Science & Mathematics - 12 October 2006

I was just watching NASA unoffical video. They talked about fuel and how much it costs to send something into space. And I thought, hell... midgets don;t weight much.. less fuel.. and they can do the same work as a normal person in space..

2006-10-12 09:46:31 · 5 answers · asked by stewart_pittman 2 in Astronomy & Space

2006-10-12 09:45:41 · 7 answers · asked by George P 1 in Engineering

2006-10-12 09:45:25 · 8 answers · asked by water yu 3 in Physics

A submarine of mass 2.2X10^6 kg and initially at rest fires a torpedo of mass 260 kg. The torpedo has an initial speed of 100.6 m/s. What is the initial recoil speed of the submarine? Neglect the drag force of the water.

2006-10-12 09:41:49 · 4 answers · asked by nt 2 in Physics

O.k. You see your friend Jessica and she has a bag with 100 pices of candy.You See you friend Lilly She has a bag with 624 pices of candy. You have a bag with 6,895 pices of candy.Your mom gives you and all your friends 543 pices of candy each. How many pices of candy do you and all your friends together?

2006-10-12 09:39:32 · 19 answers · asked by big brat 1 in Mathematics

2006-10-12 09:33:40 · 16 answers · asked by rhonda b 1 in Mathematics

A 2.0 kg ball swings in a vertical circle on the end of an 80-cm-long string. The tension in the string is 20 N when its angle from the highest point on the circle is theta =30 degrees?What is the ball's speed when theta =30 degrees? What is the ball's magnitude of acceleration at theta =30 degrees?

2006-10-12 09:26:36 · 3 answers · asked by Bryan C 2 in Physics

Recently my girlfriend tried to kill herself by slitting her wrists, she was saved luckily. But, when she got to the hospital a blood test revealed Cocaine, Anphetamines, and Canibus in her blood. For some strange reason when she told me that she didnt take any of them I belived her something tells me she is telling the truth. Now her parents think I have been slipping her drugs, I just want to prove to them that she must have gotten a false positive, and I am having a hair test done on me to show that I am not on any then how could she because we share a lot together. These are the medications she takes:

Medicine:
Depakote
Prozac
Ambian
Ibuprofen
-------------
Activities

We are sexually active together
Could she hav gotten it from kissing j/w

Please cite your sources if any I want to show that she is inocent please also only show stuff that is relevant no advice or opions I need facts so I can help her I know that she is telling the truth.

2006-10-12 09:24:40 · 10 answers · asked by n.hendrick 1 in Medicine

2006-10-12 09:20:25 · 16 answers · asked by JULIE D 1 in Mathematics

2006-10-12 09:19:13 · 40 answers · asked by charlie a 2 in Biology

how are imperfect and perfect plants different? wat parts do they have that each other doesn't? Hows it affect reproduction?

2006-10-12 09:17:12 · 5 answers · asked by Samantha Avansworth 2 in Botany

IF EVOLUTION HAS OCCURRED, THE FOSSIL RECORD SHOULD CLEARLY SHOW INTERMEDIATE STAGES IN THE DEVELOPMENT OF DISTINCT, ANATOMICAL FEATURES. SUCH AS PARTIALLY DEVELOPED:- BONES, SHELLS OF SNAILS & SHELLFISH ETC. AS BILLIONS OF CREATURES WITH INTERMEDIATE FEATURES WOULD HAVE LIVED AND DIED IN THE MILLIONS OF YEARS REQUIRED FOR THESE STRUCTURES TO BE ACQUIRED AND PERFECTED, SUCH FOSSILS SHOULD BE EXTREMELY ABUNDANT. PARTICULARLY IF CREATURES WITH HARD PARTS EVOLVED FROM SOFT-BODIED CREATURES, THEN THE GRADUAL ACQUISITION OF HARD PARTS BY SOFT-BODIED CREATURES SHOULD BE ABUNDANTLY DOCUMENTED IN THE FOSSIL RECORD. ESPECIALLY AS THESE HARD PARTS, SUCH AS SHELLS AND BONES ARE SO EASILY AND FREQUENTLY PRESERVED AS FOSSILS.

SO WHERE CAN I SEE SUCH FOSSILS?

2006-10-12 09:15:04 · 6 answers · asked by A.M.D.G 6 in Other - Science

2006-10-12 09:07:56 · 8 answers · asked by Anonymous in Mathematics

can you bloat?

2006-10-12 09:07:35 · 5 answers · asked by Anonymous in Medicine

2 -------- something and something makes ---------------1
you can use + - x /(divide)

8---------- ----------------19

3.5------ ----------------5.5

10------- ------------------25
PLEASE HELP NEED FOR TOMORROW

2006-10-12 09:01:01 · 9 answers · asked by bluenose123 2 in Mathematics

One hour later a second bus leaves the same station, traveling
east at a rate of 48 mi/h. At what time will the two buses be 274 mi apart?

2006-10-12 09:00:23 · 5 answers · asked by Nikitty 2 in Mathematics

Find the acceleration reached by each of the two objects attached by pulleys. One, 7.00 kg, is on an inclined plane of 37 degrees and the other, 12 kg, is hanging freely off the side. The coefficient of kinetic friction between the 7.00 kg object and the plane is 0.300.

I have tried this two different ways.
First:
m2gsinΘ -ukm2gcosΘ - T = m2a
T - m1g = m1a
I found T, and set the two equations equal to eachother and found
a = (m2gsinΘ - ukm2gcosΘ - m1g) / (m1 + m2).
After plugging everything in I found a = -4.882 m/s2 but this is the wrong answer.

Second try:
For 12kg object
m1g - T = m1a
(12)(9.8) - T = 12a
T = 117.6 -12a
For 7kg object
the frictional force
f = μ N = μ mg cos 37 =16.4359 N
T = f + m2g + m2a
T = 16.436 + (7)(9.8) + 7a = 117.6 - 12a
19a = 117.6 -85.036
a = 1.714
This answer is still wrong. Where did I go wrong?

2006-10-12 08:59:36 · 1 answers · asked by terpjenrose 1 in Physics

2006-10-12 08:57:59 · 20 answers · asked by p43x45 1 in Astronomy & Space

A 1600 kg car starts from rest and drives around a flat 40.0 m-diameter circular track. The forward force provided by the car's drive wheels is a constant 1000 N.What are the magnitude of the car's acceleration at t= 10.0 s?If the car has rubber tires and the track is concrete, at what time does the car begin to slide out of the circle?( assume the coefficient of static friction to be 0.8)

2006-10-12 08:55:33 · 1 answers · asked by Bryan C 2 in Physics

i was reading in my local paper, a piece about obesity, it would seem that the whole of Europe, is undergoing an increase in obesity, take that into consideration, along with wetter winters and hotter than usual summers, freak storms and global warming, are these elements all the cause of mankind, or are we being manipulated by unknown extra-terrestrial forces, ready for "harvesting"????????

2006-10-12 08:53:54 · 14 answers · asked by chris s 3 in Astronomy & Space

If someones DNA is on file, and in between crimes they had an accident and needed a blood transfusion, if they then went out to commit another crime, would the evidence point to the criminal or the Blood Donors?

2006-10-12 08:53:45 · 11 answers · asked by Anonymous in Biology

three men rent a hotel room cost $30.They put in $10 each and go to thier room.The desk clerk realizes they overpaid by $5 so he gives the busboy $5 to return to the men, the busboy dosent know how to distribute the money evenly so he pockets $2 and gives each man $1. Each man has now paid $9 each 3x9=27 plus the $2 the busboy has only equals $29,Where did the other dollar go?

2006-10-12 08:51:03 · 7 answers · asked by smart guy? 1 in Mathematics

A student prepared a BUchner funnel apparatus using the fight size filter paper, rinsed the filter paper with water and next piured in a hexane solution with crystals of product he synthesized during the lab, Criticize this technique (note the compound of interest we try to extract is acetanilide.)

2006-10-12 08:50:33 · 2 answers · asked by Anonymous in Chemistry

This includes and kind of cells being cloned...embryotic or adult. I've read that "cloning" has been banned worldwide and typically this means "cloning for humans"; however, specifics concerning cloning for stem cells I've had diffuculty finding...any sources included is greatly appreciated

2006-10-12 08:50:18 · 8 answers · asked by C K 3 in Biology

2006-10-12 08:46:36 · 6 answers · asked by Anonymous in Weather

Is there a term for this?

2006-10-12 08:44:35 · 16 answers · asked by etherialdowntime024 2 in Astronomy & Space

Please give a reason

2006-10-12 08:42:01 · 25 answers · asked by rosbif 6 in Medicine

2006-10-12 08:38:12 · 10 answers · asked by filotofo 1 in Mathematics

this has completely baffled me, my cousin just rang up and asked for help with her science homework and she said her teacher said it began with "s". any one know? or is this teacher just crap?!

2006-10-12 08:36:57 · 19 answers · asked by Eve 1 in Chemistry

Water is filled to 4cm below the top of the prism which makes the volume to be 72. When you turn the prism on its side how many cm from the top is the water? Explain

2006-10-12 08:35:17 · 6 answers · asked by D M 1 in Mathematics