Science & Mathematics - 15 October 2007

spot the errors and point them out to me with the correction!!! thanks.......(not grammar, knowledge)

all waves require a medium to travel in. waves carry the medium from place to place. the height of the crest of the wave or the depth of the trough is called the amplitude. the distance between two crests is the wavelength. the number of waves per second is the frequency.

2007-10-15 02:27:47 · 2 answers · asked by Anonymous in Physics

In the spring and summer of 1993, one of the worst regional floods in U.S. history inundated many lowlying areas of the central U.S. In some cases, entire communities were submerged for weeks. Many people relocated, but many others rebuilt in the same locations. Why would people choose to live in flood-prone areas?

2007-10-15 02:27:18 · 5 answers · asked by Anonymous in Weather

i seem to have 3 racoons that come to a vist ... even go up the deck at night ?
is this an animal that needs to be worried about ? is this dangerous ? do you report to animal control ?
anyone with info. regarding racoon ?

2007-10-15 02:26:39 · 15 answers · asked by Mildred S 6 in Zoology

frequency of radiation in a microwave oven is 2.45 x 10 ^ 9 Hz. show that the wavelength is about 12 cm

2007-10-15 02:24:11 · 4 answers · asked by Anonymous in Physics

how can i prove this?

sin x/1-cosx + 1-cosx/sinx = 2cscx

2007-10-15 02:23:49 · 3 answers · asked by Mitzy D 1 in Mathematics

Decide if the situation requires an exact or estimated answer and explain your reasoning. You are asked to determine the correct amount of liquid medicine to give to a sick baby panda if the directions say to give an amount based on the animal’s weight.

2007-10-15 02:20:25 · 6 answers · asked by MiSs MoM 2 in Mathematics

2007-10-15 02:13:10 · 3 answers · asked by glamorous_pri 1 in Medicine

2007-10-15 02:13:09 · 13 answers · asked by Anonymous in Astronomy & Space

Determine a positive constant c such that the equation
xy^2 − y^2 − x + y = c
has precisely three solutions (x, y) in positive integers.

P.S. xy^2 = x*(y^2)

2007-10-15 02:11:27 · 4 answers · asked by Archit 2 in Mathematics

A chunk of antimatter falling from space, The explosion of A Stony Asteroid.The result of an exploding alien spaceship or an alien weapon going off to "save the Earth from an imminent threat.In 1908, something exploded in an isolated area of Siberia.WHAT DO YOU THINK?

2007-10-15 02:05:13 · 11 answers · asked by WUGGY6X9 2 in Astronomy & Space

Calculate q when 0.10 g ice is cooled from -23°C to -75°C (cice = 2.087 J/g·K).

2007-10-15 01:55:37 · 3 answers · asked by jnester0289 1 in Chemistry

seriously question plz... to eat maybe? do black ants really eat black ants though? maybe it thinks its still alive?

2007-10-15 01:55:04 · 3 answers · asked by mi deng 5 in Zoology

2007-10-15 01:50:04 · 2 answers · asked by Karen F 1 in Biology

Isn't spacetime supposed to be expanding uniformly all over the place? How come we don't seem to experience or feel it here on Earth and in the vicinity of the Solar System?

2007-10-15 01:47:07 · 13 answers · asked by Anonymous in Astronomy & Space

2007-10-15 01:46:16 · 4 answers · asked by Thas 2 in Botany

A gas has volume of 20l measured at 27degreescelsius and 4 atmospheres. what will be its volume at STP?

2007-10-15 01:46:15 · 4 answers · asked by vivalagirl 2 in Chemistry

2007-10-15 01:44:13 · 4 answers · asked by Watch it bub! 3 in Medicine

2007-10-15 01:39:52 · 8 answers · asked by i_squeeze 1 in Medicine

answer!!!

2007-10-15 01:28:34 · 10 answers · asked by zack l 1 in Physics

Tsunami
Tornado
Earthquake
Typhoon
Blizzard
Thunderstorm
Sunny Day
Partly Cloudy Day

2007-10-15 01:27:57 · 6 answers · asked by gothman66972 1 in Weather

(cos(^2)x)cosecx = cosecx - sinx

Note: the (cos(^2)x) is cos squared times x not cos to the power 2x.

any help would be appreciated.

:)

2007-10-15 01:17:22 · 8 answers · asked by Anonymous in Mathematics

neils bhors model of atom

2007-10-15 01:16:18 · 2 answers · asked by kannan 1 in Physics

I have some aledgedly AA6061-T6 material but it fails the tensile strenth, elongation, and area reduction tests according to ASTM B211-92a. It was also noted that the copper content of that material is higher than allowable for 6061 alloy composition.
Q1: Can higher copper content in Al alloy reduce tensile strength and lead to higher deformation?
(Note that Si and Mg components were within allowable range).
Q2: Any other "typical" reasons for failing tensile strength in Al ?

2007-10-15 01:10:50 · 3 answers · asked by Marianna 6 in Engineering

2007-10-15 01:08:23 · 4 answers · asked by Anonymous in Earth Sciences & Geology

I've allways wondered if Dark Matter and Antimatter were close together because Dark matter can't been seen and I would think that antimatter couldn't be seen either. Seeing as antimatter is the opposite of regular matter.

2007-10-15 01:05:00 · 2 answers · asked by crapp420 2 in Physics

I'm doing a scatterchart for my chemistry class and the data is .0500 and .0350, ect. I can't get excel to show the trailing zeros, it always cuts them off to .05 and .035. Anyone know how to make this program display the zeros? I went to help and it said to go to tools, options, view and uncheck the zero values box. It didn't work. Does anyone know how to do this? thanks

2007-10-15 01:03:45 · 10 answers · asked by Anonymous in Chemistry

Add:

(w5 + 2w3 – 3) + (2w5 – 3w3 – 4)

Thanks!

2007-10-15 01:00:25 · 5 answers · asked by Pete 1 in Mathematics

2007-10-15 00:59:38 · 7 answers · asked by brethren 1 in Medicine

Evaluate 4x^3 + 2x^2 – 1 for x = 1

Thanks for the help!

2007-10-15 00:59:24 · 9 answers · asked by Pete 1 in Mathematics

Why is Pluto not considered a planet anymore?

2007-10-15 00:56:55 · 7 answers · asked by Anonymous in Astronomy & Space