Science & Mathematics - 10 February 2007

this question is from PERMUTATION AND COMBINATION of standard 11(NCERT).

2007-02-10 20:33:55 · 9 answers · asked by aanchal p 1 in Mathematics

2007-02-10 20:33:03 · 5 answers · asked by Anonymous in Mathematics

How much maximum water can pass from a 1/2" hole in 1 hour? pressure is 145 psi.

2007-02-10 20:32:46 · 1 answers · asked by Anonymous in Engineering

This is shown when a windowpane vibrates at the same frequency as a thunderclap.
the Doppler effect
resonance
reverberation
constructive interference

2007-02-10 20:32:26 · 2 answers · asked by Anonymous in Other - Science

2007-02-10 20:30:32 · 15 answers · asked by Anonymous in Medicine

I've noticed alot of cities have streetlights that are tinted slightly copper/orange, instead of the clear/white lights we're used to indoors. Is there a reason for this?

2007-02-10 20:29:27 · 9 answers · asked by la_resistance28 2 in Engineering

2007-02-10 20:27:57 · 10 answers · asked by Anonymous in Weather

a) In ordinal scalling, each response is place into a catergory and arranged in a numerical order where one catergory is seen to have more of some property than another catergory.

b) With a ratio scale, there is interval scaling but no meaningful zero value.

2007-02-10 20:25:40 · 2 answers · asked by chiwee_tan 1 in Mathematics

In watching Star Trek & the Fly, the teleporters all beckon the question- is teleportation a science that is a physical impossibility- or is it a possibility? What is the mechanical process that would break a solid object down into energy? And what reassembles that object on the other side? And is it possible what arrives is in fact the same thing that teleported, or simply a copy therof? The Fly presented an interesting notion- with two lifeforms in a telepod, they would be spliced together if teleported. Of course since we carry thousands of miscroscopic organisms, wouldn't thier genes be spiced as well?
I never understood why on Star trek, people beaming up and down didnt collapse into a puddle of protoplasm- unless they were in a gravity free field, that kept them upright until they fully beamed in.
Do you think teleportaion, as depicted in Star trek can ever be acheived?
How could an object in motion be teleported, yet retain its original form and appearance?

2007-02-10 20:24:34 · 6 answers · asked by OctopusGuy 1 in Physics

2007-02-10 20:24:23 · 11 answers · asked by zain 2 in Physics

Surveying 12 jurors and recording whether there is a "no" response when they are asked if they have ever been convicted of a felony.

2007-02-10 20:24:12 · 3 answers · asked by pooh 1 in Mathematics

2007-02-10 20:23:57 · 1 answers · asked by Lizzy C 2 in Botany

This is an argument that has been going around my family and I would like to sort it out.

2007-02-10 20:23:49 · 2 answers · asked by GeCkO_GaL 2 in Zoology

Awave that carries a large amount of energy will always have a large amplitude.
small amplitude.
high frequency.
short wavelength.

2007-02-10 20:20:23 · 3 answers · asked by Scienceguy S 1 in Other - Science

When a little boy blows a dog whistle, his dog comes, even though the boy can't hear the whistle. Explain why the boy can't hear the whistle, but his dog can.

One of the reasons is because the frequency might be too high, (over 20,000 hz) can't think of any thing else

2007-02-10 20:18:54 · 6 answers · asked by Scienceguy S 1 in Other - Science

2007-02-10 20:18:05 · 2 answers · asked by nageshgk27 1 in Botany

2007-02-10 20:13:04 · 3 answers · asked by Lai Yu Zeng 4 in Physics

x^2/3 -x -1/6 = 0

2007-02-10 20:12:40 · 6 answers · asked by Sam G 1 in Mathematics

What is the equation of the line through the origin that is perpendicular to the line y = 1/2x + 1.

Can you also please tell me how to work out how to do these step by step, maybe also how to find parallel line equations, step by step. Thanks.

2007-02-10 20:12:12 · 3 answers · asked by spork90 2 in Mathematics

I'm trying to take the gold off some items, like copper or metal. I would like to know if there is a way of doing this

2007-02-10 20:11:34 · 1 answers · asked by paul s 1 in Chemistry

2007-02-10 20:10:30 · 5 answers · asked by Pammmm :) 3 in Astronomy & Space

2007-02-10 20:07:44 · 9 answers · asked by Anonymous in Mathematics

A fuse is wired in series with a light. If the filament of the bulb is a metal (e.g., tungsten), is the fuse more likely to blow-out immediately after the switch is closed or some later time after the bulb has been on for a while? Explain your answer. What if the filament were made from a semiconducting material (e.g., carbon)?

2007-02-10 20:07:30 · 3 answers · asked by 3ajeeba_q8 2 in Physics

# Atlanta
# Austin
# Boston
# Chicago
# Cincinnati
# Cleveland
# Dallas
# Denver
# Detroit
# Honolulu
# Houston
# Indianapolis
# Kansas City
# Las Vegas
# Los Angeles
# Miami
# New Orleans
# New York City
# Orlando
# Philadelphia
# Phoenix
# Portland
# Sacramento
# San Antonio
# San Diego
# San Francisco
# San Jose
# Seattle
# St. Louis
# Washington, D.C

2007-02-10 20:04:21 · 13 answers · asked by amazed !!! 4 in Geography

n= number of sides
s=side length

(1/2*s/tan(180/n)*1/2*s*n)

i found it but i don't know if its right

2007-02-10 19:59:12 · 3 answers · asked by ollie w 1 in Mathematics

Ok so here is the question:

The volume of a cube is 27 inches cubed.Find the total surface area of that cube.

When someone finds the answer please,please let me know!!

2007-02-10 19:56:19 · 8 answers · asked by pagie22346578 2 in Mathematics

What does MDCLIXV stand for??

2007-02-10 19:54:50 · 4 answers · asked by GeCkO_GaL 2 in Mathematics

why are there signs pointing to volcanic eruptions in Hawaii when volcanoes are dangerous? Soz this is homeowrk

2007-02-10 19:53:07 · 7 answers · asked by aaron1536 1 in Earth Sciences & Geology

1.How many moles of NH3 will be produced by the complete reaction of 1.5 moles of Hydrogen with Nitrogen?

2. How many moloes of Nitrogen are required?

if its possible can you show the process to get the answer

2007-02-10 19:52:57 · 1 answers · asked by aly 1 in Chemistry

how many grams of Na are required to react with 50 g of Chlorine to produce sodium chloride?

2. How many grams of NaCl are produced?

if you can write the equation that you have to follow...

2007-02-10 19:51:24 · 1 answers · asked by aly 1 in Chemistry