Science & Mathematics - 26 November 2006

the distance from those two cities from the equator is about the same but the weather in SF is is from the 50-70's throughout the whole year.

i live in DC and i hate that the winters are really cold and the summers are really hot and humid. i'm so jealous.

2006-11-26 13:28:58 · 7 answers · asked by tom l 3 in Weather

will the humming bird stay in the same place? or will the plane move around it?

(if you're having a hard time imagining it, imagine a humming bird hovering next to you're seat. the plane begins to move forward...does the humming bird stay next to you? or does it move backwards due to the fact that the plane is moving forward)

2006-11-26 13:27:56 · 14 answers · asked by Anonymous in Physics

1.) Auto registration costs 1% of the current value of the car. Auto registration cost is a function of the value of the car.
2.) The value of a sphere is a functions of a radius. Volume is 4/3pi times the cube of the radius.

Somebody help me this , i have my ans. but i want to compare .

2006-11-26 13:27:42 · 2 answers · asked by Anonymous in Mathematics

I am doing a report on this. Where can I find reputable information on this subject, on the internet or otherwise?

Thanks.

2006-11-26 13:26:45 · 3 answers · asked by tallahasseeman 1 in Weather

a-pigeons eat stones and dirt
b-pigeons use the magnetic particles to attract mates
c-pigeons find their food using particles
d-they use it like a compass

2006-11-26 13:26:33 · 2 answers · asked by Da badest chic yu'll eva meet! 2 in Biology

Find the points on the curve y = 2 - 1/X where the tangent is perpendicular to the line y = 1 - 4x.

2006-11-26 13:24:47 · 3 answers · asked by Shane S 1 in Mathematics

2006-11-26 13:24:43 · 4 answers · asked by Edward S 1 in Mathematics

i have seen cockroaches survive as long as five minutes in the microwave... why dont they get cooked?

2006-11-26 13:24:41 · 11 answers · asked by luckily77777 2 in Zoology

I was wondering how often in the history of North America/United States/South Central region has a heavy winter followed an unusually warm autumn. By heavy winter I mean more than 2 significant snowfalls of 6 inches or more and within the months of December through March.

2006-11-26 13:24:12 · 1 answers · asked by angela_brown74 1 in Weather

For me it is not undefined.

2006-11-26 13:23:33 · 7 answers · asked by Goddess of the Moon 3 in Mathematics

32 is _% of 64
88 is _% of 80
3/8 is _% of 3/4
18 3/4 _%of 75
50 is _% of 80
2/3 _% of 5/6
78 _%of 104
.72 _% of .48
8 1/3 is _% of 33 1/3
6 1/4 _% of 50
40 is _% of 50
67 is _% of 67
.8 is _% 3.2
96 is _% of 120
1.6 is _% of 6.4
19 is _% of 76
19 is _% of 95
24 is _% of 40
64 is _% of 80
.69 is _% 2.76

2006-11-26 13:23:32 · 5 answers · asked by kisser_up 1 in Mathematics

2006-11-26 13:23:21 · 3 answers · asked by Anonymous in Medicine

2006-11-26 13:22:03 · 14 answers · asked by Anonymous in Mathematics

ok i need help using matrices to solve this system of equations
please try to show work as i pretty much thought i knew this but aparently i dont

2.7x - 3.5y=13.35
6.3x + 4y= 12.9

omg this stuff sucks.

2006-11-26 13:21:46 · 2 answers · asked by Anonymous in Mathematics

i type in a number on the amp side and it will tell me how many volts it is

2006-11-26 13:18:43 · 5 answers · asked by Wesley!!! 3 in Engineering

2006-11-26 13:18:33 · 8 answers · asked by brytexgaelyn 2 in Physics

What number am I ?

2006-11-26 13:17:21 · 4 answers · asked by Anonymous in Mathematics

2006-11-26 13:14:47 · 10 answers · asked by antonie c 1 in Chemistry

Two towers are each 150 feet high and 100 feet apart. Chris is standing atop one tower and is about to drop a ball straight down. A fishing line is attached to the ball and the other end of the line is attached to a fishing reel that Blaire is holding on the top of the other tower so the line can unroll as the ball falls. The ball will fall 16t^2 feet in the first t seconds after it is dropped. How fast is the string unwinding after 3 seconds? (Assume that the bowling ball and the fishing reel are each 150 feet above the ground when the ball is dropped and that the fishing line is taut at all times.) Be descriptive and clear please I want to learn.

2006-11-26 13:13:36 · 3 answers · asked by Sara L 1 in Mathematics

containing 10.0g of each of the following in a 1.0 L solution:
a) H2SO4
Thks

2006-11-26 13:13:07 · 2 answers · asked by dandanthecranman 3 in Chemistry

2006-11-26 13:12:44 · 2 answers · asked by antonie c 1 in Chemistry

2006-11-26 13:12:38 · 3 answers · asked by leadominguez04 1 in Mathematics

Simplify this for me.

2x(2x^2y)^3(3xy^4)^2
In word form
2x (times 2x to the 2nd y) to the 3rd(times 3xyto the 4th) to the 2nd.

2006-11-26 13:11:40 · 2 answers · asked by Anonymous in Mathematics

2006-11-26 13:10:16 · 3 answers · asked by Anonymous in Chemistry

I have a few questions

1.A person starting with $256 makes eight bets and wins exactly four times. The wins and losses occur in random order. if each wager is for half the moey she has at the time of the bet, how much will she win or lose?

2.How many four-digit positive integers divisible by 7 have the property that, when the first and last digits are interchanged, the result is a (not necessarily four-digit) positive integer divisible by 7?

3. Each day chris is chided for not cleaning up his room, so he picks up approx. 10% of the items on the floor in the morning. (he always rounds off to the nearest whole number if his calculations result in a fraction.) each day, ten new items somehow end up on the floor. If he has a clean flooron Sunday morning, how many items will be on the floor on Saturday night?

4. Each spring 12 meter x 12 meter graden has its length increased by 2 meters but its width decreased by 50cm. What will be the max. attainable area of the garden?

2006-11-26 13:09:14 · 6 answers · asked by Anonymous in Mathematics

anyone? anyone at all?

2006-11-26 13:08:41 · 3 answers · asked by lilotata93 4 in Earth Sciences & Geology

2006-11-26 13:08:15 · 4 answers · asked by Anonymous in Chemistry

A 0.3 kg block attached to a spring of force constant 10.8 N/m oscillates with an amplitude of 17 cm.

1) Find the maximum speed of the block in m/s

2) Find the speed of the block when it is 8.5 cm from the equilibrum position in units of m/s.

3) FInd its acceleartion at 8.5 cm from the equilibrium position in units of m/s^2.

4) Find the time it takes the block to move from x=0 to x=8.5 cm in units of s.

2006-11-26 13:06:59 · 2 answers · asked by Mariska 2 in Physics

How does the law of multiple proportions relate the law of definite proportions?

2006-11-26 13:06:16 · 1 answers · asked by Anonymous in Chemistry

Newton's Root Finding Method:
x1=x0-(f(x0)/f'(x0)
x2=x1-(f(x0)/f'(x0)
xn=x{n-1}-(f(x{x-1})/f'(x{x-1})
The "1" "2" "n" "n-1" are subscripts.

1. Use newton's method to appproximate the value of square root of 6. Perform 4 iterations to find your approximate answer.

I tried to do that, but im not sure what # to start x0 at! Should it be higher or lower?

2.wat is approximate error between actual value and approximated value at x4?

3. Use newtons method to approximate the root of the function for 4 itterations:
f(x)=e^(3x+2)-x^2
x0=0
Whats f(x4)=?

Not sure how to do this, i ran into problems with alegebra. I cannot do x2 for some reason.

5. Which method is more effective? Bisection method or Newtons' root finding method?

I have no clue which is bettter, maybe you guys can tell why with facts.

2006-11-26 13:04:37 · 2 answers · asked by n/a n 1 in Mathematics