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Science & Mathematics - 10 November 2007

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

I'm wondering if gymnosperm is synonymous with conifers

and...

angiosperm is synonymous with deciduous.

If not, can you explain the difference?

2007-11-10 12:11:20 · 2 answers · asked by Anonymous in Botany

I have to use it for my homework and it's the LAMEST thing ever because we weren't told what it was.....

2007-11-10 12:11:05 · 4 answers · asked by Melissa 2 in Biology

is it hindu mythology?in other words this is not the earth adam and eve originated on.

2007-11-10 12:09:02 · 6 answers · asked by gumby7k 2 in Other - Alternative

Make sure you give me an equation too.

2007-11-10 12:08:07 · 15 answers · asked by Kaya J 1 in Mathematics

0

2007-11-10 12:04:22 · 7 answers · asked by jlmeritt 1 in Mathematics

I am always tired and think I may have this. I do not have a doctor appointment till dec 17 and was wondering if until then it would be safe to just eat a pill that is normally given to someone with b12 deficiency. Also is it safe to do the same thing for iron deficiency and how much of that is perscribed to patients?

2007-11-10 12:04:19 · 5 answers · asked by Anonymous in Medicine

I think it originally belonged to the protista kingdom, but was later switched to fungi.

Does anyone know which kingdom they are in now?

2007-11-10 12:02:13 · 7 answers · asked by Anonymous in Biology

When aqueous silver nitrate and sodium
chromate solutions are mixed, solid silver chromate forms in a
solution of sodium nitrate. If 257.8 mL of a 0.0468 M solution of
silver nitrate is added to 156.00 mL of a 0.0950 M solution of
sodium chromate, what mass of silver chromate (M = 331.8 g/mol)
will be formed?
This is a limiting-reactant problem because the amounts
of two reactants are given.
Strategy:
(1) Write the balanced equation.
I have AgNO3 + Na2CrO4 --> Ag2 CrO4 + NaNo3
(2) Calculate the number of moles of each reactant.
.2578L x .0468M = .01207mols AgNO3
.156L x .0950M = .01482mols Na2CrO4
(3) Determine the limiting reactant.
AgNO3
(4) Calculate the moles of product.
.01482/.01207 = 1.228mol
(5) Convert moles of product to mass of the product using molar mass
1.228mol x 331.8g/mol = 407.4g Is this right? It seems like a lot.

2007-11-10 11:59:43 · 1 answers · asked by Heather L 1 in Chemistry

CD = 4 squared 8?

2007-11-10 11:58:10 · 2 answers · asked by Jen 4 in Mathematics

What would be the outcome if you have a black hair asian with brown eyes female adding a red hair with green eyes (orange + fair) caucasian male together?

would the child have brown hair and hazel eyes??

and is it true that all caucasians are born with blue eyes, but it changes as they are exposed to light?

2007-11-10 11:55:31 · 18 answers · asked by chopzsite 2 in Biology

I have a test soon and I don't get it... Can you help me?
I have a couple questions i don't know how to solve... I tried for hours and hours and i still don't get it.. Can u solve it and show your work, so i can figure out how to solve it or explain how to solve it?
3(w+2) = 2(w-1)
6y + 7 = 3 + 2(y-4)
5x - 8x = 3(x+4)
5t - 3t = 5 - 3(t+5)
Thx.

2007-11-10 11:53:53 · 9 answers · asked by Person 2 in Mathematics

Any detox ideas??

2007-11-10 11:53:00 · 4 answers · asked by Becky 2 in Medicine

1.identify the variables,coeffients and constants in the expression -6x-xy+60.
2. Jen takes 7 mins.more to complete an illustration than Jon. The total time taken by both of them is 6 hours. Form an algebraic expression to express this and identify the variable, constant and coeffient of the expression.
3.simplify the expression 7x^2-4y+3x^2+5y+2 and evaluate it for x+3 and y=9. identify the variables,constants and coefficients in the simplified expression.
1. what # is 15%of108?
2. the sum of three consective even #s is 144;what are the numbers?
3. a man buys 5 dvds for $66.34,including 7% sales tax. how much did ea.dvd cost?
4. the area of a rectangle is 45 square cm. if the length is 4cm greater than the width, what are the dimension of the rectangle?

2007-11-10 11:50:34 · 4 answers · asked by A S 1 in Mathematics

find in terms of (PI) the solution for:
sin5x + six = 0

i have worked it dwn to this step by using the 'factor formula'..
2sin3xcos2x=0
now i dnt kno how to simply it..can sum1 help plz..thnxs!

2007-11-10 11:47:35 · 3 answers · asked by clueless 1 in Mathematics

2007-11-10 11:45:47 · 7 answers · asked by Anonymous in Astronomy & Space

2007-11-10 11:45:44 · 2 answers · asked by Anonymous in Mathematics

As i begin counting the number of people that I am direct desendants of the results are staggering and I soon reach a number which is greater than the number of humans that have ever lived. Example: It took 2 parents to make me, 2 to make each of them, and so on and so on...represented

2 to the 30th power(30 generations back)= >1Billion
30 generations before that=>1Billion sets of 1Billion
30 generations before that=>1billion sets of 1 Billion sets of 1Billion
...one could continue 30 generations at a time and pass the number of humans that have ever been on the planet.(Note the number calculated is not all my ancestors but just that generation's count....adding the generations together creates really huge numbers of direct ancestors that doesn't seem possible)

How can this be?

2007-11-10 11:43:44 · 3 answers · asked by Rick H 1 in Other - Science

Me and a couple of friends have been on a subject. Time. Whether time can be controlled is almost answered. After years of research and what took scientist years to figure out, took us only days. The riddle that has been sitting in our mind for years is now so close to bieng answered.

2007-11-10 11:42:56 · 3 answers · asked by William A 3 in Physics

2007-11-10 11:42:32 · 12 answers · asked by Dwayne Carter Jr. 2 in Astronomy & Space

Which will last longer - this rechargeable battery pack (the cells are in parallel): (http://www.radioshack.com/product/index.jsp?productId=2062121&cp=&sr=1&origkw=rc+battery+packs&kw=rc+battery+packs&parentPage=search)

or 6 energizer 1.2V, 2500mah rechargeable batteries in series?

The power supply will be routed to a 5V regulator, which, if it gets below 5.7V, will constantly reset (this is the "brownout protection; the supply is for powering a BS2e microcontroller, and other devides connected to a robot I am making. The brownout protector is internal in the microcontroller).

2007-11-10 11:37:12 · 3 answers · asked by Quackmaster7000 1 in Engineering

2007-11-10 11:34:30 · 4 answers · asked by :) 5 in Biology

If escape velocity from Earth is 25,000 mph and the moon is 250,000 miles away, shouldn't it only take 10 hours to get there?

2007-11-10 11:30:50 · 11 answers · asked by leo b 2 in Astronomy & Space

What is %10 of $45?

And how would you do that on a calculator?

2007-11-10 11:29:32 · 8 answers · asked by earthball50@sbcglobal.net 3 in Mathematics

a)F(x)=1/(x-2)
b)F(x)=square root(3-x) - 4
Determine domain and range.show your steps

2007-11-10 11:29:10 · 4 answers · asked by Val K 2 in Mathematics

I am in Cape Canaveral and some of the people say there is a shuttle launch, but on NASA's website I can't find anything saying ther is one.

2007-11-10 11:28:46 · 5 answers · asked by N 1 in Astronomy & Space

I have a social studies booklet to do and just need some answers for a few questions. First, how does climate affect prairie grain crops in Canada? What does too much rain cause? What does not enough rain cause?
Which countries buy grain from Canada?
And finally, are these places all land form types of regions: Swiss Alps, Sahara Desert, and the Great Lakes?

Thanks to anyone that helps =]

2007-11-10 11:28:22 · 3 answers · asked by Anonymous in Agriculture

A box of mass M is attached to a string and is pulled with a force F along a rough surface having a coefficient of kinetic friction of KF. If the tension in the string is doubled, what will happen to the radial and tangential components of acceleration?

2007-11-10 11:26:13 · 3 answers · asked by zircon 2 in Physics

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