Science & Mathematics - 20 November 2006

which severe storm lasts the longest? hurricanes,tornadoes,blizzards,thunderstorms
and why?

2006-11-20 14:22:29 · 4 answers · asked by Uperson 2 in Weather

I am upset that I got 4 wrong on my test today (92%) and I basically knew everything about cellular respiration to start out with but I can't seem to get that elusive grade. Please help me with some advise. I can't get an "A" in the course because the teacher keeps on taking away points for random reasons....

Here's my past results:

1st test- 78% 2nd highest
2nd test- 87% highest
3rd test- 82% highest
4th test- 88% tie-highest
5th test- 100%- highest
6th test- 92%- highest

2006-11-20 14:21:53 · 10 answers · asked by ibid 3 in Biology

i performed a formula to see how much volts and amps a capacitor discharges in each millisecond and the question is if i did it right the capacitor had 150uf and the battery that charged it had 1.5v and 5.0a and i even made a chart of the results so did i do it right?
(note: the letters along the bottom are the milliseconds and the ones along the left side are the measurements)

both are based on these formulas
V=v(e^t/T)
the instantanious voltage is equal to the initial voltage times exponent to the power of time over tau

I=i(e^t/T)
the instantanious current is equal to the initial current times exponent to the power of time over tau

heres a link to the chart
http://img100.imageshack.us/img100/6939/capacitordischargews3.jpg

2006-11-20 14:19:44 · 1 answers · asked by macgyver 1 in Engineering

2006-11-20 14:19:08 · 2 answers · asked by Morgan S 2 in Geography

1. Which whole numbers, greater than 1, divide evenly into all of the nine 3-digit numbers:

111, 222, 333, 444 ...... 999 ?



2. how many odd numbers less than 500 are exactly divisible by 7 ?



3. what is the smallest number which, when divided by 3,4,5 or 6, always leaves a remainder of 1 ?

2006-11-20 14:19:01 · 3 answers · asked by Anonymous in Mathematics

2006-11-20 14:18:30 · 7 answers · asked by Al3x_Dogg 2 in Other - Science

Algebra homework problem. Plese HELP!!!

2006-11-20 14:17:05 · 8 answers · asked by mandy1992@verizon.net 1 in Mathematics

OK, what if a pair of twin brothers married a pair of twin sisters at the same time. Then both of the couples have a child. If that child is the same gender for both couples, will those children be twins?

2006-11-20 14:13:14 · 8 answers · asked by Anonymous in Biology

do sharks eat jellyfish too?

2006-11-20 14:12:09 · 8 answers · asked by skippy 1 in Zoology

2006-11-20 14:11:29 · 3 answers · asked by jaynaee1990 1 in Mathematics

sodium phosphate reacts with calcium nitrate to produce sodium nitrate plus calcium phosphate

2006-11-20 14:10:58 · 3 answers · asked by hilary 2 in Chemistry

2006-11-20 14:09:10 · 3 answers · asked by Anonymous in Biology

I saw a honey badger on animal planet actually fending off a full-grown leapord to protect its kill.The thing has guts to admire.

2006-11-20 13:59:47 · 6 answers · asked by jkuraah 1 in Zoology

something with lots of 0's.

2006-11-20 13:59:15 · 19 answers · asked by Dudley Kerr 1 in Mathematics

arent all human brains the same size??

2006-11-20 13:58:29 · 23 answers · asked by chomp_chomp 2 in Other - Science

2006-11-20 13:57:41 · 4 answers · asked by ninogrk 1 in Chemistry

2006-11-20 13:56:47 · 8 answers · asked by fatima_hassanien 1 in Physics

2006-11-20 13:56:21 · 1 answers · asked by jaqualine r 2 in Weather

Lithium metal is burned in air.

gaseous hydrofluoric acid (HF) reacts with solid silicon dioxide.

and potassium dichromate added to acidified solution of sodium sulfite?

these are so tricky, i cant predict the correct answer.

2006-11-20 13:55:41 · 3 answers · asked by Anonymous in Chemistry

1. An open box is formed by a rectangular sheet of cardboard by cutting equal squares from each corner and folding up the edges. If the dimensions of the carboard are 15 inches by 24 inches, what size squres should be cut out to obtain a box of maximum volume?

2. Suppose a rectangle has it lovwer base on the x-axis and upper vertices on the graph of the function y=8-x^2. Find the area of the largest such rectangle.

2006-11-20 13:55:01 · 3 answers · asked by Anonymous in Mathematics

Help I need to solve Sin 2y = Cos 4Y for y where 0 < y < 360 Unfortunatly I have no idea where to start... help!

2006-11-20 13:54:52 · 4 answers · asked by gg 4 in Mathematics

does this mean the TALLEST part(the length) is 22 and the FATTEST part (the width) is 14? is this correct?

2006-11-20 13:54:47 · 3 answers · asked by primetime0309 1 in Mathematics

how do you find csc(3pi/4) i cant do it T.T forgot how

2006-11-20 13:53:53 · 6 answers · asked by Anonymous in Mathematics

A gardener pushes a 18 kg lawnmower whose handle is tilted up 35° above horizontal. The lawnmower's coefficient of rolling friction is 0.15. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4 m/s?

Any thoughts?


Thanks!
Any suggestions?

2006-11-20 13:52:12 · 3 answers · asked by Anonymous in Physics

i know how to do everything except the most important part, when you start to acutally balance the equation like multiplying to the compounds. whenever i try to balance out one, the others become unbalanced again and i keep going back and forth and it never becomes balanced! please help! :(

ps if this doesnt make sense or if i can provide a sample problem, please let me know and i will do it.

2006-11-20 13:51:59 · 4 answers · asked by ... 3 in Chemistry

A 20 kg box was given a push and is sliding along a table with a coefficient of friction of 0.4.



What is the net force acting on the box?

What is the acceleration of the box?


please help!! thank you .

2006-11-20 13:51:21 · 4 answers · asked by lex 1 in Physics

Problem 1: Find an equation for the line with y-intercept 3 that is perpendicular to the line y=2/3x-4. & Problem 2: If P(4,-5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6). & Problem 3: The polynomial f(x) divided x-3 results in a quotient of x^2+3x-5 with a remainder of 2. Find f(3).

2006-11-20 13:51:00 · 6 answers · asked by Anonymous in Mathematics

2006-11-20 13:50:50 · 3 answers · asked by fball_stud24 1 in Biology

2006-11-20 13:48:35 · 25 answers · asked by jaynaee1990 1 in Mathematics

Lim (x+ x^2 + x^3 +... + x^n - n)/x-1 when x ---> 1 (tell more!)
Lim ((x^3)*Sin(1/x))/(1-cos(x)) when x ---> 0
Lim xtan(x) - (p/2)*Sec(x) when x ---> p/2
Lim (Sin^4(x))/ (4 - Cos(1-cos(x))) when x ---> 0
Lim (1-(x^2))/sin(px) when x --- > 1

2006-11-20 13:47:58 · 4 answers · asked by Arman Hassanpour 1 in Mathematics