Science & Mathematics - 26 January 2007

what is the highest watt light bulb can you run on a standard bulb

2007-01-26 10:31:49 · 4 answers · asked by Nick S 1 in Engineering

6x^2 -15x -9 . .. . . 4x^2 +2x
__________ ÷ .. . _______
2x^2 +2x - 24 . . .. . x^2 +4x

2007-01-26 10:30:47 · 3 answers · asked by Doug 2 in Mathematics

2007-01-26 10:28:33 · 8 answers · asked by julie g 1 in Zoology

I have a small ride on 6 volt car that I converted to a 12 volt dc motor and two 6 volt batteries in series. The problem I'm having is the car jumps out too fast and the powered wheel spins out. Would I just need a variable resistor to control the motor and slow it down a bit?

2007-01-26 10:28:28 · 5 answers · asked by JimS 1 in Engineering

I am trying to form a stable (Storable) form of Acetaldehyde. but i cant use lead or silver sealer around pure aluminum fittings (Purity reasons) used for distillation, so im wondering if paraldehyde attacks PTFE TAPE? so i can use that.

2007-01-26 10:28:11 · 1 answers · asked by Goldfish 2 in Chemistry

a 30- oz jar of popcorn costs $2.59. To the nearest cent, which is the unit price in cents per ounce?
A) 9 cents
B) .10 cents
C) 78 cents
D) none of these

can u explain what u did

2007-01-26 10:27:51 · 4 answers · asked by tinkerbell03 2 in Mathematics

Ca+H2O=Ca(OH)2+H2

2007-01-26 10:27:22 · 3 answers · asked by †ღChristian♥Girlღ† 2 in Chemistry

I have overwelming cravings for raw meat and when i even think of eating vegetables i start to feel ill and get dizzy spells, what is wrong with me?

I realize mankind are predators but could it be we are becoming carnivores as well, because i can't figure out what up with me.

2007-01-26 10:26:24 · 3 answers · asked by Anonymous in Biology

2007-01-26 10:25:58 · 5 answers · asked by Anonymous in Earth Sciences & Geology

If Sylvia works overtime, she earns 1½ times as much per hour as usual. After working her usual 40 hours last week, she worked an additional 4 hours of overtime. She made $552 last week. Find her usual hourly wage.

2007-01-26 10:24:44 · 4 answers · asked by mike 1 in Mathematics

2007-01-26 10:22:53 · 6 answers · asked by chris 2 in Mathematics

Two girls have the same parents and were born at the same hour of the same day of the same month, but they are not twins. How can this be possible?

2007-01-26 10:22:46 · 9 answers · asked by Anonymous in Zoology

There is a fence with squiggly metal wire. If I look at the skyline
(approx. 3-4 miles away), the buildings appear bent in more than
one place.

Why is this? How does this work? P.S. It only works during the
daytime.

2007-01-26 10:21:43 · 4 answers · asked by comedycatalyst 2 in Other - Science

2007-01-26 10:18:37 · 2 answers · asked by Anonymous in Biology

2007-01-26 10:17:43 · 4 answers · asked by comedycatalyst 2 in Physics

I am having a hard time with this math problem that goes like this:
lim √(x-3)=2
x-->1

2007-01-26 10:17:21 · 3 answers · asked by Anonymous in Mathematics

2007-01-26 10:16:37 · 6 answers · asked by Jeffrey & ??? 1 in Mathematics

1. NOVA.com 2. theprivilegedplanet.com, equip.org

2007-01-26 10:15:39 · 4 answers · asked by comedycatalyst 2 in Astronomy & Space

In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?

the answer is 18% but i can't figure it out.

2007-01-26 10:14:56 · 2 answers · asked by Ha!! 2 in Mathematics

a car owner may buy insurance that will pay the full price of repairing the car after an accident, or save $12 a year by getting a policy with a $500 deductible. her insurance company says that bout 0.5% of drivers in her area haven an at-fault auto accidnet during any given year. based on this info, should she buy the policy with the deductible or not? how does the value of her car influence this decision?

2. Since the stick market began in 1872, stock prices have risen in about 73% of the years. assuming that market performance is independent from year to year, what's the probability that
a)the market will rise for 3 consecutive yrs?
b)the market will rise 3 yrs out of the next 5
c)the market will fall durimg the at least 1 of the next 5 years
d)the market will rise during a majority of the years over the next decade

2007-01-26 10:14:00 · 1 answers · asked by loope 1 in Mathematics

2007-01-26 10:13:13 · 1 answers · asked by janemr83 1 in Chemistry

2007-01-26 10:13:07 · 1 answers · asked by chemgeek 1 in Medicine

2007-01-26 10:11:59 · 13 answers · asked by Anonymous in Zoology

2007-01-26 10:11:26 · 1 answers · asked by chemgeek 1 in Chemistry

An open-top box is to be constructed from a 4 foot by 6 foot rectangular cardboard by cutting out equal squares at each corner and the folding up the flaps. Let x denote the length of each side of the square to be cut out.
Find the function V that represents the volume of the box in terms of x.

2007-01-26 10:10:54 · 2 answers · asked by jcpara9 1 in Mathematics

I understand that if you measure time at one point from a high altitude and compare it to the time directly below sea level you would result in different times. This is obvious as the distance of circumference at each point are different as it travels around earth. Is there a better real-world example of how gravity can distort universal space and time and not space and time relative to earth or sun's rotation?

2007-01-26 10:07:34 · 6 answers · asked by jose o 6 in Physics

A grocer mixes two kinds of nuts. One kind costs $5.00/kg and the other costs $5.80/kg. How many kilograms of each type are needed to make 40 kg of a blend worth $5.50/kg?

2007-01-26 10:07:08 · 4 answers · asked by mike 1 in Mathematics

2007-01-26 10:06:58 · 2 answers · asked by ripvanwinkle 2 in Engineering

When I read about theoretical physics I feel like I should have ordered my pizza with no mushrooms. Does anybody else feel like that?

2007-01-26 10:05:26 · 4 answers · asked by chris B 3 in Astronomy & Space

i'm a math major and i'm going for my masters right now. I want to introduce a new number to our widely used number system. I also already have a name for it. The name has nothing to do with my name. But I don't want anyone to steal my idea.
Similar to the google, a 1 followed by 100 zeroes. that number was added to our number system a while ago. I'm not sure who came up with that, or if his name was john google. but I want to do the same thing as him. the google has absolutely no applications in the universe what so ever. there aren't even a google particles in the universe. the total number of protons, neutrons, and electrons in the universe is something like 10e83. that's from memory of reading "a breif history of time" by hawking. it's a wonderful book by the way. so how was the google brought into the dictionary and is usually taught in most schools at one point or another? and why, since there is no applications using it?
I'd like to introduce another one.

2007-01-26 10:05:20 · 3 answers · asked by brandon 5 in Mathematics