Science & Mathematics - 3 January 2007

A high jumper, falling at -4m/s lands on a foam pit and comes to rest, compressing the pit .40m. If the pit is able to exert an avg force of 1200N on the high jumper in breaking the fall, what is the athletes mass???

lets see who the smartest and quickest one is out of this elite bunch...

2007-01-03 09:01:33 · 3 answers · asked by ツ 1 in Physics

An electric field of 332,000 N/C points due west at a certain point. What are the magnitude and direction of the force that acts on a charge of -8.9 µC at this spot?
magnitude

2007-01-03 09:00:59 · 5 answers · asked by Hey Carl 1 in Physics

2007-01-03 08:59:41 · 6 answers · asked by Anonymous in Chemistry

The length of a pattern for a 3ft part to provide the proper shrinkage allowance, should be:

A. 3ft
B. 3ft, 0.125 in. long
C. 3ft, 0.0250 in. long
D. 3ft, 0.375 in. long

2007-01-03 08:58:39 · 1 answers · asked by Ken P 1 in Engineering

like wht might it cause

2007-01-03 08:57:38 · 3 answers · asked by sagar g 2 in Biology

gold or copper or water or aluminum

2007-01-03 08:57:29 · 1 answers · asked by sjrebel2000 1 in Chemistry

2007-01-03 08:57:13 · 1 answers · asked by Me<3JB 2 in Other - Science

High-density copper infiltrated powder metal components can be given a protective coating by:

A. case hardening
B. Impregnating with oil
C. electroplating
D. shot-peening

2007-01-03 08:56:15 · 4 answers · asked by Ken P 1 in Engineering

Financing 421,600.00 over 30 yrs. at 4.8%. I am not sure how to figure this on the calculator.

2007-01-03 08:54:52 · 6 answers · asked by harbet79 1 in Mathematics

2007-01-03 08:54:20 · 12 answers · asked by courtney w 1 in Earth Sciences & Geology

2007-01-03 08:53:29 · 16 answers · asked by Anonymous in Chemistry

2007-01-03 08:52:54 · 10 answers · asked by Anonymous in Mathematics

2007-01-03 08:51:37 · 2 answers · asked by nakena g 1 in Botany

Is it a certian way to wire a regular capacitor or is it a special type of capacitor? I'm trying to build a circuit with it in it from the book
"Miniature Projects for Electronic Hobbyists."

2007-01-03 08:51:17 · 3 answers · asked by jesusprogrammingman 2 in Engineering

2007-01-03 08:51:07 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-03 08:50:53 · 5 answers · asked by nate 1 in Chemistry

2007-01-03 08:45:43 · 16 answers · asked by PandaLuvr 1 in Mathematics

I would swear that with two objects with the same mass but one is 100000% more dense then the more dense object would require more energy to be moved.

Is there physical proof of this? Proof through experiments rather than proof through theory?

2007-01-03 08:44:58 · 5 answers · asked by aorton27 3 in Astronomy & Space

What is the average temperature? What is the chance of rain? Humidity level?

2007-01-03 08:44:41 · 2 answers · asked by Anonymous in Weather

2007-01-03 08:44:01 · 7 answers · asked by riley_vick1992 2 in Mathematics

A dishonest barman removes three litres of wine from a barrel, replacing them with water and mixing the contents. He repeats the theft twice more, removing in total nine litres and replacing them with water. As a result the wine remaining in the barrel is half its former strength. How much wine did the barrel originally hold? (The answer will run into decimals, I think)

Can anyone help? 10 points goes to the correct answer with the clearest explanation.

Thank you!

2007-01-03 08:41:36 · 9 answers · asked by Anonymous in Mathematics

Does anyone know how to do scientific notation?? Like if i were to put this in standard form 4 x (10 to the -4th power) and put this into scientific notation 0.0089??? please help thanks :)

2007-01-03 08:41:27 · 8 answers · asked by marybeth n 1 in Mathematics

It has to do with measurement not money.

2007-01-03 08:41:22 · 8 answers · asked by kool kitty 1 in Mathematics

2007-01-03 08:39:47 · 9 answers · asked by nubian71 2 in Physics

sorry last one.Thanks for help on the other one.

2007-01-03 08:39:44 · 30 answers · asked by Anonymous in Mathematics

Fill in the blank----
A function whose graph is a straight line is called a(n)_________.
Help would be greatly apprieciated!

2007-01-03 08:38:03 · 10 answers · asked by Katti 1 in Mathematics

It's all in the question basically...how would you distribute something like this:

2(x+1)^2

Or this:
1/2(x+4)^2

An explanation would be very helpful. Thanks a bunch...
-Tom

2007-01-03 08:36:16 · 8 answers · asked by tdude51 2 in Mathematics

I need to create a word problem that would require the use of equations to solve the problem, and write an "answer key" which explains the solution to the problem.

I have no idea how to do this can anyone help!!
Thanks Ashley~

2007-01-03 08:34:16 · 7 answers · asked by Anonymous in Mathematics

2007-01-03 08:34:09 · 5 answers · asked by rob s 1 in Engineering

Full disclosure: I am a creationist, but I have always wondered about this one. I assume there is a theory and/or repeatable method, but I've never heard it. I'm fairly certain that you can't just leave a carcass on the ground any ol' place and get a fossil, so what are the conditions that must be present and what is the likelihood of those conditions existing in sufficient quantity to generate the fossil record?

Please, no flames, no "Well, yeah, how do you explain..." replies. This is an honest question and I promise to read any links provided. (A reasonable number of them anyway...)

2007-01-03 08:32:09 · 4 answers · asked by MithrilHawk 4 in Earth Sciences & Geology