Science & Mathematics - 10 October 2007

2007-10-10 04:09:29 · 17 answers · asked by Roshiron 2 in Engineering

i'm not recieving the answer 13.36 when i do the working out. when i integrate i get [(5-4sint)^3/2]/3/2 x 1/-4cost and when i place the values 0 and 2pi i don't get the answer needed, so bit confused.

2007-10-10 04:06:52 · 2 answers · asked by lookincool87 1 in Mathematics

2007-10-10 03:53:11 · 3 answers · asked by Jerry M 1 in Astronomy & Space

9 6 4 2

The figure above show an example of a 4-digit identification code used by a certain bank for its customers. If the digits in the code must appear in descending numerical order, not using zero and no digit can be used more than once, what is the difference between the largest and the smallest possible codes?

2007-10-10 03:51:51 · 7 answers · asked by Anonymous in Mathematics

Triangle ABC is isosceles with right angle at B. There is a point D in the interior of triangle ABC such that |DA| = 5, |DB| = 3 and |DC| = 4. Find the area of the triangle ABC.

2007-10-10 03:47:46 · 6 answers · asked by sdlei 2 in Mathematics

My fiancee recently found out we are having a child together. Great! We have a very close connection. The pattern of the triangle of the stars, actually 2 stars and 1 planet, are in the same pattern the birth marks we have on the same place on our backs, and the crescant moon seem to be sitting in the triangle cradling a child in the wound. Any thoughts?

2007-10-10 03:46:35 · 7 answers · asked by Colonel Brachend Parkholme 2 in Astronomy & Space

2007-10-10 03:43:30 · 2 answers · asked by jennylyn m 1 in Zoology

I want to know how you can find out who has been reading your profile, does anyone know how to do this?

2007-10-10 03:40:37 · 4 answers · asked by Anonymous in Astronomy & Space

2007-10-10 03:39:42 · 3 answers · asked by coco 2 in Astronomy & Space

An Olympic basketball player shoots towards a basket that is 5.86 m horizontally from her and 3.05 m above the floor. The ball leaves her hand 1.57 m above the floor at an angle of 43.0o above the horizontal.
What initial speed should she give the ball so that it reaches the basket and hopefully scores?

2007-10-10 03:36:49 · 3 answers · asked by Anonymous in Physics

I've been to Seattle, WA and it rains alot there, is that a great location for rain lovers like me?

2007-10-10 03:35:49 · 15 answers · asked by Moore55 4 in Weather

I have been researching on this for past one year and finally came to know that Mars has civilization earlier and the people living there were forced to leave the planet some 12,000 yrs. back and some of them came to earth and played a major role in the foundation of the city called Atlantis. Now the thing is that there is no evidence at all on the surface of Mars to prove it that their was a civilization living on it but there is network of tunnels and caves found underneath it. NASA has also recently accepted this fact as their satellite imagery system has proved it.

2007-10-10 03:35:05 · 4 answers · asked by Kislay 3 in Astronomy & Space

I have a 30mw green laser pointer.. Does anyone know how do I increase the power of it? I was told I have to heat the diode to modify the crystal from round to oval shape.. is it correct?

2007-10-10 03:30:17 · 3 answers · asked by peterpan 1 in Engineering

a spaceship crashed? Or something like that?
http://www.dark-stories.com/eng/roswell_...


THERE WERE BODIES. ALIEN BODIES. How did they explain that? Maybe that was some other incident. But would you mind telling me about the one with aliens in it?

2007-10-10 03:29:37 · 11 answers · asked by sting 4 in Astronomy & Space

2007-10-10 03:28:55 · 13 answers · asked by Moore55 4 in Weather

Please help!

Write the equation of a line perpendicular to the line 6x – 3y=10 and containing the point (-6, 2). Show all your work

2007-10-10 03:24:07 · 4 answers · asked by Anonymous in Mathematics

An Olympic-size pool is 40. m long and 30. m wide.
(a) How many gallons of water (d = 1.0 g/mL) are needed to fill the pool to an average depth of 6.0 ft?
(b)What is the mass (in kg) of water in the pool?

2007-10-10 03:21:12 · 3 answers · asked by Anonymous in Mathematics

(via a rope) with a force of magnitude Fr = 45 N. As the block slides through distance d = 0.25 m along the ramp, its kinetic energy increases by 90 J. How much greater would its kinetic energy have been if the rope had not been attached to the block?

2007-10-10 03:19:53 · 2 answers · asked by tosinjesu 1 in Physics

a sagging door 4 meters by 5 meters is to be made rigid by the addition of a diagonal piece of iron bar.how long must the bar be?

pls. answer dis w/solution. tnx.

2007-10-10 03:18:21 · 9 answers · asked by mhAe c 1 in Mathematics

i have a print wich needs modernising, how does smd ans transistors work and how do i confine transistors in a smaal space without going to hot, aka cooling

2007-10-10 03:16:22 · 4 answers · asked by Honey006_sara 1 in Engineering

2007-10-10 03:15:37 · 2 answers · asked by dandamanx2 2 in Astronomy & Space

We are college students in the Philippines currently taking up electronics and communications engineering. Our thesis is about "PC-Based Real-Time Vehicle Tracking using GPS-Aided Inertial Navigation System". We totally have no background on this topic. Your help would be very much appreciated. Thanks

2007-10-10 03:12:50 · 1 answers · asked by eco 1 in Engineering

In a group of 40 students, 25 applied to Columbia and 30 applied to Cornell. If 3 students applied to neither Columbia nor Cornell, how many students applied to both schools?

2007-10-10 03:08:17 · 7 answers · asked by Anonymous in Mathematics

2007-10-10 03:06:24 · 2 answers · asked by Anonymous in Physics

2007-10-10 03:05:34 · 1 answers · asked by zerald 1 in Chemistry

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 956 N and the drag force has a magnitude of 1025 N. The mass of the sky diver is 97.6 kg. What are the magnitude and direction of his acceleration?

2007-10-10 02:59:46 · 1 answers · asked by jukeb0xqirl 2 in Physics

2007-10-10 02:49:12 · 4 answers · asked by dandamanx2 2 in Astronomy & Space

When they EAT GREEN GRASS?

please help.

2007-10-10 02:48:15 · 3 answers · asked by gotsquestions 1 in Zoology

I mean a real debate, where someone for and someone against the idea got to present their respective cases, and rebut the other's case? Has there ever been serious discussion on this, or has "mainstream" science just rejected it out of hand?

2007-10-10 02:39:47 · 1 answers · asked by ComfortZone 2 in Other - Science

With so many news outlets,each one trying to out-sensationalize the others.It seems to me hauntings would bring in big-time ratings.I don't mean You-Tube videos or short filler stories. I mean in-depth 20/20 type investigations.They would certainly be ratings gold and might just be the proof we're all looking for.

2007-10-10 02:39:30 · 8 answers · asked by Dr. NG 7 in Other - Alternative