Science & Mathematics - 29 November 2007

But we can't catch them. Anyone have any ideas? We need to get them and move them to a warmer environment. Please help.

2007-11-29 09:38:17 · 17 answers · asked by Jay Jay 5 in Zoology

I am doing a scavenger hunt for my IPC class, and I cant find these last few questions. If you can help please do!
(for the examples, it would be great if they were easy to find in any house hold!) thanks to anyone who replies!

1) What is an example of a sweet substance containing a covalent bond?
2) What is an example of a substance with the ability to form iron oxide?
3) What is a sample of a Inert gas?

2007-11-29 09:38:02 · 5 answers · asked by Anonymous in Chemistry

A quarterback throws a football toward a re-ceiver with an initial speed of 17 m=s, at an
angle of 37 above the horizontal. At that
instant, the receiver is 17 m from the quarter-
back.
The acceleration of gravity is 9:8 m=s2 :
With what constant speed should the receiver run in order to catch the football at the
level at which it was thrown? Answer in units
of m=s.

2007-11-29 09:35:08 · 1 answers · asked by Jarod S 2 in Physics

I know that a cell phone is partially a GPS and relays a signal from one phone to another but can you determine the location coordinates -- or is that information a closely guarded secret that only the service provider has access to.

2007-11-29 09:35:04 · 5 answers · asked by MrSandman 5 in Engineering

Too many Gators!

2007-11-29 09:34:28 · 6 answers · asked by Florida Fisherman 1 in Zoology

A ball is thrown straight upward and returns
to the thrower's hand after 2 s in the air. A
second ball is thrown at an angle of 37 with
the horizontal.
The acceleration of gravity is 9:8 m=s2 :
At what speed must the second ball be
thrown so that it reaches the same height as
the one thrown vertically? Answer in units of
m=s.

2007-11-29 09:34:22 · 1 answers · asked by Jarod S 2 in Physics

Can someone help.
If the Marginal Distribution of X is
x 0 1 2 3
P(x) 1/6 2/6 2/6 1/6

AND
The Marginal Distribution function of Y is
y 0 1 2
p(y) 1/4 2/4 1/4

Find the correlation coefficient.

2007-11-29 09:34:21 · 2 answers · asked by shikmatic 1 in Mathematics

One of them, of mass 70.0 kg, is moving to the right at 2.00 m/s, while the other, of mass 75.0 kg, is moving to the left at 2.80 m/s.
What are the magnitude of the velocity of these skaters just after they collide?

2007-11-29 09:32:44 · 1 answers · asked by coolredturtle1555 2 in Physics

(please state your resource)... thanks

2007-11-29 09:31:51 · 3 answers · asked by oh so cute 1 in Zoology

Can the total number of distinct Sudoku puzzles be calculated? Any experts in math stat here? How in the world would you calculate this? I was a math major many years ago, but I can't quite figure it out. Please post the solution if you can.

2007-11-29 09:29:21 · 0 answers · asked by Shaun Super 2 in Mathematics

2007-11-29 09:27:18 · 0 answers · asked by joey 2 in Mathematics

1) a runner moving at his speed of 4.5 m/s rounds a curved track with a 64 m radius. what is the runner's centripetal acceleration?
a. 0.07 m/s^2
b. 0.316 m/s^2
c. 288 m/s^2
d. 1296 m/s^2

2) a 58.0 kg skater with a velocity of 16.0 m/s comes into a curve of 24.0 m radius. how much friction must be exerted between the skates and the ice to negotiate the curve?
a. 2088 N
b. 38.7 N
c. 87 N
d. 618.7 N

2007-11-29 09:26:32 · 2 answers · asked by Anonymous in Physics

Here is the question
Find the point where the curves y=x3-3x+4 and y=3(x2-x) are tangent to each other, that is, have a common tangent line.

2007-11-29 09:26:32 · 3 answers · asked by Anonymous in Mathematics

What would this equal?

a x a^2 (the "x" being a multiplication sign)

does it just equal a^2 or is it 2a^2?

2007-11-29 09:26:03 · 8 answers · asked by wild boar 4 in Mathematics

find all integers n so that the equation nx-12=3x has an integer solution for x

the second 1:
find the difference between the sum of the first 2003 even countin numbrs and the sum of the first 2003 odd countin numbers

yay!

2007-11-29 09:24:09 · 2 answers · asked by Hannah J 1 in Mathematics

example: a=v2-v1
---------
delta t

2007-11-29 09:23:23 · 1 answers · asked by Anonymous in Physics

If the following are all planted AT THE SAME TIME, in what order do they ripen enough to be used?

Corn, cucumber, snap pea, peppers, squash, tomatoes, watermelon, cantaloupe, zucchini, carrots celery, horseradish, leeks, onions, parsnip, potatoe, sweet potatoe, pineapple, fennel, coriander, dill, apple, orange, cherry, peach, pear, grapefruit, strawberry, raspberry, coconut, maple, cabbage, kale, dandelion, sunflower.

The climate is semi-tropical, warm, with daily rain, bright sun (little or no shade) the seeds are sprouted and the roots have started putting out filaments when they are transplanted. They are put in a mulch of seaweed (rinsed, no salt) with added plankton and dead fish as fertilizer. (quasi-hydroponic.)

Which ones would you expect would really not grow at all, or would do very poorly? Which ones would do well?

This is for a novel, so my characters are depending on this to save their lives! Please help! I want to have reasonable, realistic details. Thanks!

2007-11-29 09:22:03 · 4 answers · asked by cdf-rom 7 in Agriculture

basically, i want to do work experience in a hospital, but i dont know what one to do. the royal free is closest to me, do they do it?

2007-11-29 09:18:56 · 1 answers · asked by eatmy_goal 2 in Medicine

I wanted to find out the integral of sin(x)/x from negative infinity to infinity so I asked my physics/calculus teacher, who told me that it was equal to pi or pi/2, I can't remember which. Neither of us were able to prove it so I decided to use the fact that rect(f) is the fourier transform of sinc(t) but upon evaluating this at f = 0 I wound up with the answer that the integral is the square root of pi/2 ! Help please?

2007-11-29 09:18:39 · 1 answers · asked by Adrian H 1 in Mathematics

2007-11-29 09:18:30 · 3 answers · asked by Anonymous in Mathematics

Bscally i can show that the best rectangle to get the most area from same perimeter is square.also trying to find one that i can use to apply to all shapes (to decgon wil do) to show that the regular ones get the biggest area for the same perimeter and iv got something below that ur spsd to b able to use on other shapes PLZ SHOW HOW.

(Rectangle)
Perimeter=P let a Length=X Then a width is 1/2(P-2X)

Area= X ((1/2 (P-2X)
= X ( P/2-X)
= PX/2-X^2

HERE IS THE IMPORTANT BIT BELOW PLZ HELP!!!!!!

dA/dx = P/2 - 2x = 0 for max or min <<<<< So 2x = P/2 and x = P/4. - I understand how to get from the above but i dont understand the dA/dx thing

please explain, iv luked at some others and they talk about derivates or something and going from 100-2X to 100X-X^2 + C where C is a constant.

But i dont understand how theyve got to there and how on example earlier they got to that either.

ALL HELP GR8ly APPRECIATED

2007-11-29 09:15:38 · 2 answers · asked by JonI 2 in Mathematics

Bscally i can show that the best rectangle to get the most area from same perimeter is square.also trying to find one that i can use to apply to all shapes (to decgon wil do) to show that the regular ones get the biggest area for the same perimeter and iv got something below that ur spsd to b able to use on other shapes PLZ SHOW HOW.

(Rectangle)
Perimeter=P let a Length=X Then a width is 1/2(P-2X)

Area= X ((1/2 (P-2X)
= X ( P/2-X)
= PX/2-X^2

HERE IS THE IMPORTANT BIT BELOW PLZ HELP!!!!!!

dA/dx = P/2 - 2x = 0 for max or min <<<<< So 2x = P/2 and x = P/4. - I understand how to get from the above but i dont understand the dA/dx thing

please explain, iv luked at some others and they talk about derivates or something and going from 100-2X to 100X-X^2 + C where C is a constant.

But i dont understand how theyve got to there and how on example earlier they got to that either.

ALL HELP GR8ly APPRECIATED

2007-11-29 09:15:18 · 2 answers · asked by JonI 2 in Mathematics

" What number comes next in the pattern" 1000,200,40,8,___"

Please help me!!

2007-11-29 09:14:31 · 7 answers · asked by mini me 2 in Mathematics

http://www.webassign.net/scalcet/5-1-001alt.gif

a = 10
(a) By reading values from the given graph of f, use five
rectangles to find a lower estimate and an upper estimate for the area under the given graph of f from x = 0 to x = 20.

? lower estimate
? upper estimate

(b) Find new estimates using ten rectangles in each case.

? lower estimate
? upper estimate


The speed of a runner increased steadily during the first three seconds of a race. Her speed at half-second intervals is given in the table. Find lower and upper estimates for the distance, d that she traveled during these three seconds.
t(s) 0 0.5 1.0 1.5 2.0 2.5 3.0
v(ft/s) 0 6.7 10.8 15.5 18.8 19.4 20

d=(lower estimate)
d=(upper estimate)

2007-11-29 09:11:10 · 3 answers · asked by Anonymous in Mathematics

Science hw

2007-11-29 09:09:17 · 5 answers · asked by ☼Daisies☼ 2 in Chemistry

2007-11-29 09:08:43 · 1 answers · asked by Anonymous in Astronomy & Space

2007-11-29 09:08:42 · 5 answers · asked by ? 7 in Weather

2007-11-29 09:06:10 · 4 answers · asked by LaurenD 3 in Physics

2007-11-29 09:06:00 · 3 answers · asked by Jay 2 in Mathematics

Find f.
f ''(x) = x^-2
x > 0
f(1) = 0
f(3) = 0

A particle is moving with the given data. Find the position of the particle.
a(t) = t - 4
s(0) = 1
v(0) = 5

Find f.
f ''(x) = 24x^2 + 2x + 2
f(1) = 2
f '(1) = -2

2007-11-29 09:04:28 · 1 answers · asked by ineedhelpbadly 2 in Mathematics