Science & Mathematics - 30 October 2007

SHOW ME STEP BY STEP WITH AN EQUATION
REMEMBER
WITH AN EQUATION
thank you :]
first correct answer gets 10 pts.

2007-10-30 13:06:50 · 4 answers · asked by Anonymous in Mathematics

How do I convert each of the following decimal quantities to binary?

-17.25 & 171/64 ?

2007-10-30 13:06:28 · 3 answers · asked by Paige 1 in Other - Science

Does anyone know how to do this problem:

An offshore oil rig well is 4 kilometers off the coast. The refinery is 9 kilometers down the coast. Laying pipe in the ocean is twice as expensive as on land. What path should the pipe follow in order to minimize the cost? Complete the following statement.

The pipe should be laid in the ocean from the rig to a point on the coast_______km from the refinery, then on land the remainder of the distance to the refinery.

Thanks for any help!

2007-10-30 13:06:09 · 2 answers · asked by labellefille 1 in Mathematics

2007-10-30 13:01:14 · 4 answers · asked by Stony 4 in Agriculture

2007-10-30 13:00:37 · 1 answers · asked by Anonymous in Botany

but the answer in the book is 4x^3+ 3x^2-1

I have no clue how to get to the right anwer..please help

2007-10-30 12:59:42 · 5 answers · asked by maybe71400 1 in Mathematics

Lets imagine that there was a small tube big enough for a human being to go fit that went form the N. Pole to the S. Pole, somehow surviving the core and not effect it. And someone jumps into it, would they fall and end up on the south pole, or would they hover in the middle, or what would happen (assuming he falls fast enough to go throw quickly yet still staying alive) I know its not possible, but was just wondering

2007-10-30 12:59:09 · 2 answers · asked by Anonymous in Physics

thanks!!!!

2007-10-30 12:56:30 · 2 answers · asked by Anonymous in Physics

red-grizzly-polar-spectacled? so which is it?

2007-10-30 12:55:53 · 17 answers · asked by Anonymous in Zoology

2007-10-30 12:55:05 · 6 answers · asked by nataliya 2 in Geography

2007-10-30 12:54:23 · 11 answers · asked by TD Euwaite? 6 in Medicine

A. Find the position when the acceleration is equal to -28.
B. Find the acceleration when t=3

2007-10-30 12:48:51 · 4 answers · asked by Anonymous in Mathematics

2007-10-30 12:46:01 · 9 answers · asked by Jimmy Graber 1 in Mathematics

2007-10-30 12:44:44 · 9 answers · asked by Latasha R 1 in Mathematics

2007-10-30 12:43:18 · 36 answers · asked by Jim 2 in Mathematics

A spotlight on the ground is 100 feet from a building that has vertical sides.(length is apparently infinity) A person 6 feet tall starts at the spotlight and walks directly toward the building at a rate of 5 feet per second.

How fast is the top of the person's shadow moving down the side of the building when the person is 50 feet away from the building?

Step by step instructions would be GREAT. Thanks in advance!

2007-10-30 12:42:55 · 1 answers · asked by Anonymous in Mathematics

2007-10-30 12:42:41 · 3 answers · asked by Anonymous in Engineering

2007-10-30 12:42:31 · 4 answers · asked by Chris j 1 in Zoology

Different mass crates are placed on top of springs of uncompressed length L_0 and stiffness k. The crates are released and the springs compress to a length L before bringing the crates back up to their original positions.

Rank the time required for the crates to return to their initial positions from largest to smallest.
Rank from largest to smallest.
1 )
k= 10 n/m
L= 5 cm
L_0= 10 cm

2)
k= 5 n/m
L= 10 cm
L_0= 20 cm

3)
k= 20 n/m
L= 5 cm
L_0= 15 cm

4)
k= 15 n/m
L= 10 cm
L_0= 15 cm

5)
k= 10 n/m
L= 5 cm
L_0= 20 cm

6)
k= 5 n/m
L= 5 cm
L_0= 10 cm

2007-10-30 12:42:08 · 1 answers · asked by Jarom J 1 in Physics

I have no idea how to do this problem, please help!

Two objects of masses m and 4m are moving toward each other along the x-axis with the same initial speeds v0 = 40.0 m/s. The object with mass m is traveling to the left, and the object with mass 4m is traveling to the right. They undergo an elastic glancing collision such that mass m is moving downward after the collision at right angles from its initial direction.

(a) Find the final speeds of the two masses.

(b) What is the angle from its initial direction of motion at which the mass 4m is scattered?

2007-10-30 12:39:56 · 3 answers · asked by Brittany F 2 in Physics

I don't understand this stuff at all. Please show some work.


Tarzan, whose mass is 85.0 kg, swings from a 3.50 m vine that is horizontal when he starts. At the bottom of his arc, he picks up 60.0 Jane in a perfectly inelastic collision. What is the height of the highest tree limb they can reach on their upward swing?

2007-10-30 12:37:08 · 2 answers · asked by Brittany F 2 in Physics

when you leave info, please leave website if you get it from website, no need to leave website if you know it

2007-10-30 12:37:00 · 1 answers · asked by mikeyyyyyyyyyyyyyyyyyyyyyyyyyyyy 1 in Other - Science

2007-10-30 12:35:22 · 3 answers · asked by David 1 in Mathematics

In what direction and with what speed is the car moving? In other words, what is car’s velocity. Hint: this question requires input from Trigonometry for the right angle triangle.
Thus, the car was moving with the velocity of 38 m/s [E510N] (or, to the north of due east).

2007-10-30 12:35:10 · 1 answers · asked by navya 1 in Physics

2007-10-30 12:33:04 · 5 answers · asked by sasha 4 in Mathematics

2007-10-30 12:32:42 · 5 answers · asked by Anonymous in Astronomy & Space

2007-10-30 12:31:30 · 2 answers · asked by facethefacts 1 in Botany

2007-10-30 12:30:34 · 2 answers · asked by facethefacts 1 in Botany

Is it like ^5 radical x?

2007-10-30 12:29:21 · 3 answers · asked by Anonymous in Mathematics

I think have these answers right, but I was wondering if someone could help me make sure...

A is a 3x3 matrix. The null space of A = {The Zero Vector}
Select any of the following that is necessarily TRUE.
There may be more than one right answer.

a. the dimension of the null space = 1
b. the range of A = R^3
c. the columns of A are a basis for R^3
d. A defines a one to one mapping

I'm pretty sure D is true because when the null space is only equal the zero vector the function is one to one, and A must be true because there is only one vector in the null set. I'm pretty sure B and C are not necessarily true, but I'm not positive.

--

T is a linear mapping from R^3 into R^3.
The range of T is a plane through the origin.
Which of the following describes the null space of T?

a. R^3
b. a plane
c. a line
d. a point

I think it's B because I remember reading that the range is parallel to the domain's null set, but, again, i'm not sure.

2007-10-30 12:24:20 · 2 answers · asked by ? 3 in Mathematics