Science & Mathematics - 30 July 2007

what is the speed of the rotation, no links please, just answers will be good.
because we all know the earth is making a full 360 degree angle on a 23.5 degree axis, but how fast does it rotate?

2007-07-30 09:23:45 · 6 answers · asked by D3V!N 5 in Astronomy & Space

1. Lead

2. Anabolic steroids

3. Animal feces

A and B
or all three

2007-07-30 09:16:47 · 3 answers · asked by Mrs. Eric Cartman 6 in Biology

1) Solve the following equations algebraically. Show all work.

a) cuberoot(x) -5=3
b) x 3/2=27
c) 3/4=1 -3x-2/x+1

2007-07-30 09:15:34 · 4 answers · asked by Anonymous in Mathematics

(t^2 + t -6) / (3t^2 -27)

Thanks

2007-07-30 09:11:11 · 9 answers · asked by Aimee R 1 in Mathematics

2007-07-30 09:09:03 · 8 answers · asked by Anonymous in Chemistry

well my junior year of highschool is approaching and i realized i haven't really considered what i wanted to do.. so i thought about it and i narrowed it down to either being a psychiatrist or pharmacist.. personally i think psychiatry would be more interesting because chemistry and other stuff kinda bore me and psychiatrists get paid more but i thought about it and would being a pharmacist be a more solid and safe job? because if you're a psychiatrist what if you don't get that many patients? and althought psychatrists get paid more by the hour wouldn't it depend on how many patients you have? so basically i like psychiatry but would being a pharmacist be better? please lemme know your thoughts =]

2007-07-30 09:07:42 · 7 answers · asked by sports addict1 1 in Medicine

I know it was the Maunder minimum that caused the little ice-age, but if the sun goes mad then calm in 11 year cycles, (i'm not sure how to ask this question), why did that maunder minimum cause a little ice-age but no other have. What was different about that particular one?

2007-07-30 09:06:50 · 6 answers · asked by willow 6 in Other - Science

Since the Moon is moving away from the Earth, what would happen to our planet when it's so far that it's only a dot in the sky @ night?

2007-07-30 09:04:55 · 6 answers · asked by Anonymous in Astronomy & Space

A platform of mass 0.8 kg is supported on four springs (only two springs are shown in the picture, but there are four altogether). A chunk of modeling clay of mass 0.6 kg is held above the table and dropped so that it hits the table with a speed of v = 0.9 m/s.

The clay sticks to the table so that the the table and clay oscillate up and down together. Finally, the table comes to rest 6 cm below its original position.

a) What is the effective spring constant of all four springs taken together?

b) With what amplitude does the platform oscillate immediately after the clay hits the platform?

2007-07-30 09:04:03 · 3 answers · asked by Anonymous in Physics

Would it be better to take physical science or biology first?

Physical science as in physical science... Not physics...

2007-07-30 09:02:25 · 4 answers · asked by Anonymous in Other - Science

My uncle is insisting that blueberrries must have a certain percentage of worms?? when bought by factories to process.

Is this true or is he full of it :) he says that its normal and they are inside blueberries...my yahoo search proved fruitless haha any thoughts on this here??

2007-07-30 08:51:18 · 3 answers · asked by Anonymous in Botany

The half life of radioactive postassium is 1.3 billion years. If 10 grams are present now, how much will be present in 100 years?? 1000 years??

I said, amount now = amount intial / 2 ^ t/half life

so

10 / 2 ^ 100 / 1300000000 and got 9.99

then

10 / 2 ^ 1000 / 1300000000 and got 9.99

is this right???

please tell me where I went rightTHANKS

2007-07-30 08:50:22 · 3 answers · asked by Anonymous in Mathematics

during an eclipse the sun is exactly covered by the moon

2007-07-30 08:44:50 · 20 answers · asked by boozie 1 in Astronomy & Space

I'm going on a diet, & to closely monitor my calorie intake, I'm reading the nutrition facts pannel of everything I eat. Problem is, in Poland (I'm on vacation), they don't have a very descriptive nutrition pannel. It shows how much sugar & fat there is in the food, but not how much calories. I'm good at math & if I can somehow convert fat to calories I can lose alot of weight. Help?

2007-07-30 08:40:42 · 4 answers · asked by Markiiphobia™ 4 in Mathematics

2007-07-30 08:35:59 · 34 answers · asked by stealth92 1 in Biology

You are on a year trip to mars and you need to bring 5 people, what skills should the crew members have?

2007-07-30 08:35:16 · 10 answers · asked by yo_ho_ho_pirates_life 1 in Astronomy & Space

I thought that the coefficient of determination ranges between 0 and 1, but apparently that is not the answer to the question. I have an R square value of 0.826 how do I test this value to conclude that it is greater than 0?

2007-07-30 08:34:37 · 2 answers · asked by Newlywed 1 in Mathematics

also in the field of solar physics or relativistic astrophysics

2007-07-30 08:30:49 · 5 answers · asked by Kavita P 1 in Astronomy & Space

2007-07-30 08:30:39 · 4 answers · asked by penn_state21 1 in Mathematics

I bought a video game for $50.00.
I didn't like it, so I took it to Gamestop for $20.00.
So then I used the $20.00 I got from that game to purchase another game that was selling for $40.00.
At the end I had to pay $20.00 dollars out of my own pocket to pay for the game since I used the $20.00 I got from the other game.

Thanks

2007-07-30 08:30:11 · 3 answers · asked by I'mdabess 2 in Mathematics

2007-07-30 08:25:42 · 9 answers · asked by Anonymous in Weather

2007-07-30 08:24:02 · 12 answers · asked by naturalplastics 4 in Other - Science

Jatropha curcus is a ephorbia family and it is shrubs and grown in wasteland and grown in even poor land.

2007-07-30 08:23:32 · 1 answers · asked by PRAVINCHANDRA PATEL C 1 in Biology

2007-07-30 08:18:28 · 7 answers · asked by Alexander 6 in Physics

what maximum speed could such spaceship achieve, assuming D+D->He4 reaction and 100% efficient rocket motor?

Note:
usually D+D fusion produces either or He3+n or T+p, but lets not worry about this. Consider that engineers solved all problems and D is on input, and He4 on output.

2007-07-30 08:14:54 · 4 answers · asked by Alexander 6 in Physics

Sally worked from 10:45-9:00 on 7.50/hr...how much money is that minus the tax? Sally lives in NY by the way...

2007-07-30 08:13:51 · 10 answers · asked by Anonymous in Mathematics

The Empirical formula of two compounds are CH4. If molar mass of one is 32g/mole and the others is 48g/mole; then find out the chemical formulas of these compounds?
Its the tricky one, isnt it?

2007-07-30 08:13:44 · 6 answers · asked by chem-mystry 2 in Chemistry

The question is the following:
How many years would it take an amount of money to triple if it is invested at 5% compounded continuously?

The choices for answers are the following:
ln3
5ln3
10ln3
20ln3
25ln3
2ln3

I don't need the answer necessarily, but how to solve these types of problems?

2007-07-30 08:13:04 · 5 answers · asked by Anonymous in Mathematics

Can anyone explain this?

2007-07-30 08:11:44 · 8 answers · asked by andrew l 2 in Mathematics

2007-07-30 08:09:48 · 11 answers · asked by penn_state21 1 in Mathematics