Science & Mathematics - 25 January 2007

i want to do a project as putting hydrogen into 4 stroke petrol engine.
will the engine blast or what will happen?
how much should be the safe injecting pressure of hydrogen into cylinder? (take engine 100cc engine.)
please provide with details.

2007-01-25 03:33:22 · 2 answers · asked by Anonymous in Engineering

Below 800 K, dimerization of C2F4 to cyclo-C4F8 follows 2nd order kinetics with k = 10^11.07 exp (-107 kj/mol/RT) cm^3 mol^-1 sec^-1. The molecular diameter of C2F4 is 5.12 A. Calculate k by collision theory and determine steric factor at 725 K.
Please show me how to do this!!!

2007-01-25 03:33:15 · 2 answers · asked by Anonymous in Chemistry

I am trying to find out what is the normal adult reference range for Serum Amylase and Serum Lipase tests? These are tests that are used to diagnose acute pancreatitis.

2007-01-25 03:32:27 · 4 answers · asked by abigail_evelyn 2 in Medicine

2007-01-25 03:30:14 · 8 answers · asked by kar_2022 1 in Engineering

Math algebra aplication

2007-01-25 03:27:24 · 10 answers · asked by kander0101 1 in Mathematics

If c (vector b)- (vector a) = -3/4d (vector a) + 1/4d (vector b),
can you conclude that d=4/3 and c=1/3 through

direct comparison of the coefficients of vector a on the right hand side and the coefficients of vector a on the left hand side to find d

and then do the same for the coefficients of vector b?

Please explain clearly with some reasons. My teacher said this can not be done as you can't compare 4+2=10-6.

2007-01-25 03:27:12 · 2 answers · asked by Anonymous in Mathematics

Does the rod exert a force on the foil?

2007-01-25 03:25:44 · 4 answers · asked by whoknows 1 in Physics

2007-01-25 03:24:14 · 2 answers · asked by Sled Queen 3 in Biology

2007-01-25 03:23:54 · 7 answers · asked by tamdj2001number1 1 in Mathematics

2007-01-25 03:23:07 · 4 answers · asked by ladytiger6969 1 in Medicine

2007-01-25 03:21:55 · 7 answers · asked by james b 1 in Mathematics

2007-01-25 03:21:53 · 6 answers · asked by Stumped 3 in Earth Sciences & Geology

whats the anser?

2007-01-25 03:20:22 · 22 answers · asked by eeric570 2 in Mathematics

2007-01-25 03:20:07 · 10 answers · asked by tamdj2001number1 1 in Mathematics

2007-01-25 03:19:34 · 2 answers · asked by bushboy_sq 1 in Earth Sciences & Geology

If I bring 6 bags of groceries into my house, they may take up about 3 square feet, but after consumtion I have 4 square feet of trash. Then multiply that times the amount of airspace which is used for trash in landfills (dumps), why does it increase so substantially? (sp?)

2007-01-25 03:19:25 · 2 answers · asked by Wood Smoke ~ Free2Bme! 6 in Physics

Yes or no? Does ontogeny really recapitulate phylogeny? What do you think?

2007-01-25 03:18:57 · 3 answers · asked by cowboybronco01 4 in Biology

2007-01-25 03:18:37 · 8 answers · asked by tamdj2001number1 1 in Mathematics

2007-01-25 03:17:17 · 6 answers · asked by Su 1 in Mathematics

wondering when you pull the metal bar is it just attached to a torque meter or would it be possible to make one incorporating strain gauges into the design?

2007-01-25 03:16:44 · 1 answers · asked by realta 2 in Engineering

2007-01-25 03:16:14 · 14 answers · asked by tamdj2001number1 1 in Mathematics

We just found out my father has another kid with a gold digger he met some time ago, and it doesn't really look like him.
Me and my sisters are wondering if its possible to make and DNA test between any of us and the kid.
We don't want my dad find out about it.

2007-01-25 03:16:08 · 6 answers · asked by ahmoce1 2 in Medicine

2007-01-25 03:15:32 · 1 answers · asked by serban o 1 in Geography

Solubility of Sodium Sulfate decreases sharply on cooling from 50 deg C to 0 deg C and crystals are obtaind during cooling. Will the crystals heat or cool pure water during redissolution, if the pure water is at room temperature.(say, 30 deg. C)?(Assume adiabatic conditions, i.e no heat is given to or taken from the system)

2007-01-25 03:14:35 · 1 answers · asked by Nandkumar 1 in Chemistry

2007-01-25 03:12:39 · 2 answers · asked by Anonymous in Geography

V=f(r)=4(pi)r^3 is the original function

what is f^-1 (f inverse) V?

2007-01-25 03:12:16 · 3 answers · asked by Cynthia P 1 in Mathematics

2007-01-25 03:12:06 · 5 answers · asked by tim s 1 in Engineering

that is 2 to the power of (x minus 1) = 3

2007-01-25 03:11:25 · 5 answers · asked by Anonymous in Mathematics

I have found these things very confusing i doing maths questions. I would like to know what is the general meaning of these things, how it formed, how it works and all these things. And if possible, a name of a website from whare i can get these information, or a person, to whom I can contact to find the answres.

2007-01-25 03:10:18 · 7 answers · asked by Anonymous in Mathematics

Looking for the smallest wallabies

2007-01-25 03:03:43 · 2 answers · asked by Barbara T 1 in Zoology