Science & Mathematics - 26 November 2007

2007-11-26 07:16:10 · 3 answers · asked by Alexander 6 in Astronomy & Space

I am doing this for my science fair project and i would like to know which of these are better remembered

2007-11-26 07:14:34 · 3 answers · asked by Anonymous in Engineering

2007-11-26 07:13:14 · 5 answers · asked by zb83b 2 in Chemistry

2007-11-26 07:11:26 · 2 answers · asked by AlienHallucination 2 in Mathematics

2007-11-26 07:06:00 · 4 answers · asked by Anonymous in Mathematics

1) What is the correct procedure to simplify the expression.
2n(5n-3)+8n
2) The first term in a sequence is 2, The second term in this sequence is 5 Each term after that is found by adding two immediately preceding terms what is the fifth term in the sequence?
3) What Equation represents a line that passes through the points (6,-3) and (4,2)?
4) On a map of Illinois the land distance from Moline to Rockford is 12 Cm The actual ladn distance from Monline to Rockford is Appox 90 Miles The land distance from moline to chicago on this same map is 20cm Which of the following is closest to the actual land distance from Moline to chicago? 54 Mi, 98Mi, 150 Mi, or 270 Mi?

Thanks for all of your help:)

2007-11-26 07:04:24 · 1 answers · asked by Xander 3 in Geography

a(y-b)=y

2007-11-26 07:04:09 · 6 answers · asked by Anonymous in Mathematics

i have to find the integral

S dx / (a^2 - x^2)^1/2

= S 1 / (a^2 - x^2)^1/2 dx

= S 1 / ((a+x)(a-x)^1/2) dx

this is as far as i have managed to take it.
where do i go from here?

2007-11-26 07:03:05 · 2 answers · asked by fpa06mr 5 in Mathematics

4. Imagine you are at a car dealership that has 1000 vehicles, all locked.
Suppose a salesperson goes along and unlocks every car.
Another salesperson then goes along and locks every other vehicle beginning with vehicle number 2 (yes, the vehicles are all numbered).
A third salesperson changes the state of every third vehicle beginning with vehicle number 3. (If the vehicle is locked the salesperson unlocks it, and if the vehicle is unlocked the salesperson locks it.)
A fourth salesperson changes the state of every fourth vehicle beginning with number 4.
Imagine that this continues until 1000 salespersons have followed the pattern with the 1000 vehicles. At the end, which vehicles will be locked and which vehicles will be unlocked? Which vehicles have been switched the most frequently? How many vehicles, and which ones, were touched exactly five times? Support all of your choices appropriately.

2007-11-26 07:01:24 · 1 answers · asked by Anonymous in Mathematics

sorry for my ignorance lol

im only in second seventh grade (lol)

2007-11-26 06:57:08 · 4 answers · asked by Panama 3 in Physics

log C = log P + µ log V

thanks

2007-11-26 06:56:37 · 6 answers · asked by Anonymous in Mathematics

2007-11-26 06:55:45 · 6 answers · asked by LouLou 4 in Astronomy & Space

N=N◦ eˉλt

the equations hard to write on a computer, its basically... N equals N with a little o down next to it. e to the power of minus lamda t

thanks

2007-11-26 06:54:21 · 2 answers · asked by Anonymous in Mathematics

The rancher had equal number of sheep and cows. When the rancher was asleep wolves slaughtered 1/3 of all sheep, and 1/6 of all cows.

The rancher counted that 60 animals were slaughtered.
How many sheep and cows has the rancher now?

2007-11-26 06:46:01 · 6 answers · asked by Alexander 6 in Mathematics

2007-11-26 06:44:56 · 19 answers · asked by connie b 1 in Other - Science

How are electric charges similar to magnetic poles? How are they different?

2007-11-26 06:43:26 · 2 answers · asked by Anonymous in Physics

(2x – 3)(3x + 4)

a 6x^2 + x + 1

b 6x^2 – x – 12

c 6x^2 + 17x + 12

d 6x^2 – x + 12



5. Simplify this expression.

3x(2x^2 – 3x + 1)

a –3x^2 + 3x

b 6x^2 – 6x

c 6x^3 – 9x^2 + 3x

d 6x^3 – 6x^2 + 3x



6. Simplify this expression.

2x^3 + 3x^2 – x^3 – x^2 – 1

a x^3 + 2x^2 – 1

b x^3 + 4x^2 – 1

c 2x^2 + x^2 – 1

d 3x^3 + 2x^2 – 1

2007-11-26 06:43:18 · 6 answers · asked by Anonymous in Mathematics

sin(3(pi symbol)/8)

2007-11-26 06:42:00 · 3 answers · asked by bruselee14 1 in Mathematics

a^1/a = b^1/b

2007-11-26 06:38:20 · 4 answers · asked by Anonymous in Mathematics

2007-11-26 06:37:34 · 19 answers · asked by STORMY K 3 in Physics

Can you help me explain this problem to a friend?

A box contains the following numbers {1,2,3,4,5,6,7,8}. You randomly choose one number. Find the probability that the number chosen is even or a multiple of 2.

2007-11-26 06:37:19 · 3 answers · asked by B H 3 in Mathematics

I'm trying to explain this to a friend. Can you help me?

Two cards are drawn without replacement from a standard deck of 52 cards. What is:

1. Probability 1st card drawn is a heart and the second card is also a heart?

2. Probability 1st card is a Jack and 2nd card is a five?

2007-11-26 06:36:12 · 4 answers · asked by B H 3 in Mathematics

What would happen if an extra base was inserted during DNA replication? How would that affect the amino acid Sequence?

2007-11-26 06:36:10 · 1 answers · asked by Abby M 1 in Biology

can anyone tell me how to contact a company that can send me a kit with complete guide of building the aircraft.??
or on the net how i can find anything about how i can build homemade aircraft??

please i am serious and i need it for my project in the university coz i am studying aviation engineering.

thanks in advance!

2007-11-26 06:32:51 · 6 answers · asked by a_afani87 1 in Engineering

Which process is most critical for different types of tree cells to develop?

a mitosis
b DNA replication
c sexual reproduction
d cell differentiation


5. When the seed of a tree first starts to grow, what would happen if the cells did not differentiate?

a Other cells would differentiate.
b All of the cells would be identical.
c The DNA would make new cells.
d The seed could form roots, but not leaves.

2007-11-26 06:25:47 · 2 answers · asked by wish on a star 1 in Biology

after i did the calculations i got 1-2i... can anyone see if this is right?

also, how do i put it into cartesian form?

2007-11-26 06:22:34 · 3 answers · asked by SK 1 in Mathematics

Which process is most critical for different types of tree cells to develop?

a mitosis
b DNA replication
c sexual reproduction
d cell differentiation


5. When the seed of a tree first starts to grow, what would happen if the cells did not differentiate?

a Other cells would differentiate.
b All of the cells would be identical.
c The DNA would make new cells.
d The seed could form roots, but not leaves.

. Which statement is true about cell differentiation?

a It happens in all cells.
b It causes cells to change and specialize.
c It produces identical cells.
d It happens during cell division.


2. Which order of events is correct?

a zygote → cell differentiation → mitosis
b mitosis → cell differentiation → stem cells
c stem cells → zygote → cell differentiation
d zygote → stem cells → cell differentiation

2007-11-26 06:19:43 · 3 answers · asked by wish on a star 1 in Biology

2007-11-26 06:18:49 · 5 answers · asked by Andy 2 in Mathematics

2007-11-26 06:18:49 · 5 answers · asked by Machiavelli 1 in Earth Sciences & Geology

can anyone show me how to do this problem?

2007-11-26 06:18:34 · 2 answers · asked by SK 1 in Mathematics