Science & Mathematics - 30 November 2007

i took 1 10mg oxycodone an 4 5mg hydro.an took a piss test 36hr later.will i pass.i drank ALOT OF WATER+omni extra strength softgel. i drank like 4 32oz of water the night before and the recommended amount of water which was 48-64oz of water an hour before the test. would i pass? its a lab test

2007-11-30 06:12:50 · 2 answers · asked by the king 2 in Medicine

For all you Power Engineers and Thermodynamicists out there. We have 90mL of water sitting at the end of a non-insulated pipe. The water drained out from a steam trap valve located at the outlet. We know the temperature of the inlet steam but not the condensed water (has not been sitting long enough to be room temp.) How do we convert this volume to a mass?

2007-11-30 06:12:46 · 3 answers · asked by Chubbs20 2 in Engineering

Can you define an idea that has no clear end? Are there any books that discuss this idea? We were talking about this in my science class today, in relation to the speed of light.

2007-11-30 06:11:44 · 6 answers · asked by Jillian 2 in Astronomy & Space

2007-11-30 06:08:58 · 5 answers · asked by Anonymous in Mathematics

2007-11-30 06:08:58 · 1 answers · asked by Anonymous in Chemistry

2007-11-30 06:08:44 · 10 answers · asked by devilmaycry2250@sbcglobal.net 1 in Weather

3. You have a laser with wavelength = 635.3[nm]. The grating has a slit spacing of 1.633E-03[mm]. What is the angle measured for n=1?
angle = ___________[radian]
Use three sig. figs.; or use N/A, if not enough information is given.

2007-11-30 06:04:17 · 1 answers · asked by Anonymous in Physics

A U-tube open at both ends is partially filled with water (Fig. P9.80a). Oil ( = 810 kg/m3) is then poured into the right arm and forms a column L = 4.00 cm high (Fig. P9.80b).

Figure P9.80 http://www.webassign.net/sf/p9_80.gif

(a) Determine the difference, h, in the heights of the two liquid surfaces. Assume that the density of air is 1.29 kg/m3.
cm
(b) The right arm is then shielded from any air motion while air is blown across the top of the left arm until the surfaces of the two liquids are at the same height (Fig. 9.80c). Determine the speed of the air being blown across the left arm.
m/s

2007-11-30 06:03:21 · 2 answers · asked by Anonymous in Physics

Some gerontologists (biologists who study aging) argue that the ultimate lifespan of a human is
limited by telomere copy number. Adult human cells have the gene for telomerase, but it is inactive in
all but the cells which give rise to sperm. Loss of just one telomere in a cell—the cell dies (generally).
Some feel that if the gene for telomerase could be “turned on” so that it expresses the active enzyme,
then we could become “immortal” (will not die from natural age-related afflictions). Dr. Struldbrug has
invented such a drug that can be taken once and one has active telomerase for the rest of one's life.
People are buying it in droves.


A) What are telomeres and what role to they play in cell division? Why are they necessary?
B) What will happen to the takers of Dr. Struldbrug's Immortal Elixir? From what afflictions will they
suffer (and die?) from more often than mere mortals?
C) What type of drug would you invent to combat those afflictions? How would it work?

2007-11-30 06:02:33 · 3 answers · asked by Anonymous in Biology

A helium-filled balloon at atmospheric pressure is tied to a 3.0 m long, 0.070 kg string. The balloon is spherical with a radius of 0.40 m. When released, it lifts a length (h) of the string and then remains in equilibrium as in Figure P9.78. Determine the value of h. When deflated, the balloon has a mass of 0.25 kg. (Hint: Only that part of the string above the floor contributes to the load being held up by the balloon.)

http://www.webassign.net/sf/p9_78.gif < figure

2007-11-30 06:01:38 · 1 answers · asked by Anonymous in Physics

You are studying a new primate species which you have just discovered in remote jungles of Africa.
You have brought back to the lab a lot cells that can be grown and used to isolate cellular components.
The standard methodology is to isolate random fragments of DNA, clone them, and do lots and lots of
sequencing to characterize the genome. You have already cloned restriction fragments in the size range
300-2000 bps but haven't yet sequenced them. Unfortunately, the Flat Earth Luddites (an
ultraultraconservative group) has decided biological knowledge is dangerous and managed to destroy
all the manufacturing plants for ddNTPs halting all large-scale sequencing projects.

Science must go on. Describe 5 experiments you will do do characterize the genome of this
primate. You can choose any genome-specific reasonable metrics. Include at least one that allows you
to make comparisons of it to the human, chimpanzee, and/or rhesus macaque (the genomes of these
primates are fully sequenced). Assume you can get any research materials from those organisms. You
can perform about a total of 10 kb of sequencing with dNTPs you have left over.

2007-11-30 06:00:53 · 1 answers · asked by Anonymous in Biology

A huge vat is full of marbles all mixed together, with a number written on it. 20% of the marbles have a "0", 30% have a "1", 10% have a "15", 10% have a "30", 10% have a "80" , and the rest have a"100". Let Y be a number written on a randomly-selected marble (round all answers to four decimal places)

[a]The mean of the random variable Y is:?

[b]The Standard Dev. of Y is:?

[c]Take 20 marbles. What is the probability that the number of "ones" is at most 5:?

[d]Take 100 Marbles. What is the prob. that the number of "ones" is at most 25:?

[e]The prob of the average of numbers on n=25 is less than 35 is:?
For a sample of n=81 it would be:?
For a sample of n=400 it would be:?
For a sample of n=1600 it would be:?
For a sample of n=6400 it would be:?

2007-11-30 06:00:32 · 3 answers · asked by Dani S 524 1 in Mathematics

A skateboarder rides down the side of a half pipe that has a 25m diameter. He starts from rest and moves through an angle of 0.85 radians. If the skateboard has a wheel with a 2cm radius, how many rotations does each wheel make?

2007-11-30 05:55:14 · 2 answers · asked by Anonymous in Physics

if i ingest 3 moles of glucose molecules, how many CO2 molecules will i exhale???

2007-11-30 05:54:53 · 3 answers · asked by blueeyegreen 1 in Chemistry

every physical thing we see have a size, otherwise that is not a physical thing. if let there is "x" beyond universe, then what beyond that "x".......and so no. actually, is universe has no limit? , & why so?
please, i am crying about.......please

2007-11-30 05:48:09 · 8 answers · asked by Anonymous in Astronomy & Space

2007-11-30 05:45:04 · 14 answers · asked by omegalbee 1 in Astronomy & Space

The Earth is centrally concentrated. The material that is in the center is much denser than what we find at the surface. This means that the density of our Earth's moon is about 3.3 times that of water which is just slightly greater than that of Earth rocks. What does this imply for the central concentration and composition of the Moon? What does this tell you about the possibility of joint origin of the Moon and Earth?

2007-11-30 05:41:22 · 1 answers · asked by Anonymous in Astronomy & Space

Im having a tough time with this statement. Can anyone identify the premise and conclusion?

Clopyralid is a chemical that can seep or leach through soil and contaminate groundwater. Consequently, users are advised not to apply clopyralid over soils with rapid permeability (such as loamy sand or sand), particularly in commercial or residential areas.

2007-11-30 05:39:40 · 2 answers · asked by Ty J 2 in Botany

2007-11-30 05:38:43 · 14 answers · asked by Anonymous in Weather

2007-11-30 05:35:38 · 17 answers · asked by Anonymous in Astronomy & Space

2007-11-30 05:35:24 · 1 answers · asked by Anonymous in Astronomy & Space

Can that be translated into volt and amps....I can' really understand joules......Also , my defibrilator is internal so it functions more efficiently than external....I've had both.

2007-11-30 05:35:18 · 2 answers · asked by Anonymous in Physics

2007-11-30 05:33:21 · 8 answers · asked by serdar k 1 in Engineering

2007-11-30 05:32:07 · 5 answers · asked by paul w 1 in Physics

i keep mine in our back porch ..not heated and rubber bottoms on scopes and cement floor.

2007-11-30 05:31:27 · 6 answers · asked by Kara 2 in Astronomy & Space

I live in an area where it snows in the winter quite a bit (eastern Washington state) - several feet sometimes.
It can drop below zero as well.

Yet fog often is present in the winter? Why? I thought it had to be a bit warmer for fog.

There's quite a bit of fog outside right now, a few inches of snow on the ground, and it's around 33 degrees...but it was around 20 last night and it was also quite foggy.

2007-11-30 05:27:08 · 4 answers · asked by tryandfindus 5 in Weather

2007-11-30 05:26:24 · 5 answers · asked by bfly 3 in Chemistry

A 1.5 kg mass is whirled in a horizontal circle at the end of a .8 meter long cord. If the cord stands out at an angle of 40 degrees from the vertical, calculate

(1) the radius of the circle produced by the path of the mass
(2) the angular speed of the mass in radians/second
(3) the centripetal force acting on the mass.

2007-11-30 05:20:45 · 1 answers · asked by labelapark 6 in Physics

What mass of KNO3 would have to be decomposed to produe 21.1L of Oxygen measured at STP?

2007-11-30 05:18:44 · 3 answers · asked by youssef a 1 in Chemistry

What mass of KNO3 would have to be decomposed to produe 21.1L of Oxygen measured at STP?

2007-11-30 05:18:18 · 1 answers · asked by youssef a 1 in Physics