Science & Mathematics - 30 September 2007

(x) = 5x-X^2, [f(5+h) - f(5) / h ] , h is not equal to 0

Directions: Find the difference quotient and simplify.
How would I do this?

2007-09-30 14:24:00 · 1 answers · asked by :] 3 in Mathematics

A truckload of plastic soda bottles was finely shredded at a recycling center. The plastic shreds were placed into 55-liter drums. What is the mass of the plastic shreds inside one of the drums? Hint: 55-liters=55,000 milliliters=55,000cm^3

2007-09-30 14:23:05 · 2 answers · asked by Fruitsickle 2 in Chemistry

I want to understand this process. Is it when the humidity percentage meets the dewpoint percentage that condensation occurs? Or am I way off base?

2007-09-30 14:16:43 · 6 answers · asked by hls 2 in Weather

if a person on a space shuttle were to try to light a floating ball of gasoline, what would happen? does combustion rely on gravity?

2007-09-30 14:14:04 · 11 answers · asked by Belial 2 in Physics

A sample of air contains only nitrogen and oxygen gases whose partial pressures are 0.80 atm and 0.20 atm, respectively. Calculate the total pressure and the mole fractions of the gases.

2007-09-30 14:13:10 · 1 answers · asked by PiNk-PrInCeSs 3 in Chemistry

(population)

2007-09-30 14:12:24 · 4 answers · asked by Bianca D 1 in Geography

If a Caterpillar climbes up an 18 foot telephonepole... 3 feet during the day, but falls back down 2 feet at night... How many days does it take him to reach the top?

2007-09-30 14:11:57 · 2 answers · asked by Kelly S 1 in Earth Sciences & Geology

Originally chicken mcnuggets from mcdonald's could be purchased in quantities of 6, 9, or 20. If n nuggets can be ordered as a combination of 6, 9, and 20 it is called a mcnugget number. For example, 21 is a mcnugget number since one would order 2 boxes of 6 mcnuggets and one box of nine mcnuggets. Find all positive integers that are NOT mcnugget numbers, and explain how you know that the last in your list is in fact the last non mcnugget number...

This is crazy hard and i'm stumped, any help?

2007-09-30 14:11:37 · 2 answers · asked by greenwhite_lax 1 in Mathematics

Humans are Type I, but also breed fast....

2007-09-30 14:10:33 · 4 answers · asked by Tony 2 in Biology

a concave mirror has a radius of curvature of 0.50cm.
where an object in front of the mirror must be placed in such a way that its image forms to 0,15 m behind the mirror

to 0.38m
b 0,19 m
c 0,093 m
d 0,77 m
and 0.57

2007-09-30 14:08:25 · 1 answers · asked by Anonymous in Physics

what is the effect of shape on the density of the same material?

2007-09-30 14:07:45 · 2 answers · asked by police_usa_911 1 in Chemistry

A pumped-storage reservoir sits 155 m above its generating station and holds 8.5 109 kg of water. The power plant generates 350 MW of electric power while draining the reservoir over an 8.0 hour period. What fraction of the initial potential energy is lost to nonconservative forces (i.e., does not emerge as electricity)?

2007-09-30 14:05:45 · 3 answers · asked by nathanr20 1 in Physics

2007-09-30 14:00:53 · 1 answers · asked by Candy K 1 in Chemistry

my son failed his drug test, the only thing he has been taking is goody powder.

2007-09-30 13:57:57 · 3 answers · asked by Anonymous in Medicine

The staff of a small company includes 3 secretaries, 18 technicians, 2 engineers 1 executive and 39 factory workers. If a person is selected at random, what is the probability that he or she is a factory worker ?

2007-09-30 13:57:28 · 5 answers · asked by Ryan =] 1 in Mathematics

2-propoxy hexane

can't be hexyl propyl ether, because that doesn't indicate that the oxygen is on carbon 2, on the hexane chain..
how do I name it??

2007-09-30 13:57:08 · 1 answers · asked by Anonymous in Chemistry

1) A truck needs to average 45 mi/hr in order tocomplete a haul on time. if the truck has been averaging 43mi/hr for the first 4.0 hours, whats must be its average speed for the remaining 1.0 hour of the trip?

2) A pilot taking off from an aircraft carrier is told to expecta tail wind of 42.0 km/hr. If the pilot's cruising speed is usually 625 km/hr, how long, in minutes will it take the plane to reach and island that is located 25.0 km from the carrier?

3) What is the average speed, in miles/hr, of a golf ball that travels 208 ft in 2.75 seconds?

Please show steps...I dont understand. Thanks a ton =)

2007-09-30 13:57:04 · 1 answers · asked by kickitup21 1 in Physics

'm considering a Mathematics/Computer Science BS double major.
Im good at math, always have been.
My interests since i was young have been video games, electronics, computers, internet, always have an interest in new technology and stuff like that.
from what ive read, there seems to be jobs for someone with that type of education working with, computer software, game design, developing new technology,gadgets,etc.
also anyone that has done this, just wondering what type of things your doing, see if anything sparks my interest.

2007-09-30 13:56:41 · 4 answers · asked by Anonymous in Other - Science

http://www.goroadachi.com/etemenanki/mars-hiddencolors.htm

2007-09-30 13:56:39 · 4 answers · asked by stonehouse421 2 in Astronomy & Space

My 8 yr old son asked me this today and it's eating away at us. Thanks!

2007-09-30 13:54:19 · 14 answers · asked by Anonymous in Biology

What private company is trying to pull this off?

2007-09-30 13:52:23 · 4 answers · asked by Anonymous in Astronomy & Space

3/5x100
2/5x100
2/3x100
100%

2007-09-30 13:51:50 · 2 answers · asked by chato r 1 in Physics

Erin wanted to know the height of another triangle. She knew the base was 20 ft., and the area was 60 sq. ft. Find the height.


can u tell me what formula to use and how to do it?? please????

2007-09-30 13:51:20 · 7 answers · asked by Anonymous in Mathematics

A tennis ball's initial velocity is 30m/s [S]. When struck by a tennis racquet, its velocity becomes 28m/s [n30w]. Determine the ball's change in velocity.

P.S. i tried several times but i dont know how the diagram for this question will look like. Can someone plz help and diagram wud be useful.

2007-09-30 13:51:17 · 1 answers · asked by cool :-D 1 in Physics

If you could break up a carbon dioxide molecule, would you still have carbon dioxide? Can you please explain further on why / why not?

Thank you so much, the best explained answer, gets the 10 points.

& In what ways is sand in a bowl like a liquid?
in what way is it different?

:)

2007-09-30 13:48:06 · 4 answers · asked by lol! It's moi 2 in Chemistry

It's like the C=C always have substituents. So , why it it on some examples the cis or trans or E or Z not used on the name of an alkene? My text doesn't explain

2007-09-30 13:47:10 · 2 answers · asked by Anonymous in Chemistry

What is the value of X?

(x / 5) - (x / 6) = 1

2007-09-30 13:45:51 · 11 answers · asked by rothj06 2 in Mathematics

I have an idea of something I'd like to create and patent. I need to find a very small motion sensor and a motor to accommodate the sensor(similar to that of soap dispenser). Where can I find a website with instructions on creating such a device or where can I purchase what I need.

2007-09-30 13:44:58 · 3 answers · asked by ppmaggoo 1 in Engineering

2007-09-30 13:43:05 · 8 answers · asked by Anonymous in Mathematics

please help

2007-09-30 13:42:38 · 2 answers · asked by ctaylor5142 1 in Chemistry