Science & Mathematics - 14 December 2007

plz and thnx you

2007-12-14 09:22:42 · 45 answers · asked by Nicky 2 in Chemistry

frontline employees?
coffee break

2007-12-14 09:20:27 · 2 answers · asked by hamid r 1 in Zoology

How many solutions does the equation sin x = 1/810 x have where x is a number of degrees?

2007-12-14 09:19:23 · 1 answers · asked by guineveres_white_wave 2 in Mathematics

i remember seeing a video on discovery tv in which a woman performed telekinesis...

2007-12-14 09:16:21 · 16 answers · asked by neveda 1 in Parapsychology

Wednesday night I dreamed I passed an exam I was scheduled to take today. I took it today and passed! So it looks like I'm psychic after all. There is no other explanation for my dream.

I had a premonition, a foreshadowing of that which was destined to come to pass. And I did this without asking my spirit guide to cheat for me.

Maybe I did so well because--as the ganzfeld experiments proved beyond a reasonable doubt--people can anticipate and predict the future when it comes to computers. (I took the exam on a computer.) If I cheated in this manner I swear it was unintentional.

My only concern is I dreamed a score of 70% (the required minimum) but scored an 80%. Could the ganzfeld effect account for this discrepancy, since the results showed a hit rate of between 0% and 8% over that of chance?

2007-12-14 09:06:12 · 5 answers · asked by Peter D 7 in Parapsychology

Hi,
I was just wondeirng if i could get some help solving this trig identity Prove:
sin^2x sec^2x = sec^2x - 1
i dont know how to prove LS = RS plz help

~Thnx

2007-12-14 09:04:14 · 7 answers · asked by Anonymous in Mathematics

Twice the first of two consecutive integers increased by the square of the second is 78.

2007-12-14 09:03:05 · 4 answers · asked by Bishwanath S 1 in Mathematics

from a long straight section of the turnpike. While looking perpendicular to the turnpike he observes a car passing a milepost at high rate of speed. By the time he gets the radar gun pointed at the car the readings show that the car is 5 miles distant and the distance from the officer to the car is changing at the rate of 54 miles per hour. How fast is the car traveling down the turnpike at the instant the reading on the radar gun was taken?

2007-12-14 09:02:59 · 2 answers · asked by coolredturtle1555 2 in Geography

2007-12-14 08:59:45 · 8 answers · asked by yerfavoritefiddler 4 in Astronomy & Space

2007-12-14 08:58:35 · 2 answers · asked by Dancingchickie 2 in Geography

Please summerize volcanism

2007-12-14 08:58:33 · 1 answers · asked by Anonymous in Physics

2007-12-14 08:48:54 · 17 answers · asked by Jerry 2 in Astronomy & Space

please answer need it for school cant find it anywhere

2007-12-14 08:43:26 · 2 answers · asked by Anonymous in Geography

2007-12-14 08:41:12 · 2 answers · asked by bluekiwi 2 in Physics

please answer need it for school i cant find it anywhere else

2007-12-14 08:40:01 · 2 answers · asked by Anonymous in Geography

please make the answer simple as possible its for a k - 9th grade book

2007-12-14 08:38:03 · 2 answers · asked by Anonymous in Biology

when someone told me this, i made fun of her for being so absurd saying that!!!! that's impossible.

is it true???

2007-12-14 08:35:12 · 12 answers · asked by Evaの 6 in Astronomy & Space

I have two questions that I can't figure out and if you would explain how to do them that would be great!

1. A person wants to make an enclosed play pen using 60 meters of fence. One of the sides is against the house (thus, not requiring any fencing). What are the dimensions of the play pen to get the maximum area?

2. A boat can go 12 mph in calm water. If the boat goes down a river 45 miles and back up the river 45 miles it takes him 8 hours. What is the current of the river?

Thanks in advance!

2007-12-14 08:33:42 · 3 answers · asked by Anonymous in Mathematics

pounding (like an explotion) and pounding again (like an implotion). We are just the size of an bacteria on/in its matter.
And yet we seem to think we know all.....! sigh !

2007-12-14 08:29:23 · 9 answers · asked by ullis 4 in Astronomy & Space

2007-12-14 08:27:11 · 13 answers · asked by Anonymous in Astronomy & Space

I can't get the concept intended in my lesson for school.

Here it is:

1146 joules of heat is released when a 100.0 gram sample of an unknown metal cools from 95.00°C to 65.00°C. Determine the specific heat of a metal.

Please explain what you did, so I can get it!

Thank You in advance!

2007-12-14 08:25:31 · 6 answers · asked by A Firefighter 2 in Chemistry

Oil tankers...Like the Exon valdis... bad example but you get the picture. when full of fuel (oil diesel petrol whatever) does it sit higher in the water acording to the pimsole line. I mean 50,000 tons of cargo that is lighter than water ?
No reason for the question just curious.

2007-12-14 08:24:10 · 6 answers · asked by Anonymous in Engineering

2007-12-14 08:17:46 · 7 answers · asked by dmlgnnv 2 in Astronomy & Space

Is the zero-gravity caused by the free-fall of the airplane or because the airplane leaves the troposphere?

2007-12-14 08:16:43 · 4 answers · asked by eyeless 1 in Astronomy & Space

Which of the following substances would have the highest melting points?

BF ( F sub 3)
NaF
H (sub 2) O
HF

Which one of the following substances would likly be the best conductor of electricity in the pure liquid state?

Br (sub 2)
PCl (Cl sub 2)
BaF (F sub 2)
CH ( H sub 4)
H (sub 2) O

Thanks in advance!

2007-12-14 08:15:26 · 1 answers · asked by C-B 2 in Chemistry

We're told we're going to get six inches of snow in the next 24 hours. That means we'll either get ten, or a mere dusting. What goes into predicting the weather, and why haven't we learned to be more accurate with advancing technologies, better understanding, etc?

2007-12-14 08:14:32 · 5 answers · asked by Scotty Doesnt Know 7 in Weather

[NOTE: the numbers in this problem are unrealistic, but are more simple to work with than a more realistic situation would be.]

When two masses, Mass A and Mass B, are 1.0 m apart, they exert a gravitational force of 1 N on each other. If Mass B is replaced by Mass C which is 200 times greater than Mass B, what will be the gravitational force between Mass A and Mass C?



Remember the equation Fgrav = (mass 1 ) (mass 2)

distance2



(For this problem Mass A = 1 kg, Mass B = 1 kg, Mass C = 200 kg)

Be sure you show how you arrived at your response

2007-12-14 08:13:51 · 3 answers · asked by Anonymous in Physics

I need help with my math homework...I don't want the answers, I just want steps on how to do it.

Sue paid $60 for a jacket that was on sale for 25% off the original price. What was the original price of the jacket?

Jan hiked a 50-mile trail in 3 days. The first day, she hiked 50% of the total distance. The second day, she hiked 25% of the distance that remained. How many miles did she hike the thrid day?

I tried doing both and I couldn't get them. Can someone help? Thanks!

2007-12-14 08:11:58 · 5 answers · asked by Anonymous in Mathematics

don't say the pictures on tv.you have to be able to see it from allits sides like 360 degrees.also what is 4D.and don't say 4D is when you feel it becuz Disneys explanation 4D is not correct

2007-12-14 08:10:58 · 9 answers · asked by Anonymous in Geography

and then what is.................?

2007-12-14 08:07:15 · 9 answers · asked by ullis 4 in Astronomy & Space