Science & Mathematics - 29 October 2007

Just a little test on your psychic skills.
The first thoughts that come to you.
my age
type of person I am
description of me.

hmmm

2007-10-29 16:18:57 · 15 answers · asked by Anonymous in Parapsychology

I've seen foxes and wolves and even cats eat live (and of course, uncooked) chickens...why don't they get sick? Or do they?

2007-10-29 16:17:30 · 7 answers · asked by Anonymous in Zoology

If so, with what can I lubricate it with? Would high temp. grease work?

2007-10-29 16:17:04 · 3 answers · asked by jetengine767 3 in Engineering

I need to find the surface area and the volume but I dont know the height the radus is 7 and the slant height is 25

2007-10-29 16:16:07 · 7 answers · asked by Lavonna w 1 in Mathematics

2007-10-29 16:13:22 · 4 answers · asked by Anonymous in Astronomy & Space

answer only if you know

2007-10-29 16:12:06 · 6 answers · asked by Anonymous in Geography

2007-10-29 16:11:16 · 6 answers · asked by Anonymous in Biology

Say i have a telephone, i want to automate pressing keys and also pickup the cradle, how do i automate them using a circuit connected to the pc and if i send signals it should pickup the cradle or press buttons, how do i achieve this?

2007-10-29 16:08:32 · 1 answers · asked by Ramanathan k 1 in Engineering

2007-10-29 16:08:08 · 6 answers · asked by grayskies 2 in Earth Sciences & Geology

find the percent increase or decrease

9 to 5

2007-10-29 16:05:49 · 7 answers · asked by Anonymous in Mathematics

it would be very cool if it was just a strait list list-no sections like the bones in the head or bones in a hand just a strait list
plz & ty :)

2007-10-29 16:05:41 · 8 answers · asked by SchoolKid101 2 in Biology

I don't see where the x^2 in the denom has gone.
x+1/14x^4-5/(x^3-3x^2)

They say the LCD is 14x^4(x-3)
but where has the x^2 'gone'?

2007-10-29 16:04:47 · 1 answers · asked by c0cky 5 in Mathematics

a) 1.00 molar mass Ca
b) 1.00 molar mass Fe

*can someone tell me how to get the answer?

2007-10-29 16:03:22 · 4 answers · asked by Anonymous in Chemistry

2007-10-29 15:58:50 · 2 answers · asked by Anonymous in Astronomy & Space

I need to know specifics on how Sputnik helped us under stand what was out in space. I need to know who's idea was it to launch it and why. How did Sputnik get us to the moon? What did Sputnik look like? When was Sputnik launched and when did it stop working? How did we modify Sputnik from the first launch to the second? Please site your sources!

2007-10-29 15:58:14 · 5 answers · asked by Anonymous in Astronomy & Space

Let's say an integer n satisfies φ(n) = 1000. What are all the primes that might possibly divide n?

2007-10-29 15:55:39 · 2 answers · asked by 3545 2 in Mathematics

2007-10-29 15:55:26 · 7 answers · asked by Anonymous in Astronomy & Space

Just want to know. please help

2007-10-29 15:55:05 · 10 answers · asked by Anonymous in Chemistry

3x^3 - 15x^2 + 18x

Russian Peasant method doesn't work...

with the quadratic formula i get...
(15 +/- 3) divided by 6

but the problem asks me to factor.. not solve.. and plus it cannot be solved since the original problem did not equal anything

any ideas?

2007-10-29 15:49:51 · 10 answers · asked by Mr.Deeds 5 in Mathematics

Hi there,
I'm struggling with trying to find the zeros of the following;
x^4+25x^2+144
x^4-8x^3+17x^2-8x+16

Any help would be greatly appreciated. Thanks!

2007-10-29 15:49:21 · 2 answers · asked by Quasar 2 in Mathematics

23) There are some ‘moons’ that are larger than some ‘planets’. What is the basic difference between a moon and a planet?

A) A planet is a large body that orbits a star, and a moon is a small body that orbits a star.

B) A planet is a large body that orbits a star, and a moon is any body that orbits a planet.

C) A planet is anybody that orbits a star, and a moon is a small body that orbits a planet.

D) The difference is based on chemical composition of the body

which is it?

2007-10-29 15:46:24 · 6 answers · asked by Jfadsl L 1 in Astronomy & Space

I think it has something to do with ^3 radical 64 ^2.

2007-10-29 15:44:59 · 6 answers · asked by Anonymous in Mathematics

test are 60% and quizes are 40% of total grade
tests 95 and 57
quizes 100 and 50

what is the lowest i can make on my next test to still be passing or am i already failing?

2007-10-29 15:44:48 · 4 answers · asked by Anonymous in Mathematics

be specific...

2007-10-29 15:43:35 · 3 answers · asked by Anonymous in Physics

There are two blocks hanging on a pulley attached by a cord. One block has a mass M = 500 g, the other has mass m = 460 g, and the pulley, which is mounted in horizontal frictionless bearings, has a radius of 5.00 cm. When released from rest, the heavier block falls 75.0 cm in 5.00 s (without the cord slipping on the pulley).

(a) What is the magnitude of the blocks’ acceleration?

What is the tension in the part of the cord that supports (b) the heavier block, and (c) the lighter block?

(d) What is the magnitude of the pulley’s rotational acceleration?

(e) What is its rotational inertia?

Explain your work. Thanks :)

2007-10-29 15:37:37 · 1 answers · asked by Anonymous in Physics

Which one of the following would have the most momentum- a charging elephant, a jumbo jet sitting on the runway, or a baseball traveling at 100 km/h? Explain.

2007-10-29 15:36:38 · 10 answers · asked by fabulous! 1 in Physics

If the distance from B to C was then found to be 89.5 ft, the angle DAE was......?

2007-10-29 15:36:14 · 1 answers · asked by Chopper 2 in Engineering

Solve:

x^2-4x=0
3x^2-21x+36=0
x^2+1=-8

SOLVE BY COMPLETING THE SQUARE:

x^2-4x+3=0
x^2-6x+25=0

2007-10-29 15:35:14 · 4 answers · asked by Anonymous in Mathematics

somewhere along the line I vaguely remember being told that the earth makes a loud roaring sound as it spins. Was this something I dreamed up, or what?

2007-10-29 15:33:52 · 11 answers · asked by Anonymous in Astronomy & Space

Hey… We were given this problem in class and I am having a difficult time solving/ understanding the question. I tried finding the resultant vector and then proceeding from there but then I got all sorts of awkward answers….

Here’s what I tried to find the magnitude:
√((Magnitude)cos (angle) + (Magnitude2) cos(angle2 ) + (Magnitude)sin (angle) + (Magnitude2) sin(angle2 ))

I then used tan to find the angles but this I believe was incorrect. Could someone perhaps attempt the problem and explain/ show how to do it? Thanks a bunch for your help:)

Here’s the problem:
A bus weighing 6,075 pounds exerts a force of 5,385 pounds on a hill where it is parked. What angle does the hill make with the horizontal? What force must be exerted by the brakes to prevent the bus from rolling down the hill?

2007-10-29 15:33:22 · 2 answers · asked by Anonymous in Mathematics