Science & Mathematics - 25 September 2006

1) the density of a gold is 19.32 g/mL. if sample has a volume of 48.9 L, wut's the mass?

2) find the volume in dm^3 of a sample aluminum if density is 2.699 g/mL n mass is 26 g.

please walk me through both or at least both questions. ur help is greatly appreciated!!

2006-09-25 08:33:53 · 6 answers · asked by Anonymous in Mathematics

x-y=6
xy=4
pls solve simultaneous equation , give answer in simplest surd form

2006-09-25 08:33:50 · 13 answers · asked by GANGSTA PANGSTA 1 in Mathematics

An Iceboat sails across the surface of a frozen lake with constant acceleration produced by the wind. At a certain instant, the boat's velocity is V_1 = (6.30 m/s)i^ +(-8.42 m/s)j^. Three seconds later, because of a wind shift, the boat is instantaneously at rest. What is it's average acceleration for this 3 second interval? Explain.

i^ = i hat, j^ = j hat

2006-09-25 08:32:33 · 2 answers · asked by Anonymous in Mathematics

2006-09-25 08:31:49 · 2 answers · asked by bigdogclem 1 in Other - Science

Its my homework on Air (Science year - 5)

2006-09-25 08:29:29 · 10 answers · asked by Anmol 1 in Earth Sciences & Geology

2006-09-25 08:24:19 · 71 answers · asked by Anonymous in Medicine

2006-09-25 08:23:28 · 9 answers · asked by Anonymous in Physics

or more?
If you have a bottle of water in the car, and it is very hot outside, like 30 degrees Celsius. Inside the car temperature is more than that, and so is the water temperature in a bottle.When you drink the water feels hot, so while driving (at safe speed, that is max 120 km/h), you keep the botle outside the car, in order to lower it's temperature.
Me and my husband argued about water's temperature. He said that the temp will fall under environment's temperature and I said it won't because the "outside" counts as a big termostat. We finally put a bet an decided to ask around.

2006-09-25 08:23:22 · 6 answers · asked by Anonymous in Physics

210 Pb
Beta Decay

2006-09-25 08:20:26 · 2 answers · asked by KK O 1 in Chemistry

What is the thing that turns into solid when it is heated(when it is warm<>)??!



THINK OF THE ANSWER and if you didnt know it read this>>>
"dO YOU HiT YOUR MONckEY?"
- - --



NOW do you know the answer? tell me what you think?

2006-09-25 08:18:17 · 4 answers · asked by xXblacknwhiteXx 2 in Chemistry

2006-09-25 08:17:07 · 13 answers · asked by star 2 in Astronomy & Space

2006-09-25 08:16:58 · 6 answers · asked by Anonymous in Zoology

2006-09-25 08:16:43 · 3 answers · asked by star 2 in Astronomy & Space

222 Rn

2006-09-25 08:16:16 · 2 answers · asked by KK O 1 in Chemistry

2006-09-25 08:13:10 · 6 answers · asked by star 2 in Astronomy & Space

is there any way to build your own generator? Just like a tiny one to play with.

2006-09-25 08:12:55 · 1 answers · asked by Harezichi 2 in Earth Sciences & Geology

Do alcohol burners run on regular isopropyl alchohol?

2006-09-25 08:12:14 · 3 answers · asked by Harezichi 2 in Chemistry

I want arguments for and against the idea that man has walked on the moon, just to get an idea of how many people believe each side.

If you do believe it, how can you be sure that the entire thing wasn't a giant hoax?

If you don't believe man ever walked on the moon, why not? Is there a distrust in mankind's ability to put people on the moon, or is it more of a distrust in mankind's ability to be truthful?

2006-09-25 08:12:01 · 25 answers · asked by EvilFairies 5 in Astronomy & Space

The strongest acid below is _____.
A) CH3 COOH
B) CH2Cl COOH
C) CH2F COOH
D) CH3 CH2 COOH

okay I'm pretty sure out of A,B,C the strongest is C, because the F is more electronegative then the H and Cl, in A anb B. Im not sure how to determine between C and D though.

2006-09-25 08:11:57 · 5 answers · asked by hmmm 2 in Chemistry

The above question is to do with chemistry. Just need a basic answer.

2006-09-25 08:11:50 · 8 answers · asked by khuram r 1 in Chemistry

2006-09-25 08:10:42 · 13 answers · asked by サンダース 2 in Biology

2006-09-25 08:07:52 · 7 answers · asked by Byron N 2 in Mathematics

2006-09-25 08:05:34 · 12 answers · asked by markpoo 2 in Engineering

If they can send a probe to Mars, why can't then send a person?

2006-09-25 08:02:02 · 10 answers · asked by BreadCollision 1 in Physics

i know that Einstein's special relativity proves that but how?why by reaching high speeds time slows down?

2006-09-25 07:57:42 · 9 answers · asked by Anonymous in Physics

My normally rational, college-educated sister entered a gem shop in Arizona and felt an "intense feeling of peace and goodness," spent almost two hours in there chatting with the proprietor, and came out with a couple of crystals and stuff he gave her for free. I thought it was a manic episode, but she is still sticking with the crystals and says holding them makes her feel "right".

I want to know if there have been any scientific studies done on crystals, whether they in fact "give off" any energy and if so, how. What have you heard?

2006-09-25 07:56:54 · 12 answers · asked by LisaT 5 in Other - Science

I know that there are 365 days in a year but how comes there is and extra day every 4 years and why is it necessary?

2006-09-25 07:55:13 · 15 answers · asked by Anonymous in Other - Science

2006-09-25 07:52:21 · 5 answers · asked by BIMISHA B 1 in Biology

A train moving at a constant speed of 60.0 km/h moves east for 40.0 min. then in a direction 50.0 degrees east of north for 20.0 min, and finally west for 50.0 min.
What is the average velocity of the train during this trip?

2006-09-25 07:51:51 · 7 answers · asked by Anonymous in Mathematics

2006-09-25 07:49:18 · 3 answers · asked by Anonymous in Botany