Science & Mathematics - 27 October 2006

2006-10-27 04:42:07 · 8 answers · asked by bekah_2009 2 in Biology

We all know we have 24 hours in a day
Why is it that if we put our clocks forwad you gain an hour?
When you go back you loose an hour?
Isn't that like saying we have 23 or 25 hours then?
Some one please explain...

2006-10-27 04:42:02 · 5 answers · asked by crittenden1986@sbcglobal.net 1 in Mathematics

I have been researching some info for a little essay im doing with regards to centriole in the sperm. Does part of one of the centriole elongate creating part of the tail during the growth of the sperm?
thanks to my previous question.

2006-10-27 04:41:02 · 3 answers · asked by sally b 1 in Biology

The coursework is invetigating the opposite corners in a square and rectangel and I have the formulae but need help doing a conlusion and showing how i got the formulae for rectangles which was- (w-1) * (L-1) * width of grid rectangle is in plz help?

2006-10-27 04:39:51 · 3 answers · asked by A 2 in Mathematics

To be used with a lazer to make holographic images. Cheers

2006-10-27 04:38:52 · 2 answers · asked by schming2005 1 in Physics

2006-10-27 04:36:53 · 7 answers · asked by Anonymous in Chemistry

Company/ Annual Return/ Std Dev

I 12.0% 1.5%

II 11.5% 1.0%

III 13.0% 3.0%

IV 14.0% 4.0%

What is the probability the best company(company 2)makes more than 10%?

2006-10-27 04:35:18 · 2 answers · asked by mrkittypong 5 in Mathematics

When a gun is fired vertically up into the sky the speed of the bullet will be retarded due to gravity and finally reach zero .Then it will start comming down and increase speed due to gravity.Will it attain the same speed as it shot up?

2006-10-27 04:32:36 · 14 answers · asked by matthewj101 1 in Physics

I need to clarify this for someone

2006-10-27 04:32:12 · 14 answers · asked by Robert B 3 in Biology

“In a meander section of a body of water, the outside of the bend will flow faster than the centre or the inside of a river’s meander.” What is the cause of this?

2006-10-27 04:31:37 · 3 answers · asked by Anonymous in Geography

2006-10-27 04:30:29 · 8 answers · asked by \y S 1 in Biology

2006-10-27 04:29:34 · 1 answers · asked by sohrab y 1 in Botany

2006-10-27 04:29:03 · 24 answers · asked by Isaac 1 in Astronomy & Space

also, what is the chemichal symbol, atomic number, average atomic mass, number of valence electrons, group number and period number is Oxygen?

2006-10-27 04:28:44 · 8 answers · asked by Mark 1 in Chemistry

How do they count ?

2006-10-27 04:27:23 · 19 answers · asked by Arry Goo 2 in Mathematics

I'm curious to know if the nitrogen/oxygen (and myriad other components) ratio would change to any significant degree.

2006-10-27 04:27:08 · 8 answers · asked by clare5171 1 in Chemistry

spicules, granulation, convection,photosphere, core, photons

Serious answers please

2006-10-27 04:26:47 · 4 answers · asked by Lisa 1 in Astronomy & Space

An undentified liguied was found to have a mss of 7.5 g and occupied a volume of 350mL. what is the density of this unidentified liquid in kg/L ?

2006-10-27 04:26:46 · 2 answers · asked by Dahlin 1 in Chemistry

2006-10-27 04:26:31 · 8 answers · asked by Mritanjul 2 in Astronomy & Space

Statistically are there are more AUTO-accidents shown to be occuring when it is dark out. I mean people drive to work and well the majority drives at what hours? And so we would want it light, right? If it was not for this SAFETY ISSUE I would NOT be in favor of doing the clock change thing ~ except for this SAFETY reason alone I guess I DO FAVOR THE CLOCK CHANGE. Changing the clock does not change how many hours of light or dark you have in a 24 hour period it just shifts when you have the light or dark hours. There is something "mystical" about how the "DARKNESS CALLS the LIGHT", and when you change the clocks sometimes we miss that.....
BUT HEY ; Safety first Mysticism LATER.
we just have to make some adjustments.

2006-10-27 04:25:10 · 5 answers · asked by Anonymous in Physics

2006-10-27 04:24:49 · 9 answers · asked by Lisa 1 in Astronomy & Space

2006-10-27 04:23:37 · 3 answers · asked by Lisa 1 in Astronomy & Space

1) In an accelerated physics clas, student #1 climbs a ladder and drops a steel ball from the ceiling. Srudent #2, using a stopwathc, times the fall of the ball fro mthe ceiling to the flor with a time of 1.5 s. What is the height of the room?

My answer : x = 0(1.5) + 1.5^2(9.8)/2-----> [11.025 m]

2) A woman is reported to have fallen 44 m from the 17th floor and to have landed on a metal ventilator box, crushing it 46 cm.

a)What is the velocity of the woman before she collids with the box?

b) What is the acceleration or deceleration while in contact with the box?

c) How long did it take her to crush the box?


My answer : (a) Vf^2 = 9.8(2)(44)------>862.4---->[Vf = 29.36 m/s]

(b) ???????
(c) -29.36^2 + 2(a)(46)------> [a = -9.37]
0 = 29.36 + -9.36 (t)------> [3.13 s]

2006-10-27 04:22:15 · 3 answers · asked by Anonymous in Physics

Please comment on the probability (in term of mathmatics/statistics) of vasious atoms (carbo/nitrogen/hydrogen) to come together to form the first basic cells? How many atoms does it take to form such primitive cell "in the beginning"?

2006-10-27 04:16:21 · 8 answers · asked by Steve R 2 in Biology

Useful websites would be welcomed.

2006-10-27 04:16:00 · 6 answers · asked by BEN S 1 in Biology

2006-10-27 04:11:21 · 13 answers · asked by raqem7 1 in Mathematics

2006-10-27 04:06:02 · 10 answers · asked by Anonymous in Physics

Not good with fractions or math. I need the answer, but want to learn how to find out the answer.

2006-10-27 04:03:16 · 20 answers · asked by lbsosweet 1 in Mathematics

Add up how much time the ball is rolling:

Tom rolled the ball to Suzie and it took 0.0034 seconds. Suzie put the ball on the sidewalk and rolled it for 1.11143 seconds to Billy. Billy held the ball for 5.66 seconds and threw it for 1.1 second to Phil. Phil rolled the ball around and around on the ground for 3.25988 seconds. Then he threw the ball up in the air for 0.3 seconds and when it came down it bounced for 0.1 second and then rolled down the hill for 1.89094 seconds into the open storm drain.

2006-10-27 04:02:03 · 11 answers · asked by Anonymous in Mathematics

2006-10-27 04:01:34 · 2 answers · asked by john940507 1 in Engineering