Science & Mathematics - 26 September 2007

Above question related to mixture and allegation

2007-09-26 01:16:40 · 8 answers · asked by sakira 1 in Mathematics

...on the level against resistance proportional to the square if its speed. At what rate would the car have to work to double its maximum speed?

2007-09-26 01:06:02 · 1 answers · asked by Anonymous in Mathematics

2007-09-26 01:05:40 · 8 answers · asked by Pavan Murthy 1 in Astronomy & Space

At what distance from the earth's surface will a mass of 50kg be just 481 N? (the object is on space)

how is this to be solved?

2007-09-26 01:03:47 · 1 answers · asked by The kenT 2 in Physics

There is no evidence, visual or recorded, that earth is slowing down in its spinning.

2007-09-26 00:52:12 · 10 answers · asked by Anonymous in Astronomy & Space

both i think because bears have been reported to attack humans so they have to be caged so as not to harm humans and humans to take care of them but as in the case of tarsiers they have to be in their natural habitat because if they are separated from their family/natural habitat they will commit suicide.. sOoo. what do ya think?

2007-09-26 00:50:46 · 6 answers · asked by sarah^_^ 1 in Earth Sciences & Geology

Q1_ Evaluate Sin^2 33 + Sin^2 57.

Q2_ If a & b are Zeros of a polynomial P(x)=2x^2 - 7x + 3. Find the value of a^2 + b^2.

Q3_ Which term of A.P. 21, 18, 15, ....... is -81.

Q4_ Find the length of a tangent drawn from a point 13cm away from the center of a circle of radius 5cm.

Q5_ Find the value of m If equation mx^2 +2x + m = 0 has two equal roots.

Q6_ A card is drawn from a pack of cards. Find the probability that is a red face card.

Q7_ 11 good pens are mixed with 5 bad pens. A pen is taken from the lot. Find the probability that is a good pen.

Q8_All three face cards of spades are removed from a well shuffled pack of 52 cards. A card is drawn from remaining pack. Find the probability of getting: A black face card, A queen.

Q9_ On dividing 3x^3 - 2x^2 + 5x - 5 by a polynomial g(x), the quotient & remainder are x^2 - x +2 & -7 respectively. Find g(x).

Q10_ Show that the points (1, -1) (5, 2) (9, 5) are collinear.

2007-09-26 00:48:17 · 3 answers · asked by h.ars_h 2 in Mathematics

We see the same face all the time.

2007-09-26 00:47:27 · 5 answers · asked by Anonymous in Astronomy & Space

2007-09-26 00:40:47 · 4 answers · asked by sam 2 in Earth Sciences & Geology

Just wondering. this video says a 767-200 is not capable of more then 250/300 mph at 700ft. I think there wrong, because the airliner that hit the pentagon did with such force it destroyed most of the aircraft...It had to be moving over 500mph right?
http://www.livevideo.com/video/BBEEBDC869004B4187FF33B510913286/colorado-black-forest-home-and.aspx

2007-09-26 00:37:33 · 3 answers · asked by done 3 in Physics

If for the number zεC is /z-i/=1, prove that 4<=/z+4+2i/<=6


(/..../ is the modulus)

2007-09-26 00:30:32 · 3 answers · asked by Joey 1 in Mathematics

If you had 1,000 bars of pressure and 900,000 litres of water per minute, what horse power would you be able to achive with a pelton? What is the equation to use?

2007-09-26 00:25:05 · 4 answers · asked by Anonymous in Physics

2007-09-26 00:13:48 · 9 answers · asked by Anonymous in Astronomy & Space

Plz help!!!!:

If for the number zεC is /z-i/=1, prove that 4<=/z+4+2i/<=6


(/..../ is the modulus)

2007-09-26 00:07:52 · 2 answers · asked by Joey 1 in Mathematics

Name all the large birds for me, I don't need much info on the small ones.

And just to add onto the question ... Why do eagles, badgers, and more powerful animals tend to go after the snake ??

2007-09-26 00:02:10 · 2 answers · asked by Anonymous in Zoology