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Science & Mathematics - 3 December 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

what is the name of that type of small bird that lives in british columbia, it has a greenish brown body with an orange mark by its head?

2006-12-03 14:28:32 · 4 answers · asked by US 2 in Zoology

I hear alot of negative things about nursing school. I am interested in nursing. but i hear so much negative things.....is school really that bad????

2006-12-03 14:27:45 · 7 answers · asked by Anonymous in Medicine

4m squared-3mp+3p-4m

2006-12-03 14:27:04 · 3 answers · asked by Alexis 2 in Mathematics

Ok How many different ways can Ds and Rs be recorded if there are 5 slots?

I got 32 by doing 2*2*2*2*2. Is there another way to do this?

b)

3 must be Ds and 2 must be Rs... how many different ways can this be recorded?

I did 5!/3!2! = 10... is this correct?

2006-12-03 14:26:58 · 5 answers · asked by gg 4 in Mathematics

Can you please check over thiss for me...Thank youuu...

Note: Elodea is a fresh water plant.

a) Elodea cells normally contain 1% salt and 99% water.
b) Tap water contains 1% salt and 99% water.
c) Salt water contains 6% salt and 94% water.
d) Salt water has a higher concentration of salt than fresh water or Elodea cells.

Answer the following questions using the information above about the cell in salt water:

1) What is the percentage of water outside the cell at the start?- 94
2) What is the percentage of water inside the cell at the start? -99
3) How do the percentages compare? - the percentage of water inside the cell is higher than that of outside the cell
4) When will water move across the cells membrane? -during osmosis?
5) WOuld the cell shape change once it was placed in the tap water? -yes because the cell was trying to equal the concentration of water and salt inside and outside of it...

is all of this correct? if not, can you please correct my answers

2006-12-03 14:26:38 · 3 answers · asked by Lina 4 in Biology

2006-12-03 14:25:55 · 4 answers · asked by Anonymous in Earth Sciences & Geology

what is yellow wind. I am doing a project. its due tomorrow. HELP

2006-12-03 14:25:42 · 4 answers · asked by Komal D 1 in Weather

2006-12-03 14:24:33 · 2 answers · asked by Anonymous in Biology

I'm so confused. I was sure it was true . . but then someone said that everybody was just getting on a bandwagon, and yes we're going through global warming but it's a stage that the Earth goes through. She also said the plants around us produce more co2 than us and even if we were to change our habits, there would still be global warming. Any semi-educated answers out there? Please?

2006-12-03 14:24:06 · 15 answers · asked by Anonymous in Weather

I dont understand how to factor it using grouping can you break it down into the steps so i can understand it please

2006-12-03 14:21:24 · 3 answers · asked by Alexis 2 in Mathematics

i was just wondering?

2006-12-03 14:20:27 · 4 answers · asked by Anonymous in Weather

To grow oranges is it better to chose a place that has steady temperature or steady precipitation?

2006-12-03 14:18:57 · 3 answers · asked by kogmu 3 in Earth Sciences & Geology

If they normally breed in winter, give birth in spring, and raise young through the summer in the Northern Hemisphere, do they freak out if they are taken suddenly to the Southern Hemisphere?

2006-12-03 14:17:42 · 3 answers · asked by Anonymous in Zoology

1. A driver notices that her 1000kg car slows down 90 km/h to 70 km/h in about 6.0s on the level when it is in neutral. Approximately what power (watts and hp) is needed to keep the car traveling at a constant 80 km/h?

2. A shot putter accelerates a 7.3kg shot from rest to 14m/s. If this motion takes 2.0s, what average power was developed?


The answers from the book of the book for #1 is 2.1 x 10^4 W = 28 h, and #2 is 3.6 x 10^2 W.

I'm not sure how to get these answers so please show work and an explanation. Thanks so much!!

2006-12-03 14:16:48 · 1 answers · asked by hdwong58 3 in Physics

we cut down trees to get wood, so how long is it from we plant trees to the time when we can cut them down?

2006-12-03 14:10:36 · 6 answers · asked by Anonymous in Botany

I have 30 data points. The Mean is 139.2. The Standard Deviation is 1.32. How do I calculate, with 99% certainty, the range within which my next data point will fall?

If I multiply my Standard Deviation of 1.32 by 2.462 from the T-distributioin table (29 degrees of freedom) will that give me the value above and below my Mean that I can expect my next data point to fall?

Thanks.

2006-12-03 14:09:04 · 2 answers · asked by Liberals_Celebrate_Abortions 1 in Mathematics

I know gemstones are used for healing, but what's the difference between gemstones that are reiki charged and ones that are not?

2006-12-03 14:08:30 · 9 answers · asked by Anonymous in Earth Sciences & Geology

Is the Hubble Space Telescope able to zoom into the moon's surface and photograph the footprints left by Neil Armstrong of Apollo 11? Since there is no atmosphere, wind, rain or erosion on the moon the footprints should be undisturbed.

Has the Hubble ever photographed the launch platforms of the Lunar Excursion Modules, US Flags, Lunar Rover of Apollo 15 or other traces left by the astronauts? Are any photos available? Am I wrong to assume this is possible since the Hubble is able to clearly pinpoint objects much farther than the moon?

.

2006-12-03 14:07:52 · 4 answers · asked by Anonymous in Astronomy & Space

Please give me a simple definition...Thank you!

2006-12-03 14:06:47 · 4 answers · asked by Lina 4 in Biology

2006-12-03 14:06:12 · 14 answers · asked by christopher 1 in Mathematics

I have Albuterol sulfate solution and pulmicourt resoules... they expried a few months ago.. can I still use it?

2006-12-03 14:05:00 · 6 answers · asked by insubordinate_bytch 2 in Medicine

But does the Big Bang Theory not predict that all those distant stars to be in our back yard 15 billion years ago?

2006-12-03 14:04:40 · 6 answers · asked by Willem V 3 in Astronomy & Space

2006-12-03 14:03:16 · 2 answers · asked by Anonymous in Engineering

what is the basic measurement for density thanx

2006-12-03 14:03:13 · 9 answers · asked by freetabeme63 1 in Mathematics

i have to do an essay about them and i cant find something about them help me

2006-12-03 14:02:46 · 8 answers · asked by EYA 1 in Engineering

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