Science & Mathematics - 24 October 2006

2006-10-24 17:17:12 · 3 answers · asked by srikanta 2 in Astronomy & Space

2006-10-24 17:12:43 · 26 answers · asked by Anonymous in Geography

If a physical body gains more mass as it reaches the speed of light, where does that extra mass come from?

2006-10-24 17:10:19 · 12 answers · asked by Kren777 3 in Physics

2006-10-24 17:06:48 · 14 answers · asked by Anonymous in Astronomy & Space

2006-10-24 17:05:49 · 4 answers · asked by Scott 1 in Mathematics

2006-10-24 17:04:41 · 7 answers · asked by Dov F 1 in Biology

I know how a galvanic cell works, and I know that Lithium is a Group1 metal with oxidation states of 0 or +1. That doesn't tell me what ions and salts are in a "Lithium Ion" battery, though. (specifically: cell phone battery)

2006-10-24 17:04:25 · 3 answers · asked by SmartoGuy 3 in Chemistry

2006-10-24 17:00:47 · 5 answers · asked by nhickie b 1 in Biology

2006-10-24 16:58:58 · 3 answers · asked by nhickie b 1 in Biology

2006-10-24 16:57:51 · 5 answers · asked by villan k 1 in Geography

The force of gravity on a 2 kg rock is twice as great as that on a 1 kg rock. Why then doesn’t the heavier rock fall faster?

2006-10-24 16:57:21 · 11 answers · asked by Anonymous in Physics

2006-10-24 16:57:18 · 9 answers · asked by DoingItRight! 2 in Earth Sciences & Geology

a box of mass 2.00kg is on a smooth frictionless ramp which makes an angle of 30.0 degree with the horizontal. A force P = 15.0N which makes an angle of 25.0 degree with the vertical is applied to the box. calculate the normal force component that the ramp exerts on the box.

2006-10-24 16:57:09 · 2 answers · asked by Galaxy D 2 in Physics

A red air track glider of mass 228 g moving with initial velocity +5.60 cm/s collides elastically with a blue air track glider of the same mass moving with an initial velocity of -37.90 cm/s. What will the red glider's velocity be, in cm/s, after the collision? Please give your answer to TWO DECIMAL PLACES. Don't forget the +/- sign! HINT: Do all of the algebra first, before you do any calculations with numbers. If you calculate with the numbers first, you are likely to get an answer that is not quite correct.

2006-10-24 16:55:42 · 3 answers · asked by Anonymous in Physics

2006-10-24 16:54:19 · 11 answers · asked by SandyM 2 in Earth Sciences & Geology

A golf ball is hit from the ground with an initial velocity at 30.0 degree above the horizontal at t = 0.00s. At t =1.50s, it has a speed of 22.0m/s. calculate initial speed of the ball.

2006-10-24 16:53:36 · 2 answers · asked by Galaxy D 2 in Physics

Currently the Haber process uses up about 1% of the worlds energy supply and the energy used for this process is from natural gas. If we experience a shortage in natural gas, is it possible to efficiently do nitrogen fixation with electricity? I'm asking because I'm wondering if it would be viable to produce fertilizer using nuclear energy.

2006-10-24 16:51:25 · 1 answers · asked by professional student 4 in Engineering

it is the geological type of question, and very important to this generation, if you missed it,you might miss something in your life which has been loved most by you.

2006-10-24 16:48:46 · 19 answers · asked by an indian 2 in Geography

I am looking for a good website on bacteria with photos.

2006-10-24 16:46:30 · 8 answers · asked by sallydog 1 in Biology

What you need to do is find two digits. You place them at the beginning and end at the number i will state so that the number is divisible by 99. Let's call the 1st digit "a" and the 2nd digit "b". You basically need to do this: Find the values for a and b so that the number a8548736473674837483376b is divisible by 99. I know it looks hard, but how many options could there be with only a and b? Write you answer as the two digit number "ab".

2006-10-24 16:42:31 · 8 answers · asked by Anonymous in Mathematics

By looking at it im pretty sure that the graph is going to be a parabola because of the x^2. Also that it is shifted one unit to the left because of the plus 1. I do not know what to do with the 4 in the numerator.
Is this a composition of transformations?
Do I have to simplify it into two functions and how do I do it?
What do I do with that 4?!!
Thanks,
Super Confused....

2006-10-24 16:39:50 · 6 answers · asked by ashley13may 1 in Mathematics

2006-10-24 16:35:47 · 1 answers · asked by awantwin2004 2 in Mathematics

2006-10-24 16:35:44 · 3 answers · asked by Ray S 1 in Physics

The recent question about whether the weight of humanity affects the Earth, and an old question by someone who thinks if we all jumped up and down at the same time we could move the Earth, shows how people have no idea of the scale of things.

The Earth is 6 x 10^21 tonnes.

For people who are not familair with powers of 10, that number is 6 with 21 zeroes on the end, or 6 billion trillion tonnes.

If the average human is 50 Kg, the weight of the entire human race is 300 billion Kg

Divide by 1000 for tonnes; that is 300 million tonnes.

That is a pittance compared with the Earth.

If you divide the Earth's mass by the People's mass

6 x 10^21 divided by 3 x 10^8

You come out with 2 x 10^13

That is 20 trillion.

The Earth is 20 trillion times the mass of all the people put together.

2006-10-24 16:30:55 · 4 answers · asked by nick s 6 in Astronomy & Space

I know some plants create secondary compounds like nicotine to make them selves unpalatable, is this the same reason why some plants make caffeine?

In otherwords, what benifit does caffine have for the plant?

2006-10-24 16:27:59 · 4 answers · asked by Beef 5 in Botany

Is it simply because they are afriad to open a science book or read about biology and mutations, dna, and survival of the fittest, or is the believe of a superior being too much for some to deny.....even though there is zero evidence for it.

2006-10-24 16:26:04 · 13 answers · asked by Im Bored 1 in Biology

This question is for someone with the knowledge and the ability to express the answer simply. I've always seen the insinuation that the two branches are not compatible with each other...never quite understood WHY though, seeing as BOTH seem to work pretty well.
Could it be that the answer of "everything" might be found in BIOLOGY?...seeing as neither branch delves into the appearance of life in the universe and how it relates to physics.

2006-10-24 16:25:54 · 5 answers · asked by Anonymous in Physics

I need to know how to transform from ax^2 + bx + c = 0 to the quadratic formula.

2006-10-24 16:25:35 · 10 answers · asked by cooldude 2 in Mathematics

2006-10-24 16:23:46 · 5 answers · asked by Chanelle M 1 in Biology

2006-10-24 16:22:13 · 4 answers · asked by Me 3 in Mathematics