Science & Mathematics - 16 September 2007

Theorem:
m and n are two integers where m dne. 0. There exists a unique pair of ints q and r, that satisfy,
n = mq + r and 0 less than equal to r less than abs value of m.

2007-09-16 05:11:19 · 3 answers · asked by jay d 1 in Mathematics

A relief airplane is delivering a food package to a group of people stranded on a very small island. The island is too small for the plane to land on, and the only way to deliver the package is by dropping it. The airplane flies horizontally with constant speed of 290 mph at an altitude of 600m . The positive x and y directions are defined in the figure. For all parts, assume that the "island" refers to the point at a distance from the point at which the package is released, as shown in the figure. Ignore the height of this point above sea level. Assume that the acceleration due to gravity is = 9.80m/s^2 .After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 290 in the horizontal direction.If the package is to land right on the island, at what horizontal distance from the plane to the island should the package be released?
What is the speed of the Pg

2007-09-16 05:09:28 · 3 answers · asked by Frostie K 1 in Physics

Suppose a parallelogram has sides of length 4 and 8 and the height to the shorter base is 6. What is the height to the longer base?

I got an answer to this problem but I don't think it is right, the answer I got was the square root of 52.

Does anyone have a better answer?

THANKS!

2007-09-16 05:07:41 · 4 answers · asked by Abby S. 2 in Mathematics

or would this be a bad idea?

2007-09-16 05:07:11 · 2 answers · asked by Rob H 4 in Medicine

The equation of a curve is x^3 + 2y = 3xy

dy/dx = (y -x^2) / ( 2y^2 - x)

^ means to the power of.

Find the coordinates of the point, other than the origin, where the curve has a tangent which is parallel to the x-axis.

Thanks a lot in advance

2007-09-16 05:07:03 · 2 answers · asked by Mystic healer 4 in Mathematics

For each positive interger n, define R(n) to be number of regions into which n lines, no two are parallel and no three of which intersect at the same point, divide the line.

Determine a forumla for R(n) and prove by induction it is true for all positive n integers...

I got a couple formulas but I don't know how to do the induction part...it's like...r(n) = n(n+1)/2 + 1 or r(n) = r(n-1) + n or r(n+1) = r(n) + n + 1...

which one do I use? how do I do the induction? thanks

2007-09-16 05:05:45 · 2 answers · asked by keromon 1 in Mathematics

I misinterpreted a simple equation, leading me to think of powers(exponents) that are not whole numbers. 2(2)(2)=8.
2(2)(2)(1)=8. So does the .5 mean nothing? Or mean nothing just in this case?

2007-09-16 05:03:44 · 4 answers · asked by justanotherfreak 1 in Mathematics

help please

2007-09-16 05:03:09 · 8 answers · asked by Alyse G 1 in Weather

a. NaCN
b. FeCl3
c. Na2SO4
d. K2CO3
e. Cu(OH)2
f. LiNO3

How do I find the answers. Explain how letter b is Iron(III)chloride. What do I do for ones like c and d with all of the numbers?

2007-09-16 05:02:39 · 4 answers · asked by Average Joes 4 in Chemistry

How does it work and who believes in it?? Moreover does it work??

p.s. since i dont know wat it is, i am sorry if this is in the wrong category!!

2007-09-16 05:01:22 · 3 answers · asked by Anonymous in Other - Science

I took elementary algebra in school, and now independently I want to understand physics equations. What is the mathematical progression from elementary algebra to advanced calculus? I want my learning to be geared towards the end result, and I cannot seem to find a more technical description than; algebra 1, algebra 2, geometry, trig, calc.. etcetera. What is the proper progression?

2007-09-16 04:58:28 · 4 answers · asked by justanotherfreak 1 in Mathematics

A pool has a volume of 45 m3.
The capacity of the pool is 45 000 L

a) what is the volume of water if the pool is 85% filled?
b) what is the cost to fill the pool to 85% capacity, if water costs $2.00/m3?

show your work and how you got the answer.

2007-09-16 04:58:23 · 1 answers · asked by anonymous 1 in Mathematics

How do i make my own remote control car using differnt things with my own remote control car?

2007-09-16 04:48:46 · 4 answers · asked by ihihihihihihi 2 in Engineering

A box with a square base and no top is to be made from a square piece of carboard by cutting 6 in. square from each corner and folding up the sides. The box is to hold 5046 cubic inches. How big a piece of cardbooard is needed?

i need the answer in inches by inches

2007-09-16 04:48:27 · 3 answers · asked by star baller 360 5 in Mathematics

logx + 2logy - logz

plz show ure steps if u can

thank you!

2007-09-16 04:48:04 · 2 answers · asked by Alex M 1 in Mathematics

2007-09-16 04:47:00 · 3 answers · asked by Tony K 1 in Physics

in a diesel cycle. it is denoted by beta B

2007-09-16 04:47:00 · 4 answers · asked by Hardik M 1 in Engineering

Find t5 given that:

t1 = 4, tn+1 = 6 + tn

full solution please.

2007-09-16 04:45:51 · 3 answers · asked by Geelee 1 in Mathematics

what does fire look like in space? i asked my bio 2 teacher and she asked her "teacher" friends, and they didn't know so they were going to research it and now she has professors looking on it. anybody know??

2007-09-16 04:44:45 · 11 answers · asked by pepsi 1 in Astronomy & Space

A car (mass of 1700 kg) is parked on a road that rises 15 degrees above the horizontal. What are the magnitudes of (a) the normal force and (b) the frictional force that ground exerts on the tires?
(1.0 is the coeffeciant of static friction and 0.8 is the coefficent of kinetic friction between concrete and rubber)
ok now what????????????

2007-09-16 04:40:35 · 6 answers · asked by kwali 2 in Physics

((x^2)(y^3)) / ((x^5)(y)(z^-1)) (x/z)^3

its easier to write it on paper

thank you

2007-09-16 04:40:18 · 2 answers · asked by Alex M 1 in Mathematics

2007-09-16 04:39:01 · 2 answers · asked by winky 2 in Engineering

a. MnO2
b. Li3N
c. CaCl2
d. SrBr2
e. NiCl2
f. K2S
g. CuCl2

Could you please explain how I can find the answers to these problems. I just don't understand how to write it out.

2007-09-16 04:38:33 · 1 answers · asked by Average Joes 4 in Chemistry

2007-09-16 04:38:28 · 9 answers · asked by Gikandre 2 in Astronomy & Space

2007-09-16 04:37:49 · 7 answers · asked by CREOLE 1 in Mathematics

I would require a switch that works as follows:
The switch would be by default closed with another circuit A, but if the voltage at the pt where the switch is below say 5 volts, it will switch itself to circuit B. The moment circuit A has a voltage above 5V, it would switch it self back from A to B. What type of electronic switch that works as stated? And how do we connect it?

2007-09-16 04:37:14 · 7 answers · asked by Pierre 1 in Engineering

2007-09-16 04:34:57 · 1 answers · asked by alex s 1 in Mathematics

I think there is a lot of potential for a space elevator within the next 10-15 years.

2007-09-16 04:33:18 · 3 answers · asked by Anonymous in Astronomy & Space

Please help me if you can!

2007-09-16 04:32:50 · 8 answers · asked by A.M.P. 3 in Mathematics

This is Algebra 2 word problems and i need help because i try so many times and i still get the wrong answer.

1.A music dealer ran a sale of records and tapes.ecord were reduced to $7 each and tapes to $7.50 each.The dealer sold 60 more records than tapes for a total sale of $2160. How many records did the dealer sell?

2.The Senior Class officers sold slices of pizza for .75 each and hamburgers for $1.35 each.They sold 40 more slices of pizza than hamburgers, and sales totaled $292.50.How many slices of pizza did they sell?

3.The perimeter of a certain basketball court is 266 ft,and its length is 35 ft more than its width.Find the dimensions of the court.

4.If one side of a square is increased by 8cm and an adjacent side decreased by 2cm,a rectangle is formedwhose perimeter is 40cm. Find the length of a side of the square.

2007-09-16 04:30:50 · 6 answers · asked by Innocent 3 in Mathematics