Science & Mathematics - 8 October 2006

I have an assignment for physics class in which I have to build a paper bridge. Requirements are that only 10 sheets of typing paper and elmer's glue can be used, the bridge has to weigh less than 75g, has to be less than 5mm in thickness, and has to span a space of 15cm. The lighter it is and the more it can hold, the better the grade. Also, nothing but the "road" can be within or attatched anything in the 15cm gap. All supports and things must be outside that. Any ideas or advice? Thanks in advance.

2006-10-08 09:05:28 · 3 answers · asked by lildude 1 in Physics

Is this an example of Ohm's law?

2006-10-08 09:02:34 · 3 answers · asked by Anonymous in Physics

2006-10-08 09:00:56 · 3 answers · asked by true1faeva 1 in Biology

2006-10-08 09:00:37 · 3 answers · asked by Anonymous in Physics

The ancestor was Land dwelling

2006-10-08 09:00:11 · 6 answers · asked by Jwoozy 1 in Biology

2006-10-08 09:00:07 · 7 answers · asked by Anonymous in Engineering

I can tell you a few of mine one rattler in Ariizona grab a cessna 250 airplane out of the air another rattler in utah ate a 800 pound fat man another sanke in nam try to eat the boat while making the true first documenatry apocolyps.

2006-10-08 09:00:06 · 7 answers · asked by Anonymous in Zoology

If evololution is true and we go far back enough, how did the first living little critter ( cell-sized presumably) come to be? We know that living matter cannot be created from non-living matter. So I find it hard to comprehend, how did that huge leap happen?

2006-10-08 08:59:57 · 6 answers · asked by ☻Cool Beans☺ 2 in Biology

2006-10-08 08:58:51 · 8 answers · asked by Anonymous in Mathematics

It would help if the site was free, had exmaples, worked out each problem, and Had step by step of how to do any question.

2006-10-08 08:58:36 · 2 answers · asked by ♫Music & Magic♫ 2 in Mathematics

okay i have beeen trying to figure out this problem the answer that i keep getting is NOT one of the ones in the multiple choice..

solve 13x = 2(5x +3)

can some one please help me and show how u did it??
thanx soo much to the people that answer my question!!
=]

2006-10-08 08:57:41 · 6 answers · asked by Anonymous in Mathematics

Science fair project

2006-10-08 08:57:08 · 7 answers · asked by parkjm3621 1 in Geography

2006-10-08 08:56:18 · 10 answers · asked by Anonymous in Chemistry

as in can you smell spring, summer or autum in the air , i think you can but eveybody i ask thinks im a bit odd

2006-10-08 08:56:08 · 24 answers · asked by Anonymous in Weather

2006-10-08 08:55:57 · 10 answers · asked by Andrew S 1 in Physics

2006-10-08 08:55:55 · 5 answers · asked by Cristina P 1 in Biology

I did a recent I.Q test on a website www.chooseaprize.com and it had a question with 4 possible anwswers to choose from - however I thought the answer is 28 and this was not one of the 4 answers. the question -

Two cars start off at the same point on a straight road facing opposite directions. Each car drives for six miles, takes a left turn, and drives for eight miles. How far apart are the two cars?

2006-10-08 08:54:29 · 20 answers · asked by Anonymous in Mathematics

in 2001 ,two women skied 1675 miles in 89 days accross the landmass of antartica.they still had to ski 508 miles accross the Ross Ice shelf to reach McMurdo station.About wat percent of their distance remained? show ur work.
A. 2%
B. 17 %
C. 23%
D. 30%
thanx to the people that help me ! =]

2006-10-08 08:54:18 · 5 answers · asked by Anonymous in Mathematics

I am trying to find a situation where the kinetic friction acting upon an object is grater than the static friction acting upon it.

2006-10-08 08:52:00 · 4 answers · asked by Rowdy and Rooty 1 in Physics

What mass (in grams) of CaCl2(s) must be dissolved in pure water at 10.0 deg Celsius to make a 27.0 mL solution and to increase the solution temperature to 16.2 deg Celsius? Assume that there is no heat loss from the solution and that the solution has the same physical properties as pure water.
Pay particular attention to sign and significant figures.
If you wish to use scientific notation, use the "e" format - eg. 7.31e4 = 73100 & 1.90e-2 = 0.0190. Do not enter units.

Data:
DHsol(CaCl2)(s)) = - 82.8 kJ.mol-1

specific heat of water = 4.184 J.g-1.deg-1

density of water = 1.00 g.cm-3

molar mass of CaCl2 = 111 g/mol

2006-10-08 08:50:33 · 3 answers · asked by darksoul3029 1 in Chemistry

True or False

2006-10-08 08:49:22 · 5 answers · asked by cantfindem 1 in Physics

2006-10-08 08:47:22 · 5 answers · asked by girlsidra 1 in Biology

Just trying to understand the people that do this. What do you get out of it? Do you feel like a chump?

2006-10-08 08:47:12 · 8 answers · asked by WJ 7 in Mathematics

True or False

2006-10-08 08:46:54 · 4 answers · asked by cantfindem 1 in Physics

what did they think matter was?

2006-10-08 08:44:58 · 4 answers · asked by bambamashleighsam 1 in Earth Sciences & Geology

Im unsure wheter its a lunar or a solar eclipse but it is the one that makes the full moon all fiery red during the event. it is also called a blood moon.

2006-10-08 08:42:58 · 2 answers · asked by phoenixgirl21 2 in Astronomy & Space

I know of the existence of these devices in the early 1900's.
They were used to determine whether a particular pebble was likely to be useful as a crystal radio component.
But do they still exist, and what are they called?
Is there a schematic or even a description?

How would one be built, if they are no longer sold?

All help is appreciated, thanks.

2006-10-08 08:42:37 · 1 answers · asked by twilightinsanity 2 in Other - Science

2006-10-08 08:38:04 · 11 answers · asked by ? 2 in Engineering

interger which satisfies the inequality.

2. FInd all the solutions of the following equations:
a) 3x-7=5-x
b) 3(y-2)=2 (7-4y)
b) 5-3b /3 =2b + 1/5

3. Mr Jones has the option of having the gas supplied to his home by one of two companies. Both Companies have a fixed standing charge per quarter and charge a fixed rate for each unit of gas consumed.
Company A is mr Jones current supplier. His bills for te last two quarters have been $122.50 and $158.50 for 250 and 330 units of gas respectively. Company B has the standing charge of $17.00 and charges 43 cents for each unit of gas consumed.
(a) For both companies, find an expression for the cost, C, of a quarterly bill in terms of the number of units,u,of gas consumed.
(b) Determine how many units of gas Mr. Jones would have to consume per quarter to make it worth his while charging his gas supplier.

4.Draw the curve y=x2 - x-6 for values of x between -4 and 5.Henc find the smallest value y takes and solve inequality x2-x-6<0

2006-10-08 08:35:36 · 3 answers · asked by Anonymous in Mathematics

a.) C2H5OH
b.) MgCl2
c.) NaCl
d.) NaHSO4
e.) CaSO4

2006-10-08 08:35:26 · 1 answers · asked by Anonymous in Chemistry