Science & Mathematics - 4 July 2007

If you have a rectangular cake with a rectangular void placed randomly in the cake, how do you slice the cake with one cut so that the two slices are equal volume?

2007-07-04 17:57:48 · 7 answers · asked by Anonymous in Mathematics

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(3√x) / (2√x-√y)?

Simplify after performing indicated operations.

2007-07-04 17:56:03 · 3 answers · asked by austinm08 2 in Mathematics

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there are two sets of numbers... A={1,2,3,4,5} , B={4,5,6,7}?

what is A (inverted U) B=

and

what is A U B=

2007-07-04 17:52:22 · 6 answers · asked by gfgfd g 1 in Mathematics

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Electricity question: Is there such a thing as this?

Okay...
Electricity moves through objects or from one object to the other, so it's sort of 'outward' in that manner, right?

So here's the question:
Is there such a thing that PULLS electricity towards it?

(I don't mean "ATTRACT", that would just mean supplying the electricity a pathway through continuous conductivity.
I mean "PULL")

You see, I was thinking this: Many people suffer prolonged muscle spasms.
Electricity is often used (especially in therapy) to stimulate muscular movement through contractions, much like spasms.
Now, IF it were possible to suck out/ pull/ extract the accumulated bio-electricity in a given part of the body, then THEORETICALLY the spasm or muscular contraction could be undone.

So... about my question: Is there such a device or 'phenomena' that pulls electricity?

2007-07-04 17:48:20 · 9 answers · asked by Anonymous in Engineering

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Homework Help!?

2x + 2,450 - (2y - 8) = 10

Can anyone solve this problem?

2007-07-04 17:43:39 · 5 answers · asked by Anonymous in Mathematics

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how do you levitate objects?

iv doen research and found out that you cannot have alot of vitamin E in your brain and also you must have alot ofiron running in your blood stream i guess around your head but how do you levitate objects if you do answer tell me wether or not you have levitated anything.

2007-07-04 17:40:06 · 4 answers · asked by Jordan112010 1 in Biology

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Will silver hydroxide dissolve in excess NaOH(aq) or NH3(aq)?

2007-07-04 17:32:47 · 3 answers · asked by formystudies6 1 in Chemistry

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Population mean or sample mean???

So I have test scores (from our most recent test) from all of the students in my class. I have been asked to find the mean and standard deviation of this data, which I have done. My question is, would the mean of this data be considered a population mean or sample mean? Can it be argued both ways?

2007-07-04 17:31:19 · 4 answers · asked by Anonymous in Mathematics

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how did the universe came to exist, how was it created?

2007-07-04 17:19:33 · 10 answers · asked by shesh 2 in Astronomy & Space

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what causes deserts to grow if dirt doesn't change to sand?

2007-07-04 17:16:27 · 7 answers · asked by ˈsi-vəl-man 4 in Earth Sciences & Geology

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for how many positive integer values of N less than 100 is (N/5) an even integer and (N/4) an odd integer?

2007-07-04 17:14:31 · 3 answers · asked by Anonymous in Mathematics

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saline used for making red cell suspension/washing antiglobulin tests is ph 5.0.What impact on testing?

2007-07-04 16:59:35 · 2 answers · asked by lil_krisha 1 in Medicine

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how much carbon dioxide does a tree absorb?

2007-07-04 16:54:36 · 5 answers · asked by Anonymous in Other - Science

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algebra help?

how to solve using the quadratic formula
6x^2 - 4x - 1 = 0

2007-07-04 16:44:06 · 5 answers · asked by uyenkn 1 in Mathematics

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What does it mean to "cut" heroin?

I'm watching Monk and they were talking about it and I was just wondering...

2007-07-04 16:43:52 · 5 answers · asked by jamie68117 3 in Medicine

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Why doesn't anyone seem concerned with the fact that someday the sun will burn out?

I saw a TV program the other day that went into great detail of what would happen to our planet when the sun changes stages and eventually dies off... why is nobody concerned with this? Just because you will not live to see it does not mean you shouldn't slowly work towards a solution… at least for future generations. I heard an astronomer laugh and say "We have 5 billion years to prepare for this"... this is no laughing matter to me.

2007-07-04 16:39:33 · 14 answers · asked by Anonymous in Astronomy & Space

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Why is the SUN always is yellow colour?

2007-07-04 16:31:06 · 6 answers · asked by annie 1 in Astronomy & Space

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Heavy rain tonight and smoke coming from outdoor lampost light, is it the heavy rain meeting the glass?

looked outside and saw this and wondered if it was a fire hazzard. rain subsided and smoke lessened. any thoughts? thx

2007-07-04 16:24:10 · 5 answers · asked by joseph_nh_2006 1 in Weather

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Clairvoyant help?

I'm looking for a clairvoyant who's name is rosemary. She comes out in the discovery channel at night sometimes. i need to know a way of contacting her. i have a problem about a death i need to figure out. or if anyone else knows of someone i can call to help me. PLEASE!

2007-07-04 16:16:35 · 5 answers · asked by We're Not Bouncy Balls!! 3 in Parapsychology

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Tears is it good and how it cleans our eyes?

2007-07-04 16:15:06 · 3 answers · asked by ruuuu 4 in Other - Science

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How do you solve this calculus problem? Please show all your steps?

The path of a particle follows the expression x^2 - y^2=1. Find the position of the point on this path that is closest to the point A(0,2).

2007-07-04 16:12:33 · 2 answers · asked by Shaina B 1 in Mathematics

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a truck`s gas tank is 1/4 full. after 15 gallons of gas are added, the tank is 7/8 full. what is the gallon?

a truck`s gas tank is 1/4 full. after 15 gallons of gas are added, the tank is 7/8 full. what is the gallon capacity of the gas tank?

2007-07-04 16:10:24 · 6 answers · asked by Anonymous in Mathematics