Science & Mathematics - 24 September 2006

2006-09-24 18:55:34 · 5 answers · asked by A Lo 1 in Other - Science

if at all evolution is gone thrg tree structure, it natural that he has to fight with others, which one r that species?

2006-09-24 18:54:50 · 5 answers · asked by parag 1 in Zoology

2006-09-24 18:52:53 · 14 answers · asked by Anonymous in Mathematics

2006-09-24 18:45:32 · 4 answers · asked by Jay-V-Dub 3 in Geography

2006-09-24 18:44:54 · 4 answers · asked by itsaloni 1 in Chemistry

Can someone exlain it to me using the principal quantum number (n), quantum number (l), magnetic quantum number (m) spin quantum number (s) in a sensible and visual way?

2006-09-24 18:43:42 · 2 answers · asked by ibid 3 in Physics

2006-09-24 18:42:53 · 13 answers · asked by Anonymous in Mathematics

2006-09-24 18:35:41 · 7 answers · asked by itsaloni 1 in Chemistry

Can anybody calculate the the length traced by a projectile, shot with a speed of 5m/s and at an angle of 45 with the horizontal? one who solves this get the mathematics award :) ,but yes steps should b there!!

2006-09-24 18:32:31 · 3 answers · asked by outofthisworld 2 in Mathematics

which of the following is NOT a characteristic of an ion channel
A.It extends from one side of the cell membrane to the other
B. it may or may not have a gate
C. it is polar, so charged substances, such as ions, can pass through the nonpolar lipid bilayer
D. it allows ions to move against their concentration gradient.

2006-09-24 18:31:28 · 6 answers · asked by Anonymous in Biology

Apply the laws of Logrithms to write log (c) (cuberoot(acSquared)/brootd) in expanded form. (c) indicated base.

2006-09-24 18:30:56 · 1 answers · asked by gg 4 in Mathematics

one of the earliest high quality mic. was d capasitor mic. consisting of a flat circular disk of metal foil separated by a thin insulating washer around its periphery from a flat conducting sheet. the foil and plate form a capasitor. the plate is grounded and the foil is raised to a potential V through a resistor. if the resistor is 10x10^6 ohm and if the foil diameter is 75mm, its separation from the plate 1mm, potential 100V, what rms voltage change when 500Hz vibrates the foil through a total amplitude of 40micrometer at its midpoint. assume that the midpoint amplitude of the foil is twice the average displacement across the entire foil surface.

2006-09-24 18:30:39 · 1 answers · asked by tidanni 1 in Physics

Full Q: A quality control engineer samples 5 from a large lot of manufactured firing pins and checks for defects. Unknown to the inspector, 3 of the 5 sampled firing pins are defective. The engineer will test the 5 pins in a randomly selected order until a defective is observed (in which the case the entire lot will be rejected). Let y be the number of firing pins the QC engineer must test. Find and graph the probability distribution of y,

My understanding: y should be 1, 2, and 3, since by the 3rd pin, the defect will definitely be it (if not on the first two) because of the 3/5 probability and sample size of 5. The prob that the first item drawn is a defect is p(y=1) = 3/5 -- this is correct.

For p(y=2) I figured (2/5)(3/) -- wrong! same for p(y=3)...
The answers given are: p(2)=3/10 , p(3)=1/10
I don't understand how......

2006-09-24 18:26:09 · 2 answers · asked by Gizmo 1 in Mathematics

1/log(10)a + 1/log(10)a = 1/log(100)a How do I prove this? not solve for a, I need to prove it.

2006-09-24 18:26:08 · 5 answers · asked by gg 4 in Mathematics

Anything 'distinguishable' must be distinguishable from self.

2006-09-24 18:21:51 · 12 answers · asked by The Knowledge Server 1 in Other - Science

We have-
1. self.
2. things distinguishable from self (non self).
3. things indistinguishable from self.

Is 3 and 1 same or different?

2006-09-24 18:18:10 · 9 answers · asked by The Knowledge Server 1 in Other - Science

I really need to know how to do this question:

What number of moles of O2 is needed to produce 14.2 grams of P4O10 from P? (Molecular wight P4O10 = 284 g

2006-09-24 18:16:29 · 3 answers · asked by kruzzz80 2 in Chemistry

2006-09-24 18:14:07 · 10 answers · asked by Panda 3 in Chemistry

why wouldn't they appear to look like if your looking out from a merry go rounds edge?

2006-09-24 18:13:12 · 13 answers · asked by Ryan C 1 in Astronomy & Space

At the local Sunday School, the teacher brought in some puppies. There were
20 more children than puppies. In the corner of the room, the teacher had
an ant's nest. In the nest were exactly 10 times more ants than children.
In total, including the teacher, the children, the puppies and the
ants,there were 1440 legs in the room.

2006-09-24 18:12:06 · 7 answers · asked by Jeffrey Z 1 in Mathematics

Statement: When 2.0 ml of 1.50-M Ammonium Phosphate is mixed with 1.000 ml of .750-M Ferrous Acetate, a precipitate forms.

Question: Calculate the theoretical yield (in grams) of the precipitate and identify the limiting reactant.

Please help!! I've been stuck on this for so long.

2006-09-24 18:11:49 · 3 answers · asked by Lily126 2 in Chemistry

2006-09-24 18:09:54 · 12 answers · asked by Tina 1 in Mathematics

I don't know how to prove 1/Log a + 1/Log a = 1/log 100 a (10 is the base)

2006-09-24 18:06:47 · 4 answers · asked by gg 4 in Mathematics

There is a question I am not sure exactly what to do for it "For log y= log(0.5x-3) + log 2, State the domain, then express y as a funtion of x."

2006-09-24 18:05:07 · 3 answers · asked by gg 4 in Mathematics

2006-09-24 18:04:34 · 10 answers · asked by itsaloni 1 in Chemistry

1.Anything 'distinguishable' must be distinguishable from self.

2. Things indistinguishable from self cannot be distinguished from one another.

2006-09-24 18:03:59 · 5 answers · asked by The Knowledge Server 1 in Other - Science

What is the difference between quantum physics and mechanics? Are these considered a true science? If so, why?
thank you for your help

2006-09-24 18:01:26 · 5 answers · asked by Sillira 3 in Other - Science

2006-09-24 18:00:48 · 5 answers · asked by kristymia 1 in Biology

2006-09-24 18:00:11 · 11 answers · asked by itsaloni 1 in Chemistry

I heard that there is a Russian mathmetician who solved one of the most difficult unsolved equation. He left his job and focused only on this problem for 7 years. Anybody know this story..and his name?

2006-09-24 18:00:04 · 4 answers · asked by Calgarian_man 2 in Mathematics