Science & Mathematics - 7 August 2007

Thank you. First answer wins best answer.

2007-08-07 04:18:58 · 36 answers · asked by Anonymous in Mathematics

Real life examples would be great.

2007-08-07 04:14:09 · 12 answers · asked by Bryan G 2 in Engineering

2007-08-07 04:13:52 · 5 answers · asked by De3p 1 in Astronomy & Space

Two cars are 15 kms apart. One is turning at a speed of 50kmph and the other at 40kmph . How much time will it take for the two cars to meet?


plz solve with explanation.

2007-08-07 04:13:32 · 3 answers · asked by Lolla 2 in Physics

2007-08-07 04:13:24 · 12 answers · asked by De3p 1 in Astronomy & Space

You measured the current in one leg and it was 50 amps. What would you say if someone asked you what the current was?

Would you say:
a)50 amps
b)150 amps
c) 86.6 amps
d) none of those

2007-08-07 04:10:36 · 7 answers · asked by Anonymous in Engineering

A car travels a certain distance taking 7 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 5 hrs. What is the distance travelled?

2007-08-07 04:09:09 · 4 answers · asked by Lolla 2 in Physics

it is urgent

2007-08-07 04:08:14 · 1 answers · asked by Anonymous in Zoology

I always wondered if there was a website devoted soley to ranking via poll or data on the most painful sting issued by a winged stinging insect. that is, which one of those beasties packs the biggest punch?

2007-08-07 04:03:55 · 9 answers · asked by Delay 5 in Zoology

I would like to know the physics behind it.

2007-08-07 04:03:10 · 9 answers · asked by Dev 2 in Physics

Does the energy carried by the electrons remain as same as when potetial was 11kv or decreases. 10 Mwatt electricity is produced.

2007-08-07 03:52:46 · 3 answers · asked by sarita s 1 in Physics

I think this is interesting. I posted this before, but there was a typo and the definition of g was wrong. Now it's correct

Show there's no f:R-->R, differentiable on R, such that the composite g = f o f is given by g(x) = e^(-x) -1

2007-08-07 03:48:24 · 1 answers · asked by Steiner 7 in Mathematics

Please no fancy university jargon.

2007-08-07 03:45:28 · 5 answers · asked by Anonymous in Physics

2007-08-07 03:40:43 · 13 answers · asked by De3p 1 in Astronomy & Space

Has it been done? If so, how do I do it?

2007-08-07 03:39:02 · 3 answers · asked by worried person 1 in Other - Science

1.) Hexane
2.) Benzene
3.) Acetylene

2007-08-07 03:36:28 · 4 answers · asked by Anonymous in Earth Sciences & Geology

I'm designing some decks. Just wondering how I can divide a space equally into spaces. Even is easy, since everything just gets divided by midpoints, but odd is more difficult. Ideas?

2007-08-07 03:22:36 · 4 answers · asked by Blair E 1 in Mathematics

What would be the outcome to our solar system after a collision with the Andromeda galaxy? I know that our galaxy would be altered, but would the shock wave from such a colossal impact wipe out life as we know it throughout our galaxy?

2007-08-07 03:21:03 · 9 answers · asked by Anonymous in Astronomy & Space

the rate of change of temperature is with respect to time of a liquid which has been boiled and then allowed to cool is given by

dT / dt = -0.3(T-s)

where T is the temperature at the time t minutes and s is the surrounding temperature. Find the area/s of the region from T = 35 to T = 120 for a variety of surrounding temperatures showing the variation in the graphs and values of the regions. What does the area of the region represent?


please explain :)

2007-08-07 03:19:51 · 4 answers · asked by Sarah M 1 in Mathematics

I have searched on net and found that the Nasa who claims that they have succeeded in touching the moon is not genuine. Please share your knowledge about it.

2007-08-07 03:19:38 · 8 answers · asked by Sp@rsh 1 in Astronomy & Space

I already succeeded to display the S-parameters of my Low Pass Filter but I would like to display a smith chart in order to help me to find the matched values and to be more precise in the cut frequency.

2007-08-07 03:18:53 · 2 answers · asked by Anonymous in Engineering

find the integral of the equation Y = 100 cos x / x^2 from 90 degrees to 270 degrees. please explain. am not very bright :(

2007-08-07 03:16:18 · 5 answers · asked by Sarah M 1 in Mathematics

my aiee rank is 400000

2007-08-07 03:14:55 · 1 answers · asked by priyanshu s 1 in Engineering

The pavers are 4" X 8" and we want to extend them 32" from the pool. 13.5 feet of the circumference does not need pavers because there is a deck there.

2007-08-07 03:07:14 · 2 answers · asked by Anonymous in Mathematics

2007-08-07 03:03:50 · 4 answers · asked by cool IITian 3 in Mathematics

2007-08-07 02:55:29 · 11 answers · asked by Van.essa 2 in Mathematics

answer me within half an hour

2007-08-07 02:54:54 · 4 answers · asked by spc 1 in Geography

2007-08-07 02:54:45 · 36 answers · asked by marky 2 in Astronomy & Space

2007-08-07 02:53:58 · 5 answers · asked by butterfly 1 in Astronomy & Space

Imagine this scenario. A regular 60 to 100 Watt light bulb that turns on and off @ maybe 6 to 12 times an hour. How long will the life span be? Will it make a difference if the switch was linear instead of a pulse? Linear means slowly reaches the AC voltage level (120 or 220 won't really make a difference), and then, slowly go down till it reaches Zero voltage. Pulse means it's 220 volts one second and then it's zero.

2007-08-07 02:52:18 · 4 answers · asked by Abdallah A 3 in Physics