Science & Mathematics - 12 September 2007

I don't quite understand how to do this, so can someone help me with this?

2007-09-12 15:18:51 · 2 answers · asked by Danyizzle 4 in Mathematics

help i dont understand this lesson !

2007-09-12 15:18:11 · 11 answers · asked by Angiee 2 in Mathematics

What is the process and how do i get a solution

2007-09-12 15:17:47 · 3 answers · asked by Eri 1 in Mathematics

2007-09-12 15:16:34 · 9 answers · asked by linda c 1 in Mathematics

Ok, this seems like a simple enough problem, however I have trouble wrapping my mind around physics concepts and trying to set up these problems. Any help will be greatly appreciated. Here is how the problem reads:

Two identical pellet guns are fired simultaneously from the edge of a cliff. These guns impart and initial speed of 30.0 m/s to each pellet. Gun A is fired straight upward, with the pellet going up and then falling back down, eventually hitting the ground beneath the cliff. Gun B is fired straight downward. In the absence of air resistance, how long after pellet B hits the ground does pellet A hit the ground?

As much detail as you can include will help me greatly. I have quite a few of these problems to work and hope I can use this as an example. Thanks again to anyone who tries this.

2007-09-12 15:16:34 · 1 answers · asked by doubtful 2 in Physics

In coming to a stop, a car leaves skid marks 92 m long on the highway. Assuming a deceleration of 7.00 m/s^2, estimate the speed of the car just before braking.

Walkthrough please; I need to know how to do these not just the answer.

2007-09-12 15:16:20 · 2 answers · asked by ? 2 in Physics

2007-09-12 15:14:14 · 10 answers · asked by hanna 1 in Mathematics

I'm in 11th grade now and I'm considering a career in biology.

Do you know any biology related career which will make quite a lot of money? (My parents want me to get a nice job with enough salary)

And what country is the best place to study that subject? Please give me the school names too.

Thanks! Any advice will be greatly appreciated...

2007-09-12 15:13:50 · 2 answers · asked by Anonymous in Biology

What do you think about the amateur scientist that found that it was possible to burn salt water. Do you think that there will be some government limitations on salt water? Or that machine will never come to reality because of some kind of restrictions. Is burning saltwater even possible without a additive. Or is this the holy grail in alternative energy?

2007-09-12 15:12:36 · 4 answers · asked by Ollie Williams 2 in Physics

2007-09-12 15:10:52 · 13 answers · asked by Anonymous in Chemistry

1. Consider the polynomials of the form x^2+bx+C, where b and c are integers in the interval (xabs(-10
2. Describe how you solved the problem. Even include thought processes that didn't work.

2007-09-12 15:10:43 · 2 answers · asked by spencer m 1 in Mathematics

please i neeed to know. thts not in the morning 5 or 6 o lcock but in the afternoon. please help meeeeeeeee

2007-09-12 15:09:17 · 5 answers · asked by Anonymous in Geography

"Cube A has a volume of 2cm x 2cm x 2cm. What is its density?" How can you find the density of the block with only knowing the volume?

2007-09-12 15:09:15 · 2 answers · asked by Lynn 2 in Physics

My husband wanted to know

2007-09-12 15:08:21 · 4 answers · asked by Anonymous in Astronomy & Space

how do u change 1.99945 to scientific notation WITH ONLY 3 significant figures?

2007-09-12 15:08:18 · 1 answers · asked by goofygoober 2 in Chemistry

I am running a 180 watt electric motor (e-bike conversion kit) via a 36 V 10 amp hour lithium ion battery. Can anyone give me advice on setting up a solor powered system to most effectively charge the battery?

2007-09-12 15:08:17 · 4 answers · asked by anton t 1 in Engineering

Killer Bees have been found in New Orleans are they can they be fatal for humans when they attack??

2007-09-12 15:07:10 · 3 answers · asked by Cynthia N 1 in Zoology

2007-09-12 15:06:28 · 6 answers · asked by motoson 4 in Chemistry

For instance, if i put a wet book in the microwave, could I expect it to dry?

2007-09-12 15:06:11 · 7 answers · asked by Anonymous in Engineering

I'd like to determine whether UFO and Alien phenomena were witnessed prior to the 1940's, before people had a concept of calling it 'Alien'. I mean, if we didn't have sci-fi, would we still have these sightings and if we did what would we be calling it - ghosts?

2007-09-12 15:05:57 · 10 answers · asked by mima... 4 in Other - Alternative

is there a formula or something?

2007-09-12 15:05:16 · 9 answers · asked by Anonymous in Mathematics

2. An automobile traveling along a straight road increases its speed from 30.0 m/s to 50.0 m/s in a distance of 180 m. If the acceleration is constant, how much time elapses while the auto moves this distance?

2007-09-12 15:02:07 · 4 answers · asked by Anonymous in Physics

rid of them.....

2007-09-12 15:00:49 · 7 answers · asked by chaos3eleven 1 in Zoology

Thanks

2007-09-12 15:00:07 · 4 answers · asked by n 7 2 in Mathematics

Why is it that so many people cannot accept that which is not easily explainable..or is it that so many people DO lie? Others thought I should be using this "ability" I have with cards to enrich myself when all I wanted was to get input from sensible people that may know, from a scientific or metaphysical perspective, what could be happening. I have to say it is rather dissapointing and no doubt even this posting will get flippant or derisive answers. Where are all the SERIOUS people please? Thanks...................

2007-09-12 14:58:53 · 14 answers · asked by Richard H 1 in Parapsychology

it says solve by graphing. Check your solution..well I know I gotta do the graphing part..but someone help me on showing the work plz

2007-09-12 14:55:14 · 3 answers · asked by Anonymous in Mathematics

Should we pass our organs to someone else when we are done with them?

What say you?

2007-09-12 14:52:18 · 3 answers · asked by ccruns 2 in Biology

what problems might result if a country uses both systems of measurement?

2007-09-12 14:48:29 · 10 answers · asked by Anonymous in Biology

I also would like to know what year it was launched and what the name of the spacecraft is

2007-09-12 14:47:24 · 5 answers · asked by 소미 1 in Astronomy & Space

physics... why can an object accelerate at a constant speed, but not at a constant velocity?

2007-09-12 14:42:25 · 4 answers · asked by theawesomenessofhannah 1 in Physics