Science & Mathematics - 31 December 2007

If you had 2 way mirrors facing inwards in a cube and then you shone atorch in, would the light just bounce round inside? Then you could take it to a dark room and open it and it would be light?

2007-12-31 12:38:57 · 7 answers · asked by Anonymous in Physics

True-breeding tall red-flowered plants are crossed with dwarf white-flowered plants. The resulting F1 generation consists of all tall pink-flowered plants. assuming that height and flower color are each determined by a single gene locus, predict the results of an F1 cross of the TtRr plants. List the phenotypes and predicted ratios for the F2 generation.

2007-12-31 12:32:24 · 3 answers · asked by Anonymous in Biology

Pattipan squash are either white or yellow. You start growing pattipans and find out that if you want to get white pattipans then at least one of the parents must be white. Which color is dominant?

2007-12-31 12:27:46 · 3 answers · asked by Anonymous in Botany

2007-12-31 12:25:02 · 12 answers · asked by Anonymous in Astronomy & Space

Biology Chemistry of Life Unit

2007-12-31 12:24:21 · 2 answers · asked by Anonymous in Biology

two factories manufacture electric bulbs, 7% of the bulbs from factroy A and 10% of the bulbs from factory b are defective . factory B produces three times as many as bulbs as factory A each week. A bulbs is chosen at random from the week's production.

1- what is the probability that the bulb is satisfactory?

2- if the bulbs is defective, what is the probability that it came from factory A?

3- if two bulbs are chosen at random, what is the probability that they are both from factory B, knowing that the first is defective while the second is satisfactory?

2007-12-31 12:17:12 · 3 answers · asked by Anonymous in Mathematics

2007-12-31 12:14:05 · 5 answers · asked by lucyloo 1 in Medicine

A. what is the probability that a mating between two carriers will produce an offspring with a recessively inherited disorder?


B. What is the probability that a phenotypically normal child produced by a mating of two heterozygotes will be a carrier?

2007-12-31 12:11:58 · 4 answers · asked by Anonymous in Biology

A 8cm radius disk with a rotational inertia of .12kgm^2 is free to rotate on a horizontal axis. A string is fastened to the surface of the disk and a 10kg mass hangs from the other end. The mass is raised by using a crank to apply a 9Nm torque to the disk. Find the acceleration of the mass.

2007-12-31 12:11:55 · 1 answers · asked by corlears56 1 in Physics

like if you throw water out of a door way and it freezes in the air, what temperature is that?

and HAPPY NEW YEAR!!!!!!!!!!!!!!!!!!!!

2007-12-31 12:11:00 · 10 answers · asked by Anonymous in Weather

Why the heck do companies continue to use crappy MicroStation? Is it like a tenth the cost of AutoCad or something?

2007-12-31 12:08:10 · 1 answers · asked by Anonymous in Engineering

Solve the system by addition. 2x + y = 4 x + y = 3

2007-12-31 12:04:38 · 6 answers · asked by cutter1890 1 in Mathematics

what is its taste?

2007-12-31 12:03:59 · 3 answers · asked by Anonymous in Chemistry

On some of the questions I have responded to I have seen a frightening level of scientific ignorance and claims made that have ZERO evidence. Do these people actually believe what they are saying? Do they understand that in REAL science you can't just make statements and claim that they are true unless you have EVIDENCE to back up your claims? Is anybody else as dismayed by this level of ignorance, which is sometimes WILLFUL ignorance? These questions usually involve the Big Bang or evolution, and claims are made that are just absurd... when will it end?

2007-12-31 12:00:21 · 8 answers · asked by Paul Hxyz 7 in Other - Science

I get that one side is true course, one is airspeed, and one is direction/strength of wind, but how do I figure out what angle to fly at?

2007-12-31 11:56:35 · 2 answers · asked by Anonymous in Astronomy & Space

explain in terms of atomic structure why cesium has lower first ionization energy than rubidium

2007-12-31 11:55:55 · 2 answers · asked by anon reigns 3 in Chemistry

2007-12-31 11:53:58 · 5 answers · asked by ptyde 1 in Zoology

Lets say NASA just saw an asteroid with a diameter of 1 mile. and it would hit earth in 3 days what would we do? how would NASA stop it from hitting earth?

2007-12-31 11:52:17 · 14 answers · asked by Anonymous in Astronomy & Space

Some people beleive that in evolution and not god, im one of those people. its said that we evolved from monkeys and they evolved from some other stuff but does anyone actually think thatus humans will evolve into anything?

2007-12-31 11:49:49 · 10 answers · asked by Anonymous in Biology

Some, if not all of us have heard of the big bang.. the event that started the whole universe. Well it is said that the 4 fundamental forces (gravity, electromagnetic force, weak and strong nuclear force) were once combined and joined w/ extreme heat, exploded, and thats how the universe was born. Well if this is true, shouldn't we be able to reenact this event? We have all these forces present on earth so isn't it possible that this could be done?

2007-12-31 11:48:19 · 11 answers · asked by lavell2006 2 in Astronomy & Space

i feel soo stupid...

2007-12-31 11:48:11 · 9 answers · asked by Anonymous in Mathematics

can you please show me the steps.thank you

2007-12-31 11:47:41 · 10 answers · asked by dmurray032 1 in Mathematics

please can you show me the steps.thank you

2007-12-31 11:46:22 · 8 answers · asked by dmurray032 1 in Mathematics

2007-12-31 11:44:50 · 12 answers · asked by shadowcat 1 in Weather

"There does seem to be a general agreement that evolution 'happened' and is 'happening', but no one seems to have a very clear idea as to exactly how evolution works. While reading these quotes, I think that many will get a sense that even those who are in the know and who ardently believe that evolution happens are still unclear about exactly how it happens. This is interesting because the general public has been led to believe that the very process of evolution is clearly understood by the scientific community."

http://www.detectingdesign.com/quotesfromscientists.html

2007-12-31 11:44:29 · 12 answers · asked by Questioner 7 in Biology

help!!mathematicians...?

halley's comet has an elliptical orbit with the sun at 1 focus.its closest distance to the sun is about 9 x 10 to the seventh power, while farthest is about 5.34 x 10 to the ninth power..

A. FIND THE LENGTH of the major axis of halley's comet's orbit.

B. WHAT IS THE LENGTH of its minor axis

2007-12-31 11:42:33 · 2 answers · asked by Anonymous in Astronomy & Space

1. Pig
2. Monkey
3. Penguin
4. Panda
please pick your favorite

2007-12-31 11:42:25 · 26 answers · asked by ♥IMO♥ 2 in Zoology

halley's comet has an elliptical orbit with the sun at 1 focus.its closest distance to the sun is about 9 x 10 to the seventh power, while farthest is about 5.34 x 10 to the ninth power..

A. FIND THE LENGTH of the major axis of halley's comet's orbit.

B. WHAT IS THE LENGTH of its minor axis?

2007-12-31 11:41:31 · 2 answers · asked by Anonymous in Astronomy & Space

2007-12-31 11:37:31 · 6 answers · asked by dmurray032 1 in Mathematics

2007-12-31 11:37:05 · 15 answers · asked by Anonymous in Earth Sciences & Geology