Science & Mathematics - 25 November 2007

2007-11-25 10:13:17 · 5 answers · asked by Oca 3 in Engineering

9/k+8/k

2007-11-25 10:13:04 · 3 answers · asked by michael s 1 in Mathematics

So a barel of crude oil = how many gallons of gas

2007-11-25 10:12:36 · 4 answers · asked by Taylor T 2 in Other - Alternative

2007-11-25 10:10:30 · 4 answers · asked by dasha 2 in Other - Science

Imagine the Russians Get to mars first ? How will that impact the U.S.A ? Because i mean the race to the moon and the U.S.A got their first

2007-11-25 10:10:19 · 7 answers · asked by Anonymous in Astronomy & Space

2007-11-25 10:08:28 · 2 answers · asked by Anonymous in Botany

2007-11-25 10:06:45 · 4 answers · asked by Anonymous in Mathematics

i need to know this because my science project is due tomorro and i choose a alarm system as my project....i had a way to do it but i left the book with the instuctions in school! plz i need help its due tomorro!!!!!

2007-11-25 10:01:35 · 2 answers · asked by Anonymous in Engineering

If everything was bubbling and boiling away. . . y;know.

I just thought of this after boiling the kettle dry , lol. Why is it when it's YOUR turn to mash, the kettle doesn't have enough water in it?

2007-11-25 09:59:06 · 18 answers · asked by ~☆ Petit ♥ Chou ☆~ 7 in Earth Sciences & Geology

An object has a mass of 40 kg and a velocity of 10m/s. It collides with two masses (each mass 40 kg) attached to each other and moving with a velocity of 2 m/s. All three objects are stuck together after collision. What is the velocity of the three masses after collision?

2007-11-25 09:57:53 · 1 answers · asked by Anonymous in Physics

Like Zoology, WIldlife Biologist What

2007-11-25 09:53:33 · 3 answers · asked by landenjms 2 in Zoology

2007-11-25 09:52:08 · 3 answers · asked by 5445 1 in Chemistry

well i had a dream about it last night

2007-11-25 09:47:47 · 4 answers · asked by Anonymous in Weather

2007-11-25 09:47:06 · 2 answers · asked by Hmmm 1 in Mathematics

like say the moon could it sustain an atmosphere?

2007-11-25 09:45:03 · 5 answers · asked by Anonymous in Astronomy & Space

Such as f(x)= -2x+5

2007-11-25 09:42:39 · 12 answers · asked by Rachel L 2 in Mathematics

A poster is to contain 102 square cm of printed matter, with margins of 5.5 cm each top and bottom and 2.5 on each of the sides. Find the minimal cost of the poster if it is to be made of material costing 12 cents per square cm.

2007-11-25 09:41:37 · 1 answers · asked by bball10010 1 in Mathematics

Find the rectangle of largest area that can be inscribed in a semicircle of diameter 73, assuming that one side of the rectangle lies on the diameter of the semicircle

What is the largest possible area?

2007-11-25 09:38:13 · 1 answers · asked by bball10010 1 in Mathematics

Verify equation is an identity.

cos(pie/2 + x) = -sinx

Find the local extrema of f

x^2/3(x-7)^2 + 2

2007-11-25 09:36:03 · 1 answers · asked by Doc. Ock 3 in Mathematics

http://flickr.com/photo_zoom.gne?id=2063193977&size=o

Thanks!

2007-11-25 09:35:53 · 1 answers · asked by lirael1019 1 in Mathematics

What are 3 factors any planet needs to have seasons?
I think 2 might be tilt and sun distance? please correct me if i am wrong. Otherwise i really only need one more factor
thanks =]]

2007-11-25 09:34:01 · 4 answers · asked by somegal113 2 in Weather

How much electricity (in kilowatt hours) does it take to produce one ton of aluminum, not counting the energy required to keep the furnace hot?

2007-11-25 09:32:09 · 2 answers · asked by JitterBug589 3 in Engineering

2007-11-25 09:30:50 · 3 answers · asked by ... 2 in Other - Science

An amusement park ride consists of a rotating vertical cylinder with rough canvas walls. The floor is initial about halfway up the cylinder wall. After the rider has entered and the cylinder is rotating sufficiently fast, the floor is dropped down, yet the rider does not slide down. The rider has a mass of 50 kg, the radius of the cylinder is 5m, the angular velocity of the cylinder when rotating is 2 radians per second, and the coefficent of static friction between the rider and the wall is .6

a. calculate the centripetal force on the rider when the cylinder is rotating and state what provides that force

b. Calculate the upward force that keeps the rider from falling when the floor is dropped down and state what provides that force

c. at the same rotational speed, would a rider of twice the mass slide down the wall? explain

2007-11-25 09:26:49 · 1 answers · asked by icnthnkvasnjr 1 in Physics

I found some, but no really good ones.

2007-11-25 09:24:34 · 16 answers · asked by Faedra 3 in Paranormal Phenomena

im going to use a 9 volt battery and attach two electrical wires to the two sides and attach those to two nails.will this work as impressed current?

2007-11-25 09:21:38 · 2 answers · asked by Speeding D 4 in Engineering

name 5 ( i have the other 5)

2007-11-25 09:14:34 · 2 answers · asked by Anonymous in Biology

Do you agree with this statement that monkeys in captivity are more like pet...
If yes why,,, explain it further...

thanks

2007-11-25 09:14:10 · 2 answers · asked by G 1 in Zoology

here is the question -

A block of mass 15 kg stars from rest and slides a distance of 6 m down an inclined plane making an angle of 40 degrees with the horizontal. The coefficient of sliding friction between block and plane is 0.4.
The acceleration of gravity is 9.8 m/s^2.

a. What is the net force on the block along the incline? Answer in units of N.

b. What is the speed of the block after sliding 6 m? Answer in units of m/s.

c. What would be its speed if friction were negligible? Answer in units of m/s.

Your HELP is much APRRECIATED

THANK YOU

2007-11-25 09:14:03 · 2 answers · asked by mimi j 1 in Physics

atom
true or false

2007-11-25 09:13:11 · 2 answers · asked by Anonymous in Physics