Science & Mathematics - 7 December 2006

16) Boyle's law states that _______.

a) the temperature of a gas varies inversely with pressure
b) the volume of a gas varies directly with pressure
c) the temperature of a gas varies directly with pressure
d) the volume of a gas varies inversely with pressure

2006-12-07 15:47:57 · 4 answers · asked by me 1 in Chemistry

13) If a sealed syring is heated, in which direction will the syring plunger move?

a) in
b) out
c) The plunger will not move.
d) The direction cannot be predicted.

2006-12-07 15:45:16 · 2 answers · asked by me 1 in Chemistry

Okay, I think I have a better description of what I was getting at before now. When you read about the perception of passing time at light speed, there are descriptions of, for example, something moving at light speed observing something that isn't and vice versa and their perceptions being different to reality. BUT, in these cases, the people at light speed are actually passing through time at a different rate, I know this is to do with the fact that they are travelling but... Oh dear, I am confusing myself more now! Somewhere in that is something to do with flies perceiving things as faster than we do but I don't know if i am making enough sense for anyone to explain it to me!

2006-12-07 15:44:32 · 8 answers · asked by melissa v 2 in Physics

2006-12-07 15:43:34 · 4 answers · asked by Lex U 1 in Chemistry

What would be the partial derivative with respect to y for the following function: f(x,y)=x^2sin(3xy)?

I think I should use the product rule and treat x as a constant, but beyond that I am lost.
<<>> :)

2006-12-07 15:41:02 · 5 answers · asked by cheezo12 1 in Mathematics

If we can make satellites orbit our planet, can you apply the same idea to magnetism and fire a piece of metal at the perfect velocity, in a vaccuum, to make it orbit a magnet?

2006-12-07 15:40:17 · 7 answers · asked by Curious George 1 in Physics

its conceptual physics please help me!!!!!!!!!!!!!!!!!!!

2006-12-07 15:37:58 · 8 answers · asked by Anonymous in Physics

has a mass of 2.25 lb mass?


a. 90 lbs

b. 70 lbs

c. 56 lbs

d. 63 lbs

2006-12-07 15:36:47 · 5 answers · asked by soccergrl8128 1 in Mathematics

I need to just draw an animal from the galapagos that has evolved to better adapt.
Just put the name of the animal and ill image search it.
Along with this i need a few traits of the animal...
(beak size, foot size, eye placement, etc.)
thanks to anyone who answers

2006-12-07 15:35:47 · 4 answers · asked by shurdonky 2 in Zoology

54x³ +2y³

2006-12-07 15:34:32 · 3 answers · asked by Sally 1 in Mathematics

When n is divided by 14 the remainder is 10. What is the remainder when n is divided by 7? The correct answer is 3. Shouldn't it be 20 instead? Hmmmm . . .

2006-12-07 15:34:06 · 6 answers · asked by Anonymous in Mathematics

here is the problem

The Peoria Bottle Company manufactures bottles from mixtures of recycled white, brown,
and green glass and they are considering purchasing from two new recycling sources. The
depots on the North End and on the West Side have bottle collection days, and the bottles
collected in the North End are consistently in the mixture 92% white glass, 6% brown glass,
and 2% green glass, while the bottles collected on the West Side are consistently in the
mixture 70% white glass, 20% brown glass, and 10% green glass. The company wants to
determine what bottle types { i.e., what bottles of differing proportions of white, brown and
green glass { can be manufactured from the use of these two sources alone. (Remark: It is
unproffitable to attempt to sort the recycling.)

After reading this does any one know why the glass has to be between 2 and 10 percent.

2006-12-07 15:31:15 · 1 answers · asked by Anonymous in Mathematics

The question is

[A recipe reqires 2.5 cups of juice concentrate for every 4 cups of water. How much Juice is required to fill a 32.5-cup punch bowl?]

I know the answer is 12.5 cups because the book gave me options. but i dont know how to show my work to get to it.

2006-12-07 15:28:24 · 11 answers · asked by Marissa 2 in Mathematics

I dont know how to solve this problem:

With what initial velocity must an object be thrown upward (from ground level) to reach the top of the Washington Monument (approximately 550 feet).
acceleration due to gravity: a(t) = -32 feet per second per second (neglect air resistance)

2006-12-07 15:28:14 · 5 answers · asked by Anonymous in Mathematics

2006-12-07 15:27:19 · 6 answers · asked by Ahmad Aizuddin Sudari 1 in Physics

The question is

[A recipe reqires 2.5 cups of juice concentrate for every 4 cups of water. How much Juice is required to fill a 32.5-cup punch bowl?]

I know the answer is 12.5 cups because the book gave me options. but i dont know how to show my work to get to it.

2006-12-07 15:27:08 · 6 answers · asked by Marissa 2 in Mathematics

An object moves along a line so that its velocity at time t is v(t)= 1/2 + sin2t feet per second. Find the displacement and the total distance traveled by the object for 0 less than or equal to t less than or equal to 3pi/2.

Displacement:_________ feet.

Total distance traveled: ________feet.

I have found the displacement to be 3.35619449019 but, I can not find the total distance traveled. Can someone please help me with this.... Thanks

E

2006-12-07 15:26:12 · 3 answers · asked by wasatchjeeper 2 in Mathematics

2006-12-07 15:25:33 · 6 answers · asked by Anonymous in Biology

2006-12-07 15:24:55 · 1 answers · asked by Ahmad Aizuddin Sudari 1 in Physics

how do you figure this problem out?
the cube root of 5 divided by the cube root of X^4?

2006-12-07 15:24:19 · 6 answers · asked by Anonymous in Mathematics

I think I have a ruby or possibly a pink sapphire. Does anyone know how to tell distinctively the difference between a ruby/pink sapphire and a...well rock. Also, it's about 2 pounds, and i bet about 1.3 or so is flawless. How much money would that be worth?

2006-12-07 15:23:46 · 7 answers · asked by ibanezplayer9 2 in Earth Sciences & Geology

2006-12-07 15:21:54 · 9 answers · asked by Taylor M 1 in Geography

A cylindrical hole of radius 3 is bored horizontally, exactly through the center of a solid sphere of radius 5. Use the washer method to find the volume of the remaining portion of the sphere.

I took the inner radius of the washer to be 3, and the outer radius to be 5. Doing it this way I get the area to be:

pi(5)^2 - pi(3)^2 = 16pi

However there is no formula there to set up an integral to get the volume, so I must be doing something wrong but I'm not sure what.

2006-12-07 15:21:51 · 2 answers · asked by gotejjeken 1 in Mathematics

If you eliminate wind drag would a person and a tank hit the ground at the same time.

2006-12-07 15:13:12 · 8 answers · asked by rubenff2000 1 in Physics

2006-12-07 15:10:34 · 3 answers · asked by bobby_albert007 1 in Mathematics

2006-12-07 15:04:43 · 11 answers · asked by Anonymous in Astronomy & Space

it is a math question

2006-12-07 15:03:25 · 7 answers · asked by sisj1249 1 in Mathematics

Maybe this will help me grasp the concept of trigonometry :-/

2006-12-07 15:00:57 · 9 answers · asked by Maziar S 3 in Mathematics

2a² +12a +18

2006-12-07 14:58:02 · 6 answers · asked by Sally 1 in Mathematics

2006-12-07 14:56:15 · 9 answers · asked by Alex Bogue 1 in Geography