Science & Mathematics - 5 August 2007

Like the one that will be strong enough to let me enjoy the Northern Lights in Belgium?

2007-08-05 08:28:45 · 3 answers · asked by Part Time Cynic 7 in Astronomy & Space

possible answers to choose from....

a. 1/15
b. -1/10
c. -4/15
d. -13/30
e. -3/5
f. -23/30
g. -14/15
h. none of these

2007-08-05 08:27:00 · 2 answers · asked by Olivia 4 in Mathematics

The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 time the length of the base. If the perimeter is 29 cm find the lenght of one of the eqaul legs.

Would I start with 4x-8=29

and woul the answer be 4,5,11 or 12cm???

2007-08-05 08:26:01 · 4 answers · asked by marianne d 2 in Mathematics

earnshows theorem says that no particle can b in stable equilibrium under the action of electrostatic force alone. consider ,however, a positive point charge at the center of a square of four equal positive charges ,this point charge seems to b in stable equilibrium as all the four charges push it towards the center ,yet earnshows theorem holds,,, can u explain how?

2007-08-05 08:25:23 · 3 answers · asked by Anonymous in Physics

any good reference with animations would be of great help.
Thanks.

2007-08-05 08:19:13 · 5 answers · asked by Pure_Blue_Poison 2 in Physics

For the force field F(x,y,z)=(ze^x cos y) i - (ze^x sin y) j + (e^x cos y) k, calculate the work done by F on an object moving along a curve from (0, 0, 0) to (2, π/2, 1)


these were the possible answers given....

-2
-2 - 4e^2
0
-2e
-3e^2
-4e^2

2007-08-05 08:16:43 · 1 answers · asked by Doug 2 in Mathematics

An open top rectangular box has a volume of 729/2 cubic feet. If the dimensions are calculated so as to minimize the outside surface area (bottom and four sides), then the height of the box will be how many feet?.

possible answers....

1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
or is it none of these

2007-08-05 08:10:07 · 3 answers · asked by Olivia 4 in Mathematics

Like in the movie Junior, they inserted a fertilized egg into the man's abdomen and then the guy takes a drug to keep the pregnancy going? Do you think science will ever make it possible for this to happen in real life?

If so, how many of you men would actually do this?

2007-08-05 08:10:07 · 11 answers · asked by Anonymous in Other - Science

Supposedly this riddle is world-wide known as "unsolveable". The object is to find out why the hotel owners profit is one dollar short. HERE WE GO.........There was a hotel owner who charged his 3 of his guests $10 each for each to stay at the hotel for one night. From that he earned $30 dollars. He gave the bellboy $5 out of the $30 he collected from the guests and told the bellboy to keep $2 dollars for himself and to give each guest back $1 dollar. So now the 3 guests are being charged $9 each. So you take the $9 x 3 guests that equals $27 dollars plus the bellboys $2 ......... that equals $29. Where did the other dollar go???

2007-08-05 08:05:00 · 8 answers · asked by Anonymous in Mathematics

2007-08-05 08:03:11 · 9 answers · asked by Silly Boy 1 in Mathematics

possible equations.....

x + 2y + 3z = 6
4x + y + 6z = 21
x + 3y + 2z = 11
3x + y + z = 14
4x + 4y + 3z = 19
3x + 4y + 3z = 14
or is it none of these?

2007-08-05 08:03:04 · 2 answers · asked by Anonymous in Mathematics

I have tried working this problem myself but I'm stuck. I hope someone can help. Thank you

The length of a rectangle is 3 cm more than 4 times its width. If the area of the rectangle is 85 cm2, find the dimensions of the rectangle to the nearest thousandth.

2007-08-05 07:59:53 · 7 answers · asked by Jacqueline E 2 in Mathematics

I have seen about 10 different zoos and I know there are other great ones--but ours is pretty darn good. no competition--just wanted you to know---what is yours?

2007-08-05 07:59:38 · 6 answers · asked by surfariohio 1 in Zoology

How could you find a point in the x-y plane where the function listed has a local minimum.

f(x, y) = 4x^2 + 3xy + 5y^2 + x + y + 1

If there is such a point but it is not listed, choose answer I. If there is none, answer J.


these are the solutions to choose from in the back of the book...

a. (-9/79, -7/79)
b. (-2/19, -3/38)
c. (-7/71, -5/71)
d. (-3/32, -1/16)
e. (-1/11, -3/55)
f. (-1/11, -1/22)
g. (-3/31, -1/31)
h. (-1/8, 0)
i. There is a local minimum but it is not listed.
j. There is no local minimum for this surface.

2007-08-05 07:55:24 · 3 answers · asked by Olivia 4 in Mathematics

2007-08-05 07:45:38 · 3 answers · asked by Anonymous in Mathematics

Give reasons. I am not. I studied sharks for 13 week for school.

2007-08-05 07:45:31 · 7 answers · asked by you wish you knew! 2 in Other - Science

2007-08-05 07:44:45 · 7 answers · asked by Anonymous in Chemistry

Technical answers only please.

2007-08-05 07:44:06 · 5 answers · asked by a.X.n 1 in Physics

Acme Power has an order for 6800 emergency power plants that can be produced at Acme's plant in Lincoln, Nebraska or at its plant in Tucson, Arizona. If L is the number of units produced in Lincoln and T is the number of units produced in Tucson, find the number of units that should be produced at the Lincoln plant to minimize the total cost if the cost function in dollars is given by C= 0.25L^2 + 0.3T^2 + 16L + 160T.

a. 1460
b. 1960
c. 2040
d. 2460
e. 2640
f. 2960
g. 3240
h. 3840
or is it none of these?

2007-08-05 07:37:10 · 3 answers · asked by Olivia 4 in Mathematics

If the law of conservation is true, then when a cavitation void is forced to form, does surface tension pull free electrons until a state of equilibrium is achieved? Furthermore upon collapse of said void does Boyle's law play a factor? No posers please.

2007-08-05 07:29:24 · 2 answers · asked by high_speed_sly 2 in Physics

The answer to what a black hole is all about can be found right here on earth. We have all seen a whirpool in a tidal current. If one were to be sucked into that whirlpool without proper scuba one would die and be displaced in another part of the ocean ( maybe 20' feet away ) but in any event displaced. A black hole is the same principle, but on a larger scale. A human entering a black hole with the proper equipment ( something like scuba? or a spacecraft? ) will be displaced on the other side of the universe. Very simple to figure out. Comments?

2007-08-05 07:26:32 · 7 answers · asked by Cergio S 2 in Astronomy & Space

2007-08-05 07:24:35 · 7 answers · asked by Anonymous in Zoology

2007-08-05 07:20:16 · 6 answers · asked by pay it forward 1 in Physics

2007-08-05 07:20:08 · 4 answers · asked by Anonymous in Mathematics

Find the velocity vector, V(t), evaluated at t= 1, of a particle that moves along the curve C given by the vector-valued function r(t)= <4t, -5t^2, 3t^3> V(1) =

it could be one of the following....
<4, -6, 15>
<3, -8, 15>
<5, -6, 12>
<4, -10, 9>
<3, -10, 12>
<5, -8, 9>
or none of these

2007-08-05 07:13:44 · 2 answers · asked by Jake 1 in Mathematics

how are they any difrent from a regular foot

2007-08-05 07:12:01 · 14 answers · asked by Anonymous in Mathematics

I (x) = 2x +3

state the domain

thak you

2007-08-05 07:11:31 · 2 answers · asked by quepid622 1 in Mathematics

In the animal world promiscuity is a way of life, while in society it often has devastating consequences. Since the animal kingdom appears to be functioning in perfect harmony, I am wondering if this prolem affects animals at all. If not, then why not?

2007-08-05 07:08:02 · 9 answers · asked by sehling99 2 in Zoology

Solve For Θ

0 ≤ Θ < 360

2007-08-05 07:04:34 · 5 answers · asked by Bobby 1 in Mathematics

possible sets of parametric equations to choose from....

a. x = 2 + t, y = 1 + 3t, z = 3 - 2t
b. x = 2 + t, y = 1 + 4t, z = 3 - 2t
c. x = 2 + 2t, y = 1 + 3t, z = 3 - 2t
d. x = 2 + t, y = 1 + 4t, z = 3 - t
e. x = 2 + t, y = 1 + t, z = 3 + t
f. x = 2 + 2t, y = 1 + 4t, z = 3 + 3t
g. none of these

2007-08-05 07:03:47 · 2 answers · asked by Ed 1 in Mathematics