Science & Mathematics - 7 October 2007

i need to know how many gallons this air tank i have is.
its 8" round 24" long.

2007-10-07 15:56:12 · 5 answers · asked by Sean M 2 in Mathematics

miles required?

2007-10-07 15:53:36 · 4 answers · asked by Shirley J 1 in Mathematics

2007-10-07 15:51:24 · 9 answers · asked by Anonymous in Zoology

Rule-1: (0, 0), and (1, 1) are in T
Rule-2: If (a, b) is in T, then so is (a+2, b).
Rule-3: If (a, b) is in T then so is (a, b+2).

(i) List the first 10 elements/pairs (a, b) of set T in increasing order. Use a+b as value of a pair (a, b) for ordering purpose. Break ties arbitrary. Start with (0, 0).


(ii) The set T can be defined non-inductively using several other ways. Give one such definition that does not use induction or recursion but uses set comprehension. In other words, T = { (a, b) | some property P is satisfied by a, b}. State property P.

2007-10-07 15:50:24 · 2 answers · asked by simonkf2002 1 in Mathematics

Find N.

n,22,17,19,13,23,28

Mean is 18 Median 19

How do i find n can anyone explain?

2007-10-07 15:49:25 · 1 answers · asked by Anonymous in Mathematics

1. Find the term that must be added to both sides of the equation so that the equation can be solved by the method of completing the square: x^2 + 8x = 5


which is it?
[a] 32
[b] -5
[c] 16
[d] 64


2. solve by completing the square: -8x = 3x^2 - 2

is it:
[a] 4 +or- sqrt(22) /3
[b] -4 +or- sqrt(22) /3
[c] -4 +or- sqrt(10) /3
[d] 4 +or- sqrt(10) / 3

2007-10-07 15:45:29 · 4 answers · asked by Anonymous in Mathematics

Can you please show me the steps on how to do it please?thanks ;)

2007-10-07 15:45:10 · 7 answers · asked by Jenny 2 in Mathematics

2007-10-07 15:42:38 · 1 answers · asked by pwayballa11 1 in Mathematics

2007-10-07 15:38:08 · 1 answers · asked by pwayballa11 1 in Mathematics

2007-10-07 15:37:16 · 7 answers · asked by Anonymous in Mathematics

A while back I think I saw this on an episode of Ripley's Believe it or not about sisters that would drop to their knees praying to the sky in a trance. And the strange thing was that they were immovable, there was video of grown men trying to move them but failed. Who were these sisters, where can I find more information about this?

2007-10-07 15:35:32 · 6 answers · asked by LuckyS7evin 2 in Other - Alternative

Write the standard form of the equation of the line parallel to the line 3x + 2y - 3 = 0 and passes through (3,4). Can someone help me with this?

2007-10-07 15:34:20 · 3 answers · asked by doouneh 1 in Mathematics

2007-10-07 15:33:06 · 7 answers · asked by kokopelli 6 in Other - Alternative

Suppose you had a car that was mostly wheels and another car that had tiny wheels. if the cars have the same total mass and their center-of-masses are equal distances from the ground and each goes from zero to 40 mph in ten seconds, which one will nose up the most?

a) Muscle Head
b) Pip Squeak
c) Both the same

2007-10-07 15:31:20 · 2 answers · asked by ? 6 in Physics

folds are known as what?

2007-10-07 15:29:15 · 2 answers · asked by mo-z 3 in Medicine

lim x > 0 = (x^2 - x + sinx) / (2x)

note: x^2 is x squared

2007-10-07 15:28:02 · 5 answers · asked by NEEDs MATH HELP!! 1 in Mathematics

My brain completely spaced and I feel really retarted. In the equation 2 x 5=10, what are 2 and 5 called? (No rude comments at my stupidity please).

2007-10-07 15:27:01 · 8 answers · asked by nati 3 in Mathematics

This is a problem really similar to our HW, I just need to know how to do them in order to do my HW!) Thanks.

{Give answer to nearest hundreth.}

Sin x + Cos x = 0

2007-10-07 15:26:40 · 2 answers · asked by raider 1 in Mathematics

There is an expected demand of 20,000 units, with a .90 probability that the demand would be between 10,000 units and 30,000 units. This is based on a bell curve. What is the mean and standard deviation?

2007-10-07 15:22:33 · 2 answers · asked by Anonymous in Mathematics

A 120.0 volt motor draws a current of 7.80 A when running at normal speed. The resistance of the armature wire is 0.670 ohms.

(a) Determine the back emf generated by the motor.

(b) What is the current at the instant when the motor is just turned on and has not begun to rotate?

(c) What series resistance must be added to limit the starting current to 15.0 A?

2007-10-07 15:21:50 · 1 answers · asked by Anonymous in Physics

Simplify:

Sec x - Sin x Tan x

2007-10-07 15:14:37 · 5 answers · asked by raider 1 in Mathematics

A ball swings in a vertical circle at the end of a 1.30 m long rope. When the ball is 37.5° past the lowest point on its way up, its total acceleration is (-22.5 i + 20.2 j) m/s2.

Determine the magnitude of its radial acceleration.
(in m/s2)

Determine the speed and velocity of the ball.


I 'm not sure how to solve this problem... I know the basic rotational motion equations, but this is too complicated for me. What I really need is a vector diagram showing the components of its acceleration at that instant, so if anyone could do that for me (in paint or something), that'd be great. Or just show me how to solve the problem.
Thanks.

2007-10-07 15:09:52 · 2 answers · asked by The Rationalist 2 in Physics

I am doing a math assignment and I have a 90 degree trianle on side is 7in one side is 24 in how do I find the missing lenth.

2007-10-07 15:05:06 · 3 answers · asked by Tashia B 1 in Mathematics

I would love it if you could explain it in terms of a free falling objects.

2007-10-07 15:02:10 · 1 answers · asked by Mallory 1 in Physics

can someone tell me what the paste are used for...
i'm worried=S
thanks^^

2007-10-07 14:55:43 · 4 answers · asked by Anonymous in Medicine

when is the end of days

2007-10-07 14:55:24 · 11 answers · asked by ronald.carson 1 in Astronomy & Space

In a recent post I learned that CNTB has met Lynn Margulis, and emucompboy ran into astronaut Harrison Schmidt (the last man on the moon). They can tell you their stories.

My own favorite brush with fame was taking course in the Philosophy of Mathematics with Alonzo Church. (Of Church-Turing Thesis fame.) It was my last quarter as an undergraduate at UCLA ... and I was thrilled to know that he was teaching there, although in the Philosophy department, not Mathematics.

Anyone else? Eavesdrop on Watson and Crick arguing over a check at a restaurant? Catch Richard Dawkins buying fishsticks at the Safeway? Engage in an angry debate with Stephen Hawking at a physics symposium?

2007-10-07 14:53:13 · 5 answers · asked by secretsauce 7 in Other - Science

I really need answers to these questions.

A. When an alpha particle is emitted, how do the mass number and the atomic number change, if at all?

2. When three-quater of a radioactive isotope has decayed to become the stable daughter product,---------- half lives have occured.

2007-10-07 14:48:57 · 1 answers · asked by do you smell..... what's coo 4 in Earth Sciences & Geology

please tell me every thing you know about meteor showers, and/or meteors,and/or meteorites.

2007-10-07 14:48:20 · 2 answers · asked by meteor showers 1 in Astronomy & Space

A) density
B) concentration
C) temperature
D) mass
E) pressure


I thought that density mass and pressure were not intensive but I can only choose one, so i'm stuck?

2007-10-07 14:46:48 · 1 answers · asked by Anonymous in Chemistry