Science & Mathematics - 25 October 2007

Why can't we see the stars in the day? Is it because of the sun? Why can we only see them at night?

2007-10-25 02:51:06 · 7 answers · asked by Anonymous in Astronomy & Space

My mom was having some pain at her joint, after consulting a doctor, the doctor told her that she has bone spur. The doctor gave her some medicine and told her that if medication couldn't help to improve the condition, she'll have to undergo operation.

I did some research online. according to what I've found, bone spur cannot be 100% cured. Even after operation, it still has the tendency to relapse. There is no medicine will 100% make bone spurs disappear, if it does, bones in our body will disappear too!!!

However, my mom come accross someone making some paste plaster to be stick to the bone spurs area to "cure" it. I feel sceptical about it. I think the medical paste comes fr soem sort of chinese herbs. They claim bone spurs can be cured after apply 2 months.

Has anyone heard about this kind of treatment, or is it true? How can it make bone spurs "disappear"?

2007-10-25 02:47:39 · 5 answers · asked by june81 2 in Medicine

2007-10-25 02:45:15 · 6 answers · asked by Anonymous in Biology

2007-10-25 02:41:26 · 7 answers · asked by Anonymous in Mathematics

if u can give presentation it will add more advantage for me.

2007-10-25 02:40:52 · 2 answers · asked by Sachin B 1 in Earth Sciences & Geology

IM TALKING ABOUT EARTHS CRUST

2007-10-25 02:38:46 · 4 answers · asked by Anonymous in Earth Sciences & Geology

(6, ____ ) ( ____, 0) (0, ____ ) ( ____, -4) fill in the blanks.

2007-10-25 02:38:13 · 5 answers · asked by ilovedstny 1 in Mathematics

integral sin-1 sqrt(x) - cos-1sqrt(x) / sin-1 sqrt(x) + cos-1sqrt(x)

-1 stands for inverse of
i got
as denom is pi/2 and cos-1 sqrt(x) = pi/2 - sin-1 sqrt(x)
sin-1 sqrt(x) gets cancelled

but answer given is ( 2(2x-1) / pi sin-1 sqrt(x) )+
(2 sqrt(x- x^2)/pi ) -x + c

please help me.

2007-10-25 02:37:13 · 1 answers · asked by ember 2 in Mathematics

2007-10-25 02:33:10 · 9 answers · asked by G-Town Knight 1 in Earth Sciences & Geology

Anyone can help me calculate the integral of [cos(x^2)] from -pi/4 to pi/4 . Any help is appreciated, thanks!!

2007-10-25 02:29:54 · 3 answers · asked by Mamichiyo 3 in Mathematics

solve 9x^5-3x^4-31x^3-13x^2-20x-4=0.

2007-10-25 02:22:32 · 1 answers · asked by Anonymous in Mathematics

2007-10-25 02:19:24 · 2 answers · asked by CourtneyMT 3 in Chemistry

what is the only thing that can be differentiated between the twins?

think.....think....oh yeah..don't hit that search option.

2007-10-25 02:05:38 · 11 answers · asked by SIMONE 5 in Biology

2007-10-25 02:05:33 · 4 answers · asked by sureshbabusintst 1 in Astronomy & Space

One mole of nitrogen gas confined within a cylinder by a piston is heated from 0°C to 883°C at 1.00 atm.
a) Calculate the work of expansion of the gas in joules (1 J = 9.87 10-3 atm·L). Assume all the energy is used to do work.
b) What would be the temperature change if the gas were heated with the same amount of energy in a container of fixed volume? (Assume the specific heat capacity of N2 is 1.00 J/g·K.)

I've been trying to figure this out all morning...

2007-10-25 02:01:28 · 1 answers · asked by Anonymous in Chemistry

And list just couple of reasons for the use of energy in a system that is living.

2007-10-25 01:52:27 · 3 answers · asked by Gianfi 1 in Biology

Why were sea levels higher a million years ago?

2007-10-25 01:52:22 · 2 answers · asked by :)easy 2 in Earth Sciences & Geology

calculate the concentrations of all species in this solution.
[H+] mol/liter
[OH -] mol/liter
[Cl -] mol/liter
[NO-] mol/liter

2007-10-25 01:48:26 · 3 answers · asked by Anonymous in Chemistry

... - When will it begin?.
- Where in our Universe will it start from?
- How long will the event last?
- How much damage will it do to vulnerable parts in our galaxy (Milkyway)?
- How can we possibly avoid them from bombarding through Earths' atmosphere?
- Will they only strike Earth or other planets in Milkyway, including our Sun and satellites?

2007-10-25 01:41:58 · 6 answers · asked by Hitesh_M 2 in Astronomy & Space

An FM station broadcasts classical music at 89.5 MHz (megahertz, or 106 Hz). Find the wavelength (in m, nm, and ) of these radio waves.

2007-10-25 01:40:50 · 12 answers · asked by Anonymous in Physics

2007-10-25 01:34:26 · 7 answers · asked by Anonymous in Astronomy & Space

2007-10-25 01:31:13 · 10 answers · asked by Anonymous in Astronomy & Space

2007-10-25 01:28:30 · 13 answers · asked by Jk 1 in Physics

A box contains 25 balls, 10 are blue and 15 are red. Lest x denote the number of blue balls in a random sample of 3 balls (sampling without replacement). Construct a probability distribution table for the variable x, and calculate the expected value of x.

Appreciate the help :)

2007-10-25 01:26:03 · 2 answers · asked by Hannah 4 in Mathematics

2007-10-25 01:25:18 · 2 answers · asked by bzone99 2 in Weather

what is a right angle. i asked earlier about a right angled triangle but got it wrong- it was a right angle i needed to know about

2007-10-25 01:24:08 · 12 answers · asked by londonhorsepink 1 in Mathematics

I'm wondering when the waxing quarter moon is in England so i can perform a spell.

2007-10-25 01:22:55 · 4 answers · asked by Stunnerboy4u23 1 in Astronomy & Space

1. Aluminium + Sulfuric acid -> Aluminium sulfate + Hydrogen

2. Copper sulfate + Lead nitrate -> lead sulfate + Copper nitrate

3. Copper + Oxygen -> Copper oxide

can someone please do these questions for me and show answers please! thank you

2007-10-25 01:22:13 · 6 answers · asked by . 4 in Chemistry

Minor earthquakes frequently occur in the Laurentians. Assume that the "waiting times" in days between earthquakes is exponentially distributed with PDF f(t) = 0.125e^-0.125t. What is the probability that the waiting time for the next earthquake will be at least 5 days?

2007-10-25 01:19:28 · 2 answers · asked by Hannah 4 in Mathematics

2007-10-25 01:13:39 · 8 answers · asked by Lynn 1 in Mathematics