Science & Mathematics - 28 July 2007

so sound is the vibration of air, and air does have mass. The question is what will happen to sound if the the mass of air increases??

2007-07-28 09:16:21 · 3 answers · asked by      7 in Physics

I notice EVERYTIME thunderstorms are forecasted, they hit everywhere but my neighborhood. Even when they attempt to approach, they just fall apart. Then sometimes, they may even re-strengthen once they get over the lake or in Canada. Everyone got some form of Torrential Downpours or even severe weather this week but my neighborhood hasn't. Why is that?

It's like I'm in the Bermuda Triangle for Thunderstorms.

I'm in Detroit.

2007-07-28 08:57:29 · 4 answers · asked by Anonymous in Weather

Just curious what everyone else thinks about America showing absolutely no interest in Lunar progression.

I beleive it's because there is no Military Implications or advantages in returning to the moon. But i'm just one person. would love other oppinions!

2007-07-28 08:56:34 · 13 answers · asked by Vik C 2 in Astronomy & Space

If the Sun and the Moon are responsible for the tides on the Earth, why don't I see tides on a glass of water left untouched on the kitchen counter for 24 hours? Shouldn't my glass of water show the effects of the gravitational pull of the Moon and the Sun, just like the oceans?

2007-07-28 08:54:10 · 7 answers · asked by LJ 2 in Physics

A battery having an emf of 10.60 V delivers 102 mA when connected to a 60.0 ohm load. Determine the internal resistance of the battery.

How do I solve this?

2007-07-28 08:48:27 · 4 answers · asked by protege moi 3 in Physics

Adult tickets for a play cost $13 and child tickets cost $11. If there were 23 people at a performance and the theater collected $263 from ticket sales, how many children attended the play?
A) 17 children
B) 18 children
C) 19 children
D) 5 children


The sum of two numbers is 70. The second is 1 more than 2 times the first. What are the two numbers?


One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
A) 5
B) 7
C) 17
D) 34

Given f(x) = 5x2 – 3x + 1, find f(–2).
A) –13
B) 15
C) –25
D) 27

Given f(x) = –4x + 5, find f(–4).

2007-07-28 08:34:22 · 2 answers · asked by gemini 1 in Mathematics

Do both of these clouds rain or I should rather ask, Do both of these types of clouds rain equally?

2007-07-28 08:34:18 · 6 answers · asked by tusharcosmic 1 in Weather

I have a 37/50 worth 50 percent of my course. My exam is worth the other 50%. What percentage of answers do I need to get right to pass the course? (A passing grade is 50%). And can you please tell me how you got that answer?

2007-07-28 08:30:55 · 8 answers · asked by DL4evr 3 in Mathematics

I need to check online the postal rate for a package. My box is rectangular. The measurement of the three "sides" are 18", 17.5", and 9". The web site asks me to enter height, width, and length and I don't know which is which. Help!!!

2007-07-28 08:30:50 · 10 answers · asked by Emma 3 in Engineering

What is the only subsance on this earth harder than diamonds?

2007-07-28 08:25:09 · 2 answers · asked by Squirts 1 in Earth Sciences & Geology

2007-07-28 08:21:53 · 4 answers · asked by SadGirl$ 2 in Botany

2007-07-28 08:21:26 · 10 answers · asked by jassi s 1 in Chemistry

I am researching past lives/reincarnation and I want to find a site that reveals past lives?

2007-07-28 08:16:33 · 12 answers · asked by Samantha 3 in Paranormal Phenomena

I understand tidal lock, but if the Moon does actually rotate on it's own axis, doesn't rotation mean it spins a full 360-degrees, thus showing it's entire surface to Earth as it rotates?

2007-07-28 08:16:15 · 16 answers · asked by uspsorbust 1 in Astronomy & Space

is there a distict area in a pentagon... i mean like in a triangle the degree thing is 180. it has to be so for all triangles..or for a circle it is 360. what about a pentagon?

2007-07-28 08:12:45 · 8 answers · asked by *Gen.Orange* 2 in Mathematics

________ ______
(a^2-7a+6) (a^2-36)

this is hard.how would i find the least common denominator.
is there a online calculator of something that can help me.because i have alot of these to do to get a passing grade.?
im not a math genius so please dont tell me this is easy.please
let me know if you know about a website similar to quickmath.com to help me with these type of problems

2007-07-28 08:11:38 · 5 answers · asked by Anonymous in Mathematics

I need a time machine, to travel through time. I know the law of physics would not allow it. But, everything is possible with science.

2007-07-28 08:09:56 · 18 answers · asked by dinesh@coolbuddy 1 in Physics

2007-07-28 08:06:24 · 1 answers · asked by fatty fatty fatty 1 in Physics

Based on Einstein's famous relativity equation: E=mc2. its possible! Mass and energy are the same thing. A time machine using light in the form of circulating lasers to warp or loop time instead of using massive objects. Twisting space causes time to be twisted. You could walk through time as you walk through space. All this is for going back in time. You won't be changing history as it will be a different universe you'll be going back into, meaning its earth in a different universe that's different from the universe earth is in now. Now, do you think all this is possible? It may take 10 or more years for this time travel machine to be perfected.

2007-07-28 08:01:40 · 10 answers · asked by ZORRO 3 in Astronomy & Space

how is babby formed
how girl get pragnent

2007-07-28 08:00:08 · 8 answers · asked by confusing1 1 in Earth Sciences & Geology

Anyone know the proper formula for calculating the time of death for humans based on the stage of decay and what website can I find this on?

2007-07-28 07:58:16 · 4 answers · asked by littlesoutherner12 1 in Other - Science

2007-07-28 07:56:47 · 16 answers · asked by wabbettz 2 in Biology

The space shuttle produces 1 million foot pounds of torque and 37 million horsepower, the saturn 5 that took the astronauts to the moon had 7.5 million foot pounds of torque and 160 million horsepower. Why did the saturn 5 have more power? Was if because of weight?

2007-07-28 07:54:57 · 3 answers · asked by Anonymous in Physics

2 3/4 * 1/2 = ?

i get 3/4

2007-07-28 07:54:31 · 10 answers · asked by grem 3 in Mathematics

what happens if 50% of our Earthy atmosphere were made of O2???

2007-07-28 07:51:24 · 7 answers · asked by comichubble 2 in Earth Sciences & Geology

I'm on my sister's profile. I've seem to misplaced my Math Notes somewhere in the house. I'm going to the 5th grade and I need to know these Math Names. Can anyone give me a short definition to the words below? I already know what a ratio is.

~Mean
~Median
~Mode
~Range
~Numerator
~Denominator

Thanks!

2007-07-28 07:50:27 · 9 answers · asked by LiJDivine ♥s MJ 5 in Mathematics

The rest of the question is was dried (vapor of that liquid removed), the gas had a volume of 1.90 L at 25°C and 785 torr. Calculate the vapor pressure of this liquid at 25°C.

2007-07-28 07:48:41 · 2 answers · asked by Big H 1 in Chemistry

Views of earth as represented in these rwo maps are known as
A. polar projections
b. mercator projections
c. mollweide projections
d. equal- are projects

2007-07-28 07:48:15 · 3 answers · asked by La_morena 2 in Earth Sciences & Geology

Can a sheep explode by eating too much or not?

2007-07-28 07:44:45 · 24 answers · asked by Morgo 1 in Zoology

does anyone know how to levitate at an impossible angle with only one foot on the ground. if so please tell me. are there any gimmicks to this illusion?!

2007-07-28 07:44:08 · 2 answers · asked by Anonymous in Physics