Science & Mathematics - 23 September 2007

2007-09-23 14:35:49 · 11 answers · asked by Anonymous in Zoology

2007-09-23 14:34:19 · 20 answers · asked by bumblebee 4 in Biology

You pull with a force of 260 N on a rope that is attached to a block of mass 24 kg, and the block slides across the floor at a constant speed of 1.6 m/s. The rope makes an angle of 25 degrees with the horizontal.

2.)What is the y-component of the force exerted by the Earth on the block?

3.)What is the y-component of the force exerted by the floor on the block (sometimes called the "normal" force, because it is perpendicular to the floor)?

I can get the force of the rope on the block but cant get 2 and 3...any ideas?

2007-09-23 14:33:26 · 2 answers · asked by Anonymous in Physics

2007-09-23 14:32:55 · 1 answers · asked by cheercutie1392 1 in Astronomy & Space

During rodeo events where the bull's tails are pulled to make them fall down. Does it hurt them like a cat?
They don't look like they are in pain.

So is it that their tails are not connected to their spine? And what exactly is it that makes cats scream like crazy when you pull their tail?

2007-09-23 14:32:43 · 3 answers · asked by Anonymous in Biology

where is this problem discontinuous?

2007-09-23 14:30:46 · 5 answers · asked by Connor O 1 in Mathematics

2007-09-23 14:29:08 · 14 answers · asked by Anonymous in Physics

-4/ y= -12/y-4

2007-09-23 14:24:57 · 2 answers · asked by MTak 2 in Mathematics

umm...i looked a lot in my textbook- but i still need help...don't really need a long answer...just something small and accurate...Thanks in advance...!! Please do help!!

2007-09-23 14:23:11 · 4 answers · asked by abbi 3 in Geography

http://www.shopatsky.com/productimages%5Cp0141_m.jpg

is this a real picture or a painting??

2007-09-23 14:23:07 · 12 answers · asked by Anonymous in Astronomy & Space

The seismic waves with the largest amplitudes are called?

Ground motion consists of two things. What are the two things?

A magnitude 5 earthquake realeases _ times as much energy as a magnitude 3 earthquake?

Unconsolidated soil undergoes (MORE OR LESS) ground shaking than solid (consolidated) bedrock.

2007-09-23 14:19:52 · 3 answers · asked by sportman16977 2 in Earth Sciences & Geology

???????

2007-09-23 14:19:25 · 1 answers · asked by Anonymous in Mathematics

Let f be a continuous function such that f(4)<0

2007-09-23 14:19:17 · 3 answers · asked by alawrence108 1 in Mathematics

Some harmless flies resemble bees and wasps. What is this mechanism called? Evaluate its importance as a defense mechanism.

2007-09-23 14:17:59 · 13 answers · asked by Anonymous in Biology

Can you please show me step by step how to do the following equations PLEASE!!!


4(2y - 4) = 5y + 2

-6 - -2n = 3n - (6 + 5)

8(x - 3) + 8 = 5x - 22

2007-09-23 14:17:55 · 18 answers · asked by Carrie R 1 in Mathematics

HUGE library system but there is only 1 book on the subject....and it's not very good. Does anybody have any good websites?

2007-09-23 14:16:32 · 6 answers · asked by Anonymous in Medicine

2007-09-23 14:15:20 · 4 answers · asked by Anonymous in Physics

2007-09-23 14:12:54 · 2 answers · asked by Anonymous in Chemistry

The velocity of a 150 gram ball changes from < 9, -7, 0 > m/s to < 9.2, -7.3, 0 > m/s in 0.04 s, due
to the gravitational attraction of the Earth and to air resistance.

I know net force and change in rate of mementum should be the same...but I don't know how to get either?

Thanks

2007-09-23 14:11:45 · 1 answers · asked by Anonymous in Physics

solve for x where x is a real number.

2007-09-23 14:09:28 · 5 answers · asked by MTak 2 in Mathematics

Hey, I am really into this stuff and I was wondering if any one knew of any vids. I dont want that lame fake stuff, or the orb stuff. I want real scary ones. They dont have to be youtube videos. I want something that'll keep me awake every night, something that'll scare the living hell out of me!!! >:D! Plz send me links!

2007-09-23 14:09:05 · 5 answers · asked by Rob 2 in Paranormal Phenomena

the 2 ecosystems being the meadow int he wilderness and a city park with people.

2007-09-23 14:09:05 · 2 answers · asked by Anonymous in Biology

First of all, what exactly is a niche? Is it where an organism lives its life? Can a habitat include only one niche? Does a species' niche include how the species meets it's needs for food and shelter? Is it true that centipedes and worms under a log can occupy the same habitat but have different niches?

I'M SO CONFUZED!

2007-09-23 14:09:02 · 1 answers · asked by ? 1 in Biology

On a distant planet,the acceleration due to gravity is less than it is on earth.

2007-09-23 14:08:25 · 3 answers · asked by Anonymous in Physics

My schooling in this subject is long forgotten. For example 37% of £270. What buttons do I press in what order? Many thanks.

2007-09-23 14:06:11 · 14 answers · asked by ¸.•*´`*♥Kates ♥ Game11 ¸.•*´`*♥ 5 in Mathematics

A spaceship ferrying workers to Moon Base I takes a straight-line path from the earth to the moon, a distance of 384,000 km. Suppose it accelerates at an acceleration 20.6 m/s^2 for the first time interval 15.7 min of the trip, then travels at constant speed until the last time interval 15.7 min, when it accelerates at -20.6 m/s^2, just coming to rest as it reaches the moon.

What is the maximum speed attained?
What total time is required for the trip?

I have tried so many ways to find the correct answer but i can't seem to do it right....please help

2007-09-23 14:05:28 · 2 answers · asked by sandymandy 1 in Physics

2007-09-23 14:04:48 · 3 answers · asked by darechuk 3 in Physics

Mineral mines are generally located deep underground

2007-09-23 14:03:17 · 2 answers · asked by bammmmmmmmmmmmmm 1 in Earth Sciences & Geology

a car is moving at a constant speed of 14m/s when the driver presses down the pedal for 11 seconds at an acceleration of 1.6m/s2. what is the average speed of the car???

2007-09-23 14:03:06 · 2 answers · asked by Daniela m 2 in Physics

at which point it switches to slowing down with a constant acceleration of magnitude 0.12 m/s for 2.0 minutes. What was the average speed of the train during this time, that is, from starting at rest to the end of the 2.0 minutes of slowing down?


hint: think of it as two separate problems, one for the train speeding up, and one for the train slowing down; then put the two together to answer the question.

2007-09-23 14:00:07 · 1 answers · asked by myname_011 1 in Physics