Science & Mathematics - 31 July 2007

what do people mean by a shooting star.

2007-07-31 02:49:24 · 10 answers · asked by Anonymous in Astronomy & Space

When does the fossil record indicate that fish with jaws first appeared?

A. Mesozoic era
B. Cenozoic era
C. Paleozoic era
D. Pre-cambrian time

2007-07-31 02:46:46 · 2 answers · asked by ♥Anonymous♥ 2 in Zoology

2007-07-31 02:45:51 · 7 answers · asked by Anonymous in Astronomy & Space

polar bear or grizzly bear.
i heard they were both dangerous

2007-07-31 02:45:09 · 5 answers · asked by Anonymous in Zoology

Kingfishers most often dive into the water parallel to the rays of the sun; that is, they dive in from the East in the morning and from the West in the afternoon.

2007-07-31 02:41:48 · 3 answers · asked by Anonymous in Physics

Has it been proven?

2007-07-31 02:40:56 · 4 answers · asked by Anonymous in Biology

My boyfriend and I were riding down the road last night to see some friends and I noticed that the moon was very large and a very deep orange color. I commented on how pretty it looked and he said it was a lunar eclipse. I laughed and explained how certain gases in the atmosphere make it appear that color when it's that low on the horizon and appears that large (I love astronomy). He stood by his argument saying it was a lunar eclipse. I told him eclipses only happen twice a year and it's not quite time yet for another one.

Can you help clear this up for me?

2007-07-31 02:32:35 · 11 answers · asked by Anonymous in Astronomy & Space

1) log (base)4 (x^3 + 37 ) = 3



2) lnx + lnx ^2= 3



3) ln ( 5+4x ) - ln ( 3x+x ) - ln3 = 0



4) f(x) = 4^x - 7

2007-07-31 02:27:59 · 3 answers · asked by WRITEONJW 1 in Mathematics

submerging your head under water

2007-07-31 02:27:52 · 4 answers · asked by Anonymous in Biology

The answer is in tons!

2007-07-31 02:26:14 · 6 answers · asked by Moody Red 6 in Astronomy & Space

2007-07-31 02:25:31 · 5 answers · asked by high-lighter 3 in Medicine

Zircon crystals in a sample of rock were analysed and found to have a daughter to parent (D/P) ratio of 1.8 for the decay scheme 235U to 207Pb. Can someone please esitimate the age of the rock to two significant figuresand comment on the uncertainties and limitations on this estimate.

2007-07-31 02:23:38 · 2 answers · asked by Rachel 1 in Earth Sciences & Geology

2007-07-31 02:22:24 · 4 answers · asked by STEVE J 1 in Astronomy & Space

I get so lost in Doctor Who, that I forget that it isn't real. Could you explain all the science, pysics and astronomy behind it please?

2007-07-31 02:18:38 · 5 answers · asked by Anonymous in Astronomy & Space

2007-07-31 02:14:28 · 4 answers · asked by s 1 in Medicine

2007-07-31 02:09:28 · 7 answers · asked by volley 2 in Biology

2007-07-31 02:08:45 · 13 answers · asked by Litz 1 in Zoology

2007-07-31 02:04:44 · 6 answers · asked by Carmela ©1973 3 in Zoology

Nothing makes me more angry than some lazy kid who refuses to learn what is being taught to them in their classes and then they expect us to give them all the answers so they can go back and ace their class even though they are still clueless and ignorant. This is so wrong! How do you expect to get anywhere in life if you refuse to learn and use your brain? Those of us who are giving them the answers are NOT helping these kids. We are hurting them by not allowing them to learn anything and we need to stop.

2007-07-31 02:03:47 · 18 answers · asked by B. 7 in Astronomy & Space

2007-07-31 01:52:50 · 13 answers · asked by rain_zak 2 in Weather

IF WE COULD GET THE HUMAN RACE TO WALK AT A GIVEN TIME IN ONE DIRECTION COULD IT SLOW DOWN OR SPEED UP THE EARTHS REVOLUTIONS?

2007-07-31 01:52:29 · 7 answers · asked by jay marcus 3 in Physics

1) An arrow is fired vertically upward at 40m/s from the top of a sheer cliff. It takes 12s to reach the base of the cliff. How high is the cliff?

2) How do I get distance from a velocity-time graph?

Thanks!

2007-07-31 01:50:37 · 3 answers · asked by Anonymous in Physics

2007-07-31 01:44:26 · 9 answers · asked by blacknwhite93 2 in Astronomy & Space

solve 8t+11=7t-6

2007-07-31 01:43:34 · 6 answers · asked by david b 1 in Mathematics

in centimeters

2007-07-31 01:39:30 · 4 answers · asked by *Gen.Orange* 2 in Mathematics

The Infra Red light is used for reducing Muscular Pain and the Red beam Light is used for Educational Purposes to point out at Maps etc. What is the difference between these to lights. These are both Infra Red Lights or differ in there composition and use.

2007-07-31 01:39:06 · 4 answers · asked by zurefa45 1 in Physics

2007-07-31 01:34:45 · 14 answers · asked by liannE 1 in Mathematics

3x+4y= 6x
x-3y= -8

2007-07-31 01:33:49 · 6 answers · asked by shinnel 1 in Mathematics

and they say that if it erupts it would spread at least a thousand miles, i hope the governemnt doesnt let people build that close,

they say or at least i have read that some parts of the park have rose one metere in the last eighty years, that sounds dangerous
it is a rare flat vocano, and that is what makes all the hot springs and gysers boil

2007-07-31 01:28:22 · 7 answers · asked by Anonymous in Geography

1. A circular disc is rotated about an axis O through its center by the application of two forces. A force of magnitude 11 N is exerted at a distance of 0.34 m from the axis and at an angle of 58° from a radial line extending from the axis through the point of application Q of the force. A second force of magnitude 15 N is exerted at a distance of 0.26 m from the axis and at an angle of 119° from a radial line extending from the axis through the point of application P of the force. Determine the net torque on the disc about its center and which way the net torque accelerates the disc.

2007-07-31 01:23:43 · 3 answers · asked by sunday 1 in Physics