Science & Mathematics - 20 December 2007

I left my apple in my purse which i left in my classroom which i can't get into b/c I have a 2 week x-mas break. will it get moldy? My city is like 80 degrees

2007-12-20 11:44:42 · 2 answers · asked by I_luv_the_ozone_layer 1 in Agriculture

I heard people say that emotional tears are poisonous. Is that true?

2007-12-20 11:38:32 · 4 answers · asked by HUSKY 1 in Other - Science

2007-12-20 11:33:35 · 1 answers · asked by rltturner 1 in Earth Sciences & Geology

How hot would you have to make a surface to keep it from freezing and reverse any freezing on it?

PLEASE HELP

My guess is 36-38 degrees fharenheit, but I don't know if thats right.

2007-12-20 11:32:20 · 1 answers · asked by Anonymous in Engineering

I need help on a problem. It is √3y+10 - 2 = y

If you cant tell the square root covers the 3y+10 and then you subtract two, and its equal to y......i really need help on this one.....

2007-12-20 11:32:06 · 2 answers · asked by Anonymous in Mathematics

The width of a rectangle is 4 m less than one third of the length. If the perimeter of the rectangle is 56 m, find the dimensions of the rectangle.

1 m = 100 cm

2007-12-20 11:19:58 · 10 answers · asked by Anonymous in Mathematics

y"-8y'+16y=0, y(0)=0,y'(0)=1 Ahhh!

2007-12-20 11:19:02 · 3 answers · asked by dtsairman 3 in Mathematics

PLEASE HELP me , this has to do with the cell cycle

1) the s in the sequence represents the phase in which _________ _______ occurs.

2)each individual protein structure that helps to move the chromosomes apart during mitosis is called a (n) _______________


THANKS

2007-12-20 11:17:49 · 2 answers · asked by sweethoney9079 4 in Biology

1. 3x - 4y = 7
2x + 4y = 8
(1,2)
(1,-1)
(2,4)
(3, 0.5)

2. 5m + 3n=22
5m+ 6n=34
(1,2)
(1,-1
(2,4)
(3, 0.5)

2007-12-20 11:16:23 · 4 answers · asked by Anonymous in Mathematics

the equation of two sides of a triangle PQR are y-3x+6=0 and 3y-4x-2=0. D is the foot of the perpendicular from P to QR and the coordinates of D are (0, 4). find the equation of QR.

please explain .. thanx alot

the answer is 2x+y-4=0.. but please show me how u get it.. thanx

2007-12-20 11:15:32 · 2 answers · asked by Anonymous in Mathematics

2007-12-20 11:15:25 · 5 answers · asked by Anonymous in Biology

I bet you're wondering what the hell are wolves doing chasing someone in the big city?


I wondered that as well. All I know is I need wolf repellent!Help me!

2007-12-20 11:13:51 · 11 answers · asked by Anonymous in Zoology

a median in an isosceles triangle is also a perpendicular bisector correct? only the one that is from the vertex, that connects the two congruent sides, to the opposite side

2007-12-20 11:11:44 · 12 answers · asked by roger 1 in Mathematics

What evidence can be / has been presented that determines the Milky Way and other galaxies are stationary objects in space?

2007-12-20 11:10:28 · 8 answers · asked by hill_0759 1 in Astronomy & Space

i have an 80 in algebra and i need it to stay at a B. Our final counts as 15% what do i atleast need to make to keep my grade the same?

2007-12-20 11:09:17 · 13 answers · asked by kellyissohot346 1 in Mathematics

Would it be very difficult for NASA to recreate Apollo 11 exactly the same way it was done in 1969 today?
I heard that we no longer have the capibility to go to the moon.

2007-12-20 11:07:05 · 13 answers · asked by Anonymous in Astronomy & Space

i know it makes up our muscles hair and skin...but i need more info for my essay.

2007-12-20 11:05:18 · 4 answers · asked by samantha 2 in Biology

does not have life-threatening diseases? Life altering diseases (down's syndrome)? Mild genetic diseases (color blindness)? societal setbacks (low IQ)? If one is OK where do u draw the line?

2007-12-20 11:04:45 · 2 answers · asked by Anonymous in Biology

Is an atmosphere required?

2007-12-20 11:02:48 · 6 answers · asked by Thomas E 7 in Astronomy & Space

PLEASE HELP me CAN u at LEAST help me with 3 or as much as u want

1) As a cell prepares to divide , a DNA molecule and its associated proteins coil to from a _______

2. what is the number of chromosomes found in a human body cell?

3. bacteria reproduce thorough an asexual process called _________

4.in plant cell , cytokinesis requires the formation of a new ____________

5. the 22 pairs of chromosomes in human somitic cells that are the same in male and females are called________

6.each individual protein structure that helps to move the chromosomes apart during mitosis is called a (n)_______

7.What happens to the sturcture of DNA in your cells pior to cell division ?


THANKS

2007-12-20 11:01:44 · 2 answers · asked by sweethoney9079 4 in Biology

2007-12-20 11:01:33 · 4 answers · asked by Kimberly M 1 in Mathematics

a. true
b. false

2007-12-20 11:01:10 · 1 answers · asked by Anonymous in Biology

I have this electricity question in my exam:
"A manufacturing plant uses 2.1 MW of 220-V single phase power at a power factor of 0.8. Determine the apparent power and the effective, or rms, value of the current."
Getting the apparent power was simple, you just have to divide the true power by the power factor (which, in this case, gave you 2.625 MW), but I'm a bit confused as to the rms value.
To get the rms, you need the peak wave value (or the peak-to-peak value). I'm not sure how to get it. Could it be the amperage itself? Or maybe the voltage?

2007-12-20 11:00:54 · 4 answers · asked by Atomic Collision 2 in Engineering

I used a ouija board with some friends for a bit of fun, but was a bit reluctant. We asked to talk to a dead spirit and contacted one. He spelt out he was called Bill but then the pointer kept spelling out kill & kill over and over. We laughed & thought each other was trying to scare the other by moving the thing. Next day my brakes went on my car while on motorway, hit another car side on and got whiplash. Nearly died. Other guy in car broke his arm.
Then I found out my friend Steve was killed in accident at work, crushed by crane on building site. Nichola was hurt bad in bathroom, fell and hit artery in leg, blood everywhere. Last night I saw red face bleed out of wall and point at me, grinning. Called my mom but it had gone - I think I am next, what do I do? Anyone help me banish spirit before it is too late? I am really scared and scarred to sleep or do anything in case I die??

2007-12-20 11:00:43 · 23 answers · asked by Anonymous in Paranormal Phenomena

2007-12-20 10:59:48 · 6 answers · asked by Richard P 1 in Astronomy & Space

ok so in this scenario.... wat forces are involved and where?

ok so a boy whirls a block from directly above his head and releases it right when his arm is perpendicular to the ground....

ultimaltly i want to calculate the final velocity of the block as it leaves the boy's hand... but i want to make sure that i take all forces into account before calculating....

thank you

if anyone cod actually giv an answer with juss variables for specific values, it will b great...

thank you very much!

2007-12-20 10:58:45 · 2 answers · asked by quizzical 1 in Physics

Please help! My science final is tomorrow and I really want to do well on it!

Thanks so much, Happy Holidays!

2007-12-20 10:55:42 · 5 answers · asked by Anonymous in Geography

2007-12-20 10:54:30 · 4 answers · asked by Quatermass 2 in Astronomy & Space

Experts believe it may have well been the alignment of Venus & Jupiter which would have looked like a massive star on June 17, 2BC right around the estimated date of the birth of Christ (2BC). Has anyone heard any other theories or speculations on what created this star? Is the star real or mythical?

2007-12-20 10:53:07 · 6 answers · asked by ZORRO 3 in Astronomy & Space

a. true
b. false

2007-12-20 10:52:28 · 1 answers · asked by Anonymous in Biology