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Science & Mathematics - 17 September 2007

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2007-09-17 12:04:42 · 2 answers · asked by NONAME 2 in Mathematics

Which is a solution, colloid, or suspension?

1 smoke
2 paint
3 tap water
4 whipped cream

....and is combustible a chemical or physical property of matter?

im sooo confused =\ please help me out.

[if you can explain the answers, itd help. i want to learn...not just copy your answers...thanks so much!]

2007-09-17 12:01:59 · 2 answers · asked by Lina 4 in Chemistry

A car traveling 45 km/h slows down at a constant 0.50 m/s^2 just by "letting up on the gas." Calculate the distance the car coasts before it stops, the time it takes to stop, and the distance it travels during the first and fifth seconds. Please show/explain all work.

2007-09-17 12:01:03 · 1 answers · asked by nirmal 1 in Physics

A rectangular house which measures 20 m by 10 m has an electrical outlet at a corner of the house. An electric mower, connected by a cord to the outlet, can reach a maximum distance of 15 m. What is the largest area of lawn which can be cut?

2007-09-17 11:58:38 · 3 answers · asked by Anonymous in Mathematics

2007-09-17 11:57:11 · 6 answers · asked by briceboo@verizon.net 1 in Astronomy & Space

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. What is the average acceleration of this sprinter and how long does it take her to reach that speed? Please show/explain work.

2007-09-17 11:53:52 · 1 answers · asked by nirmal 1 in Physics

2007-09-17 11:52:56 · 10 answers · asked by tommiejbrothers 1 in Astronomy & Space

2007-09-17 11:52:04 · 7 answers · asked by snap 1 in Zoology

It seems relative easy for a free amino acid, but if I had a peptide arg-cys-tyr how do i determine which pka values (i.e. ionizable groups) to use? Are the terminal ends of this peptide included in the overall PI calculation as well?

2007-09-17 11:45:48 · 1 answers · asked by playag5 1 in Chemistry

blood capillaries and alveoli?

2007-09-17 11:41:08 · 5 answers · asked by Terri L 2 in Biology

is the following a compound? (a compound is when two or more elements are chemically combined)
when 2 samples of some elements are put in a jar together? is it combining it chemically? i am sort of confused. CALLING ALL SCIENTISTS!

2007-09-17 11:40:02 · 3 answers · asked by Jo 4 in Chemistry

aorta?

2007-09-17 11:39:58 · 1 answers · asked by Terri L 2 in Biology

disc?

2007-09-17 11:38:35 · 2 answers · asked by Terri L 2 in Biology

I was just curious if anybody has ever heard of/used the drug called Kuvan. It is in the proccess of being approved by FDA and I may potentially be in a study for this drug.

It's a drug for people who have the metabolic genetic disorder known as Phenylketonuria (or PKU). And if you have used this how did this work out for you (what were pros, cons, side effects etc)?

Thanks!!!

2007-09-17 11:38:19 · 2 answers · asked by BreezeGirl 4 in Medicine

2007-09-17 11:38:04 · 2 answers · asked by ComplexSimplicity 1 in Mathematics

2007-09-17 11:36:54 · 10 answers · asked by sammy1jo 1 in Paranormal Phenomena

2007-09-17 11:33:00 · 11 answers · asked by Brenda L 1 in Mathematics

i read about all this but forgot, then somehow we cycle into an ice age? theres something about having too much ocean that ends up leading to more sea based life forms, or photoplankton or something and ... i forgot, a little help herre?

2007-09-17 11:25:50 · 8 answers · asked by Anonymous in Earth Sciences & Geology

I divided the mass of sodium carbonate (in grams) by the volume of an acidic solution (10 mL) to find the ratio. So would the label for the ratio be g/mL? I'm not sure, it just looks kind of weird to me.

2007-09-17 11:25:37 · 1 answers · asked by Anonymous in Chemistry

1. -5(7y)
2. 12x - 3 + 6x
3. 43(1/43) + 1
4. 36jkm - 36mkj
5. (7^6 - 6^5)(8 - 8)
6. 5(w - 1/5) - w(9)

2007-09-17 11:25:15 · 2 answers · asked by Anonymous in Mathematics

what will happen to the alpha particles?

2007-09-17 11:22:27 · 4 answers · asked by s.weiss 1 in Chemistry

(a) What was the biker's average speed (in m/s) for the trip?
m/s




(b) Could you have just added the average speed values for the 3 different sections of the trip above and divided by 3 to get the correct answer? Please explain fully.

2007-09-17 11:22:05 · 2 answers · asked by ags101 2 in Physics

Please help me its due tomorrow and it took me the whole day and i couldnot solve this question,,,,,,Thank u ..

2007-09-17 11:21:34 · 4 answers · asked by lovely j 1 in Mathematics

I need to know where can i get the latest news on science or tech or u you can tell whats new in science

2007-09-17 11:20:55 · 4 answers · asked by fashion_dive_icon07 1 in Astronomy & Space

phylum

And also..

Marine diatom's phylum

Thanks! :)

2007-09-17 11:18:10 · 2 answers · asked by Emma 3 in Zoology

2007-09-17 11:15:23 · 7 answers · asked by brian h 2 in Astronomy & Space

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 33 m/s at an angle of 35° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is required for the angle to be reduced from 35° at launch to 17°?

2007-09-17 11:13:38 · 2 answers · asked by polly 1 in Physics

A cessna 150 aircraft has a lift-off speed of approximately 125 km/h.

a) What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 206m? Answer in units of m/s^2.

b) What is the corresponding take-off time? Answer in units of s.

c) If the aircraft continues to accelerate at this rate, what speed will it reach 32.8 s after it begins to roll? Answer in units of m/s.

2007-09-17 11:13:17 · 1 answers · asked by grouchy187 2 in Physics

I would like to figure out how high one has to fly to achieve weightlessness. Is the object in flight then free to travel into space, or would it be pulled back to Earth? Is there a set of calculations for determining altitude and gravitational pull?

2007-09-17 11:12:36 · 8 answers · asked by John S 2 in Astronomy & Space

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