Science & Mathematics - 2 October 2006

i.e., inorder to go from dilution set to dilution set.... how much pipetting up and down does it take to mix a dilution before you can go to the next dilution set?

2006-10-02 03:43:12 · 4 answers · asked by Steven P 1 in Chemistry

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Does a very large pumpkin have more seeds than a small one?

2006-10-02 03:38:10 · 2 answers · asked by cmsb705 5 in Biology

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What are the differences between fiber optic channel and copper fiber channel?

2006-10-02 03:36:53 · 1 answers · asked by Jason P 1 in Engineering

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can anyone do the proof of (cal 1) cos x= -sin x ? i will appreciated :]?

i already seen the proof for sin x = cos x. I just would like to see the proof for cos x = -sin x. i will consider anything that could help me like a website or something. by the way its a calculus 1 problem.

2006-10-02 03:35:41 · 4 answers · asked by Anonymous in Mathematics

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How do you balance these equations?

Na2HPO4 +HNO3 = ?

Na2HPO4 + Ba(NO3)2

Na2HPO4 + Ba(NO3)2 + HNO3

Na2HPO4 + AgNO3

Na2HPO4 + AgNO3 +HNO3

im so lost.

2006-10-02 03:34:23 · 3 answers · asked by ibrakeforchucknorris 1 in Chemistry

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what happens to an iron road when it is heated give reason to it?

2006-10-02 03:33:24 · 4 answers · asked by gurna 1 in Chemistry

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Does anyone believe that one day, a device will allow us to defy gravity?

At the moment, we need lots of power to fly - to break the earths gravitational pull. Do you think that one day in the near future, someone will invent a "gravity shield" making flying possible with virtually no energy transfer?

2006-10-02 03:29:13 · 19 answers · asked by Charlie Brigante 4 in Physics

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essay of freezing thaw weathering?

2006-10-02 03:26:46 · 3 answers · asked by apas 1 in Geography

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when will new born baby breath?

2006-10-02 03:21:48 · 9 answers · asked by shiva 1 in Medicine

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Why does hydrogen in sun not burn out?

2006-10-02 03:20:58 · 17 answers · asked by amitabh s 1 in Astronomy & Space

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Why does nitric acid stain in the skin yellow color?

2006-10-02 03:19:29 · 3 answers · asked by crissie15 1 in Chemistry

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Could u tell me some funny maths theorems? U could even give me some mathematician jokes or funny definitions?

about any mathematical operations or any mathematical geometric figures. I am also looking forward to some funny practical applications of science or maths esp. Chemistry. Thanks.

2006-10-02 03:18:14 · 10 answers · asked by Anonymous in Mathematics

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Gyms for energy/power production???

Has anyone ever used all the energy generated by people using equipment in a gym or fitness room to provide power for a building? If not, could this be a practical possibility?

2006-10-02 03:11:09 · 7 answers · asked by Rozzy 4 in Engineering

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How many electricity units are consumed in supplying heat at 190 MJ/second?

Coal based power plant of 210MW generation capacity emits flue gas at a rate of 900tonnes per hour. If CO2 is captured from this capacity of gas, based on amine absorption technology, the reboiler of the amine regeneration column requires heat supply at 190MJ/second as per the simulation results.Considering this as the additional total energy requirement for the CO2 capture process, how much power can be actually generated?

2006-10-02 03:11:04 · 4 answers · asked by energyconscious 4 in Engineering

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what do you mean by manometer?

2006-10-02 03:03:41 · 8 answers · asked by antony j 1 in Physics

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sun has a high tempareture . why does the hydrogen not burn out?

2006-10-02 03:02:26 · 8 answers · asked by amitabh s 1 in Astronomy & Space

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poisonous liquid used in dyes?

2006-10-02 02:56:17 · 7 answers · asked by Tony W 1 in Chemistry

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some times ,we saw fire coming out of stack from diesel engine during the transient loading of engine-Reasons?

we have an engine runs well but when due to some protection, controller unloads it and reapplies load--the fire comes out of stack momentarily--what could be reasons -Is it issue of fueling at that moment or issue of improper turbine pressure- we are also seeing exh valve breakage on the engine too after a service of 16 months

2006-10-02 02:54:43 · 6 answers · asked by w111 t 1 in Engineering

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how was the idea of black hole conceived?

how was the idea of black hole conceived? give me also the website as your resource.

2006-10-02 02:44:39 · 6 answers · asked by gReEn_p!LLoWs 2 in Physics

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Is 250k Ohms that much different from 1.2m Ohms?

I work with paint application, and having issues with prep coat (adhesion promoter). One product reads 250k and the other reads 1.2m. Is there a big difference between the readings?? By looking it up online, it appears that the difference is huge the lower you go. For instance, the difference between 15mOhm and 4mOhm is not as big a difference as 4mOhm to 250kOhm. Also, does this make a difference on the distance the current will have to travel?? Is 250k better than 4m to go a distance of 24"? Does the lower # act as a better gage wire for instance?

2006-10-02 02:43:38 · 5 answers · asked by ? 4 in Physics

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Human vision is created from the eye or the brain?or both work together?

2006-10-02 02:42:28 · 7 answers · asked by joe 4 in Physics

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4 geometry questions?

6.
What is the measure of one edge of a cube if the diagonal of one of its faces is 4√3 units?

15.
What is the slant height of a right circular cone whose lateral surface area is 66pie units^2 and whose radius is 6 units?

18.
The total area of a cone is 38pie meters^2 and its radius is 2 meters. Find the slant height.

20.
A birthday hat in the shape of a cone has a lateral surface of 100pie cm^2. The slant height is 25 cm. Find the radius of the hat.

submission 31

2006-10-02 02:42:15 · 4 answers · asked by qtgyjda89 2 in Mathematics

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is designing in geometry possible through arithmetic progressions?

2006-10-02 02:38:09 · 3 answers · asked by Anonymous in Engineering