Science & Mathematics - 4 September 2007

2007-09-04 15:27:51 · 3 answers · asked by Anonymous in Mathematics

A ball is kicked from a location < 6, 0, -7 > (on the ground) with initial velocity < -9, 19, -4 > m/s. The ball's speed is low enough that air resistance is negligible.

What is the velocity of the ball 0.4 seconds after being kicked? (Use the Momentum Principle!)

I've got the x and z velocity's they are simple.

I would like an example of how to work this out, but if you feel giving me an answer is cheating I'll happily take info on how to use the momentum principal.

2007-09-04 15:22:30 · 2 answers · asked by Anonymous in Physics

f(θ)=sin(θ-5)/cosθcos5

2007-09-04 15:22:18 · 1 answers · asked by ilovecoach 3 in Mathematics

Please answer the below geographical questions. If you don't know all of them, just include the ones you know.
1. What is the largest river, by volume, in the United States?
2. What is the name of the river that forms a border between Mexico and the United States?
3. What river runs east from Lake Ontario to the Atlantic Ocean?
4. What river forms part of the border between two northwestern states and flows into the Pacific Ocean?
5. What is the huge expanse of flatlands between the Rocky Mountains and the Mississippi River?
6. What extensive flatlands cover most of Nevada and are nearly surrounded by mountains?
7. What flatlands circle the northern and western coastline of the Gulf of Mexico?
8. What flatlands in California lie between the Sierra Nevada and the Coast Range?
9. What is the main mountain chain that runs through the eastern United States?
10. What is the first mountain range west of the Great Plains?
11. What is the mountain range that seperates California and Nevada?
12. What is the tallest mountain in Alaska?
13. Whats the tallest mountain range in Oregon and Wash.

2007-09-04 15:14:50 · 10 answers · asked by YAHOO 2 in Geography

Yeah, I stepped on a bee once while near a nest. Those bees didn't give me one single problem until I stepped on that single bee and all hell broke loose. All the bees came flying out the nest after me. " I escaped with my hide in my teeth!"

2007-09-04 15:13:57 · 2 answers · asked by Anonymous in Zoology

2007-09-04 15:10:51 · 12 answers · asked by john r 1 in Physics

thanks.

2007-09-04 15:08:46 · 3 answers · asked by Deesa 2 in Mathematics

2007-09-04 15:06:24 · 3 answers · asked by Anonymous in Biology

2007-09-04 15:06:01 · 4 answers · asked by I am not ok 2 in Other - Science

2007-09-04 15:04:43 · 6 answers · asked by Anonymous in Biology

2007-09-04 15:04:04 · 15 answers · asked by hello 3 in Astronomy & Space

2007-09-04 15:03:58 · 10 answers · asked by charlesdclimer 5 in Astronomy & Space

2007-09-04 15:03:35 · 3 answers · asked by CHIP D 1 in Biology

simplify: (2x^3/4 + y^-1/2)(2x^3/4 - y^-1/2)

2007-09-04 15:03:10 · 2 answers · asked by mandy 1 in Mathematics

2007-09-04 15:00:51 · 2 answers · asked by alawrence108 1 in Mathematics

Using the number 1,2,3, and 4 make a equation that equals 89 and 90. You can add, subtract, multiply, divide, square, square root or combine two numbers together. Ex. 1 and 2 becomes 12.

2007-09-04 15:00:46 · 1 answers · asked by kingjamesholdscourt23 2 in Mathematics

I've often taken measurements without it connected. When first starting out with scopes I tried to connect it to an arbitrary point in the circuit to measure the voltage potential between two points (as one would do with a voltmeter) and found this did not work. Why's it there? When is it needed? When isn't it needed?

2007-09-04 15:00:35 · 4 answers · asked by John 1 in Engineering

2007-09-04 14:59:59 · 9 answers · asked by eyepopping hideous female troll 4 in Zoology

I read that it disconnected the input signal from the oscilloscope and draws a horizontal line at 0V. Why would I want to do that?

2007-09-04 14:58:56 · 1 answers · asked by John 1 in Engineering

2i^2 - 3i + 4i^3 / 2i^5 - 3i - 2i^2

2007-09-04 14:58:39 · 3 answers · asked by argentina_mandy20 1 in Mathematics

How can the universe NEVER ever stop? If it truly is infinate, then doesn't there HAVE to be other complex life forms out there, most likely more complex then humans? What is a black hole and how does it work? If space is matterless, what makes it black? Any space related information would be greatly appreciated.

2007-09-04 14:57:06 · 5 answers · asked by dcmattco 2 in Astronomy & Space

I need to know about the possible treatments for Irritable bowel syndrome. As much relevant information as possible.
An important note though, I do not have nor believe to have this disease. I am recollecting information for a presentation/homework.

2007-09-04 14:54:03 · 4 answers · asked by cactuar2k 3 in Medicine

evaluate g[f(2)] and f[g(-3)] for each pair of functions

f(x)=3x, g(x)=-x+1



i know the answer is -5 and 12, but please does anyone know howw to solve this? i dont get functions at all. thankss

2007-09-04 14:51:22 · 7 answers · asked by nikijoe46 3 in Mathematics

send it to me e-mail @ burntcrackerofmeangreens@yahoo.com. can't have a black background. or just write me telling where to find it i need it to be the pictures of the elements of the table not the table

2007-09-04 14:50:02 · 1 answers · asked by dalyn 1 in Chemistry

I'm on limits and I need some help.

Question is... Determine the Infinite Limit(so say if it's positive infinity or negative infinity).

lim of cot x as x gets close to pi.

I know you use pi/6, pi/4, pi/3, pi/2, 2pi/3, and 3pi/4 and plug that in for x, but I'm a little confused on how to do that. Do I just use 2nd tan on the calculator and plug in the pi/6, pi/4, etc? I heard second tan on a calc isn't cotangent.... help!

2007-09-04 14:46:27 · 5 answers · asked by orbit 2 in Mathematics

A spaceship travelled at a uniform velocity of 3.2 x 10^4 km/h for 2.7 days. What was the displacement of the spaceship?

2007-09-04 14:44:44 · 1 answers · asked by Anonymous in Physics

im confused. this is geometry..

2007-09-04 14:42:47 · 5 answers · asked by Anonymous in Mathematics

Thank you

2007-09-04 14:42:15 · 5 answers · asked by jumba 1 in Physics

The radioactive element iodine-131 is commonly used in treating medical problems. It has a half-life of 8.1 days. How long does it take for 99% of a sample of iodine-131 to decay? Give both an exact answer and an approximation correct to three decimal places.

2007-09-04 14:42:01 · 2 answers · asked by Ask or Answer 2 in Chemistry

2007-09-04 14:40:22 · 5 answers · asked by *:+:♥PebbleZ♥:+:* 2 in Mathematics