by Anonymous in Chemistry

2007-11-11 08:06:16 · 6 answers · asked by melissadavis_18 2 in Weather

I want to use the sum or difference identity for cosine

2007-11-11 08:05:56 · 4 answers · asked by Tae M 1 in Mathematics

Imagine that the light from a hot, dense object passed through a cool, low density cloud and then through a prism. If the temperature of the hot, dense object were increased slightly, which of the following changes would happen to the resulting spectrum?
a. the lines would move to the blue end of the spectrum
b. More lines would appear at the blue end of the spectrum
c. the lines would move toward the red end of the spectrum
d More lines would appear at the red end of the spectrum
e. the lines in the spectrum would not change.
Why???

2007-11-11 08:05:56 · 4 answers · asked by mickey28 1 in Astronomy & Space

2007-11-11 08:05:18 · 2 answers · asked by Nicole D 1 in Mathematics

2007-11-11 08:05:14 · 8 answers · asked by mmmmm! 1 in Mathematics

Owen has a 3in by 5in photo. he wants to make as large as he can to fit in a 10in by 12.5in ad.

What scale factor will he use?

What will be the new size?

2007-11-11 08:01:41 · 4 answers · asked by gadfgfrsdfer 3 in Mathematics

My first dilution was placing .1711 grams of lead acetate into 10 ml of water.

But then I placed 1ml of the previous solution into 9 ml of water.

The real problem is....I have no idea how to *explain* what I did , quantify it for a report (i.e, explaining I have a 1000x dilution of lead acetate) and show work on how I came to the conclusion I have X times dilution...I've totally blanked on the explanation and other websites only made me more confused....please help.

2007-11-11 07:58:59 · 5 answers · asked by sasazxzxzzx x 1 in Mathematics

Starting from rest, a 12-cm-diameter compact disk takes 3.0 s to reach its operating angular velocity of 2000 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is .

How many revolutions does it make before reaching full speed?

I found the alpha, which is 0.001745
Then I used one of the kinematics equations to find theta, and I converted the radians answer to rev, I got 0.00125 but it's the wrong answer.

Can you provide the answer and how you did it. Thanks

2007-11-11 07:57:54 · 3 answers · asked by dawance88 2 in Physics

That means in class I would have more anxiety or nervousness compared to a normal student when I have to:

- do presentations (this worries me the most)
- raise my hand and ask for a question
- answering a question infront of the class
- group assignments or study buddies; I'd rather work alone.

If I can see the professor privately after class and ask for help, then I would have no problem doing that. Does anyone here sound like me? Did you get your degree and now working for a company? Or did was it so bad that you dropped out of college?

2007-11-11 07:54:48 · 7 answers · asked by Dazed 2 in Engineering

also which is greater 0 or negative 4.

and what is the lcd of this pair of fractions 3 over 25 and 4 over 20.

and can you please solve the proportion of 5 over n = 2 over 3.

2007-11-11 07:54:12 · 14 answers · asked by Anonymous in Mathematics

PROJECT.

2007-11-11 07:54:08 · 2 answers · asked by weather 6 in Geography

1. the sum of two consecutive integers is 28.find the integer.
2.the sum fo an integer and 15 more than the integer is 57. Find the integer.
3.The sum of three consecutive integers is -30.what are the integers?
4.The sides of a triangle are consecutive integers. If the perimeter of the triangle is 240 unites, find the length of each side

2007-11-11 07:53:56 · 5 answers · asked by shelby.sheperd 1 in Mathematics

ok so if an athletic field is build in the shape of a rectangle with X as it's length and the rectangle is capped by a semicircles at both ends with a radius R. the field is bounded by a 400meter track. What value of X and R will give the rectangle the largest possible area?
IM NOT LOOKING FOR AN ANSWER, I JUST NEED TO KNOW HOW TO START THE PROBLEM...

2007-11-11 07:53:37 · 2 answers · asked by broken_monkey08 2 in Mathematics

ok my algebra teacher gave me this word problem to do, and I AM TOTALLY CONFUSED. everything i try doesnt work. someone help:

Every morning, Mike the security guard at CP high school opens all 100 doors in the building. Let's assume the doors are #'d 1-100. The next security guard closes all even numbered doors. The third security guard touches all doors that are multiples of 3. If a door is open, he'll close it and vice versa. The fourth guard changes the position of every fourth door (if it's open he'll close it etc.,) and the fifth guard changes the position of every fifth door and so on, until the 100th guard changes only door 100.

HOW MANY DOORS ARE LEFT OPEN IN THE END?

you also need to explain which doors would be open if the doors went up to 1000. Assume the last guard changes only door #1000.



whew, so that's the problem
someone help!

2007-11-11 07:53:00 · 6 answers · asked by Anonymous in Mathematics

how many people would you execute? Show your work.

2007-11-11 07:52:51 · 4 answers · asked by jiahua448 4 in Mathematics

a 44 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0degrees with the horizontal. The block accelerates to the right at 6.00m/s^2. Determine the coefficient of kinetic friction between the block and the ceiling

2007-11-11 07:49:36 · 1 answers · asked by Anonymous in Physics

2007-11-11 07:49:29 · 3 answers · asked by xannie222x 2 in Weather

I need to build a catapult for class.

I do not want to do it but am trying

the weight of what I have to fling is about the weight of a golf ball,

the catapult has to be under 50x50 cm

and it has to fling it a distance of 8meters

anyone have any help?

I've been trying to use the internet but.. beh

so far the catapult i've made only flings things about a foot.

2007-11-11 07:48:48 · 5 answers · asked by Anonymous in Engineering

Find a value for K that would make the equation linear: y=kIxI+7 (there are absolute value bars infrong of x so its a function right now) thanks.....

2007-11-11 07:45:21 · 5 answers · asked by tennisgrl9294 3 in Mathematics

If you are doing a physics problem - what is wrong with this misconception? Why do people think this?

2007-11-11 07:43:34 · 5 answers · asked by boy101 3 in Physics