Science & Mathematics - 9 January 2007

2007-01-09 14:25:33 · 7 answers · asked by sam w 1 in Zoology

Not just to get answers but to help you understand the work you are doing. Somewhere that shows you step by step how to complete a problem.

2007-01-09 14:25:15 · 4 answers · asked by Anonymous in Mathematics

it can right, because until it reaches abosolute zero, it has the potential to keep getting colder

2007-01-09 14:23:29 · 8 answers · asked by Anonymous in Chemistry

what science fair project can i do with coke? simply and easy fast

2007-01-09 14:23:21 · 7 answers · asked by Anonymous in Other - Science

A x B + C / D = 2, A + B x C - D = 15, A + B x C / D = ?
Find the value of ?. You must apply the operands in order they are written.

2007-01-09 14:22:18 · 4 answers · asked by auntyfaye 1 in Mathematics

How do i show that
i. The inverse of T carrying R(T) into D(T) exists if and only if
Tx =0 implies that x=0.
ii. If the inverse eists then it is a linear operator
iii. If the dimension of D(T)=n < infinity and the inverse of T exists then the dimension of R(T)=dimension of D(T).

2007-01-09 14:21:16 · 1 answers · asked by temmy_teeapril 1 in Mathematics

2007-01-09 14:20:55 · 12 answers · asked by jocy 1 in Astronomy & Space

A person with mass of 25 kg on a trampoline jumps up and lands. If the person's height was 3 meters and after landing on the trampoline he continues down for another 1 meter before coming to a stop. What was the force exerted by the trampoline on the person?

2007-01-09 14:20:07 · 2 answers · asked by Anonymous in Physics

Why?

2007-01-09 14:19:29 · 3 answers · asked by Steenskees 2 in Biology

need to write as to colum with statement and reasons

***NOTE < is the angle sign.

Given:
< 1 is a supplement of < 2
<3 is a supplement of < 4
m < 2 = m < 4

Prove:
m<1 = m<3

was told there were eight steps

2007-01-09 14:19:23 · 4 answers · asked by brighton 3 in Mathematics

I`m doing a project for my physics/chemistry class for a mousetrap car..It`s supposed to be simple, since we`re only in middle school, and I can`t use any manufactured items (like Toy car wheels, lego wheels, etc.) or I`m just allowed to use things that I can find in my drawer or around the house.
Does anyone have any tips? Or help how to build a good one? o_o; All I have is a mousetrap..It needs to go at least 1-2m, have the body shape larger than the trap, and added material to produce traction to all wheels. :x

Please help? ^^;

Pictures do help as well, but I already skimmed through a lot of websites I looked up on Google/Yahoo...

Thank you. :D

2007-01-09 14:18:58 · 2 answers · asked by 2514 2 in Engineering

Four point masses of 3.0 kg each are arranged in square on massless rods. The length of a side of the square is 0.50 m. what is the rotational inertia about an axis.
a) passing through masses B and C?
A______B
| the sides are 0.50m
D______C
b) Passing through masses A and C? Diaganal
A_____B
| |
D_____C
c) passing through the center of the square and perpendicular to the plane of the square?
A------B
| . |
| | side is .50m
D------C there is a spot in the middle of the square

Show me how you find the answere step by step
I have a lot of problems like this one so I need to know how you find the answer thanks

2007-01-09 14:18:56 · 1 answers · asked by collegegirl 2 in Physics

do you support a genetic varence breeding wherein in 30 years, chimps could be intellenge enough to speak and think 1000% more so today? and be another species of man?

2007-01-09 14:18:42 · 8 answers · asked by Anonymous in Biology

If the earth changed directions (spinning on its axis) would the toilets change direction (when you flush them) from counterclock-wise to clock wise or vies versa (depending on hemisphere north or south)? (yes or no and perferably why)

2007-01-09 14:18:05 · 8 answers · asked by FowlFirehead314 1 in Earth Sciences & Geology

The polar star define the North

2007-01-09 14:17:22 · 2 answers · asked by Anonymous in Geography

Just putting forth a question, and asking for thoughts, ideas, theories, possibilities. Forget the ufos, that's another subject. Religion, also another subject.

2007-01-09 14:17:21 · 9 answers · asked by TRAF 4 in Astronomy & Space

a brown eyed man whose father was brown eyed and whose mother was blue eyed married a blue eyed woman whose father and mother were bothe brown eyed. the couple has a blue eyed son.

2007-01-09 14:16:31 · 3 answers · asked by smile 1 in Biology

2007-01-09 14:16:27 · 4 answers · asked by Brian S 1 in Mathematics

Across
5)the nonparallel opposite sides are the ______ of an isosceles trapezoid are congruent.
9)A quadrilateral with exactly one pair of parallel sides whose nonparallel sides are congruent
11) the non parallel sides of a trapezoid
13)the perpendicular distance from the center of a regular polygon to a side is called the ______.
15)in a parallelogram, opposite angles and _________ are congruent.
18) a quadrilateral with both pairs of opposite sides parallel
21)A_________is a segment that contains the center of a circle and has both endpoints on the circle.
25)this is a fraction of a circles circumference.
26)A_______is an angle whose vertex is the center of the circle
29)Angles in a polygon that share a side

Down
7) opposite angles of a parallelogram are ______.
17) The_______ of a rectangle are congruent.
19) A ________ of a circle is a part of a circle bounded by an arc and the segment joins its endpoints.
20) A______is half of a circle
22) The diagonals of a kite are____.
THANKS

2007-01-09 14:14:46 · 3 answers · asked by Travis L 1 in Geography

49% of a population can't taste a chemical called pTC. Presence of a dominant allele is necessary to taste this substance. Using this information, complete the following information about the gene pool of the population.

2007-01-09 14:13:23 · 3 answers · asked by hellokid 1 in Biology

2007-01-09 14:12:57 · 4 answers · asked by girlSTFU_ 1 in Mathematics

square root of 19 divided by square root of 40 ?
square root of 13 divided by square root of 5 ?
square root of 7 to the 4th power divided by square root of 12 to the 4th power?

please show the steps to getting the answers

2007-01-09 14:12:54 · 3 answers · asked by skittle8788 3 in Mathematics

How do i know exactly if i need Tootering?

2007-01-09 14:12:27 · 5 answers · asked by Kasin W 2 in Mathematics

2007-01-09 14:12:22 · 3 answers · asked by R. 1 in Medicine

Does anyone happen to know the name of a geometric theorem that states that a polygon with 5 or more sides cannot be equiangular without being a regular polygon. If so so do you know of a website with this information on it so i can cite it. Any help will be greatly appreciated. Thanks a lot

2007-01-09 14:11:54 · 2 answers · asked by Anonymous in Mathematics

im in need of a good and easy science project. ive been searching and thinking for weeks and all i could come up with is "how pulleys work" if anyone can give me a hand, it would be much apreciated.

2007-01-09 14:11:30 · 3 answers · asked by Alvin A 1 in Other - Science

Is there a general formula for mica?

2007-01-09 14:11:07 · 5 answers · asked by Gideon 1 in Earth Sciences & Geology

2007-01-09 14:10:25 · 4 answers · asked by ^_^ 1 in Physics

Prove:
1+4+7+...+(3n-2)=1/2n(3n-1)

Assume for some K
1+4+7+...+(3k-2)=1/2k(3k-1)

Show true for K+1
???????????????

2007-01-09 14:10:19 · 4 answers · asked by Hamza 1 in Mathematics

I found this pill today and I am concerned as to what it is as I don't know where it came from.

It is a thicker round (Cylindrical shape) pill yellow in color (like a canary yellow). The pill it's self is not fully yellow, it is a coating over the pill. There is no numbers on the pill at all, but on both sides there is a Uppercase V.
It was found in my car, and since I only usually drive with children, I thought it was candy, but since I have never seen a candy like it, I put my tounge to it to check and it had a bitter medicine taste.

If anyone knows anything about this, or where I can find out what it is, please let me know.

Thank you for any help you can provide me with!
~Kelly

2007-01-09 14:09:43 · 4 answers · asked by Kelly 3 in Medicine