Science & Mathematics - 10 November 2007

Find the slope of the tangent line to the curve:

sqrt(2x + 4y) + sqrt(3xy) = 14.6

at the point (3, 8)

2007-11-10 06:53:22 · 2 answers · asked by m_mays89 2 in Mathematics

2007-11-10 06:51:03 · 4 answers · asked by Anonymous in Mathematics

If a ball is thrown vertically upward from the roof of 32 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t) = 32 + 80t - 16t^2 .

What is the maximum height the ball reaches?

What is the velocity of the ball when it hits the ground (height = 0 )?

2007-11-10 06:50:45 · 2 answers · asked by m_mays89 2 in Mathematics

i need to hand this in by monday

2007-11-10 06:50:24 · 4 answers · asked by Jessica 1 in Mathematics

Please Yahoo: Feature this question, it is very important.

All sorts of research point out that organic food is healthier for people and better for the environment. No one can scientifically refute that.

If more people can see one important value of organic products which is higher nutrition, more people would be willing to spend a little more on organic foods.

But even though a lot of producers and dealers believe in the goodness of organic products, they don't want to go through the certification process because it can be very expensive.

People: this is what they mean by "scam" ... the benefits of organic foods ARE real. But farmers think it's unfair to be charged ridiculous amounts in fees to be "USDA Certified Organic". They feel they are being charged to do something good for the people and the planet.

Labelling a product "organically grown" doesn't always cut it. People trust "certified".

What do you suggest to make the organic certification more affordable?

2007-11-10 06:45:54 · 4 answers · asked by davnic017 2 in Agriculture

The Sun emits electromagnetic waves (including light) equally in all directions. The intensity of the waves at the Earth's upper atmosphere is 1.4 kW/m^2. At what rate does the Sun emit electromagnetic waves? (In other words, what is the power output?)

2007-11-10 06:43:59 · 1 answers · asked by Jerry M 1 in Physics

two 6 sided dice being rolled. the prob of 2 numbers differing by more than 2?

2007-11-10 06:43:29 · 1 answers · asked by parev 1 in Mathematics

I was wondering sine space is vacuum? How does it propel itself and changes direction when there is no air to thrust itself?

2007-11-10 06:41:03 · 8 answers · asked by biakk91 1 in Astronomy & Space

Also: I know that in Base 8, 1 plus 7 = 10. So, in Base 8, is "10" pronounced "ten" or "eight"?

2007-11-10 06:39:51 · 2 answers · asked by canucklehead1951 4 in Mathematics

gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 15 years from now.

2007-11-10 06:39:21 · 2 answers · asked by Cary C 6 in Mathematics

A pendulum of length L1 has a period T1 = 0.9 s. The length of the pendulum is adjusted to a new value L2 such that T2 = 1.1 s. What is the ratio L2/L1?

2007-11-10 06:37:04 · 2 answers · asked by Anonymous in Physics

help me! :)

2007-11-10 06:34:06 · 4 answers · asked by Mariko Y 1 in Biology

i dont know whether to believ that telekinesis is real or not. can someone help me out?

2007-11-10 06:32:47 · 12 answers · asked by Anonymous in Parapsychology

Could someone please explain how to solve the following problem? Thanks.

A baseball player running at 9.5 m/sec between bases decides to slide the remaining 3.2 meters into home plate. If the mass of the baseball player is 75 kg, calculate

(a) the force of friction
(b) the coefficient of friction

2007-11-10 06:32:25 · 1 answers · asked by labelapark 6 in Physics

a. urogenital
b. gastrointestinal
c. respiratory
d. skin
e. they are equally used as portals

2007-11-10 06:31:01 · 4 answers · asked by Anonymous in Biology

2007-11-10 06:30:49 · 1 answers · asked by (ƸӜƷ) 1 in Physics

hurry!

2007-11-10 06:28:56 · 4 answers · asked by dT 1 in Botany

How do I solve the following problem? Could someone please provide an explanation instead of giving me a number? Thanks.

A boy on a bicycle is pedaling along a straight and level road at 26.30 km/hr. When he stops pedaling he finds that he can travel a distance of 150 meters before stopping. Find

a. his speed in m/sec when he stops pedaling
b. his acceleration while coasting
c. the coefficient of sliding friction

2007-11-10 06:26:06 · 1 answers · asked by labelapark 6 in Physics

i am doing a report on tigers but i dont know were to start. can u tell me alittle about them. please & thank u!

2007-11-10 06:25:48 · 9 answers · asked by cgirl 3 in Zoology

What would be the best book on volcanos for a under grad geography major who loves volcanos?

2007-11-10 06:22:57 · 2 answers · asked by love_to_knit! 3 in Earth Sciences & Geology

I'm considering going into that field of medicine after high school. I'm looking for any advice concerning eduation paths and colleges. Thank you

2007-11-10 06:22:30 · 2 answers · asked by gabrielle 1 in Medicine

can the carosene be blocked from flowing into the engine so the wind can put out the fire?

2007-11-10 06:19:53 · 5 answers · asked by snippi f 2 in Engineering

Use implicit differentiation to find the slope of the tangent line to the curve:


-2x^2 + 3xy + 4y^3 = -5 at the point (3,1).

2007-11-10 06:19:30 · 4 answers · asked by m_mays89 2 in Mathematics

A sound wave with intensity 25 mW/m^2 interferes destructively with a sound wave with intensity 28 mW/m^2. What is the intensity of the superposition of the two?

2007-11-10 06:19:15 · 3 answers · asked by Anonymous in Physics

Please explain

2007-11-10 06:12:38 · 4 answers · asked by Bobby S 3 in Mathematics

2007-11-10 06:10:25 · 4 answers · asked by Anonymous in Astronomy & Space

The book defines definition as

a partition of an interval [a, b] on the real line is a finite sequence of the form

a = x0 < x1 < x2 < ... < xn = b.

So does this basically mean that a partition of interval [a,b] is a subinterval within [a,b]?

in others words, does it mean an interval within an interval?

2007-11-10 06:10:01 · 2 answers · asked by Anonymous in Mathematics

2007-11-10 06:04:51 · 3 answers · asked by Anonymous in Other - Science

Find f(a + 3) when f(x) = x square - 4

2007-11-10 06:04:50 · 4 answers · asked by Cary C 6 in Mathematics

ABCD represents four integers such that the following arrangements are square numbers:
CABA
DCBA
DACB
What integer does each letter represent?

2007-11-10 05:59:26 · 6 answers · asked by Maximum Ride 2 in Mathematics