Physics - November 2006

originates from an underwater diver, has a radius of 8 mm at some depth h. When the bubble reaches the surface it has a radius of 9.6 mm. Assume the temperature of the air and the bubble remain constant and that acceleration of gravity is 9.8 m/s^2.

1) Determine the this depth h of the diver in units of m, AND
2) Determine the absolute pressure at depth h in units of Pa.

2006-11-21 08:11:52 · 2 answers · asked by Mariska 2

explain why a centripetal force does not work on a circularly moving object?

2006-11-21 08:01:04 · 2 answers · asked by macky 1

The project is to build a box which can keep the warm water warm in the cold temperature and cool water cool in hot temperature.
Any ideas what I should do to my box?

2006-11-21 07:41:06 · 8 answers · asked by Daniel 2

I have no idea how to do this problem!
Here is a website of it...

http://www.google.com/search?client=safari&rls=en&q=%22a+nonlinear+spring+is+compressed+horizontally.+The+spring+exerts+a+force+that+obeys+the+equation%22&ie=UTF-8&oe=UTF-8

You want to look at the actual document, and not the HTML.

If you can help run me throught it, that would be fantastic!

For "A" i tried to use the eqution F = -kx to solve (using the second graph), but im not sure if that is allowed.

Totally lost!

Any help would be great!

2006-11-21 07:39:09 · 2 answers · asked by Anonymous

An inflated balloon occupies a volume of two (2) liters. The balloon is tied with a string and weighted down with a heavy stone. What is its volume when it reaches the bottom of a pond 5.2 meters deep? Assume the atmospheric pressure is equal to 1 atmosphere and that one atmosphere will support a column of water 10.4 meters high.

Thank You

2006-11-21 07:23:57 · 3 answers · asked by rgrege g 1

we learned that the net force is zero for a car traveling along a level road at constant velocity, and in this chapter we learned that work is done in such a case. Your friend asks “how can work be done when the net force equals zero? Explain

2006-11-21 07:18:09 · 5 answers · asked by macky 1

everybody is an asshole.

2006-11-21 06:21:51 · 10 answers · asked by anonymous2372000 1

If not, what is changed? is it the distance that the mass falls?

2006-11-21 06:12:46 · 1 answers · asked by Anonymous

A meter stick suspended at one end by a .365 m long light string, is set into oscillation. The acc. of gravity is 9.8 m/s^2. Determine the period of oscillation. Answer in units of s.
My INCORRECT solution:
L=1.365
g=9.8 m/s^2
T=2pi(^2root L/g)
T=2pi (^2 root 1.365/9.8)
T=2pi (^2root .1392857143)
T=2pi (.3732100136)
T=2.344947674 This is incorrect!!!

Problem #2
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 24.9786 cm on a spring with a apring constant of 15.4144 N/m. The mass of the bananas is 41.4019 kg. What is the speed of the bananas? Answer in units of m/s.
My INCORRECT solution:
w= ^2 root (k/m)
24.9786 cm = .249786 m amplitude
15.4144 N/m spring constant
41.4019 kg mass
w=^2 root 15.4144 N/m / 41.4109 kg
w=^2 root .3723114
w=.6101732 This is incorrect!!!
Any and all help is appreciated. I would like to see it worked out.

2006-11-21 05:59:27 · 2 answers · asked by exxavier 2

When an electron moves from one orbital to another, it basically teleports because it can't exist between orbitals. But if that happens instantaneously, it would effectively travel faster than light over that small distance--infinitely fast, in fact. Does the electron reappear some time later as constrained by the speed of light? If so, where is the electron in the meantime, since it can't be between orbitals? If not, how is it allowed to travel faster than light?

2006-11-21 05:27:38 · 3 answers · asked by rainfingers 4

what will happen if imagine we could dig a tunnel from one side of the earth and came out through another and then drop a stone into it. Will it come out through the other side? What will be the result?

2006-11-21 05:09:02 · 8 answers · asked by AIRY 1

I was reading about Quantum physics and this really puzzled me. How can an electron move the speed of light? Of course, I'm assuming an electron has mass whereas a photon does not, and I understand that the issues is more about all possible trajectories of an electron needing to be averaged to determine it's possible position and velocity. But still, wouldn't some trajectories be nullified due to the inability of anything with mass to travel the speed of light? Or maybe I'm just a moron and my question is flawed!

2006-11-21 04:56:02 · 8 answers · asked by T.J. 1

in an a.c circuit with an load....the voltage across the load is constantly varying as a sine or cosine function....the current is also varying...in that case the power across the load is also varying...
this should obviously reflect in the change of intensity of the functioning of the load...which does not happen..
plz, explain the reason...

2006-11-21 04:36:52 · 6 answers · asked by Anonymous

2006-11-21 04:32:14 · 7 answers · asked by svly 1

Please help me find details. I am trying to understand the process by which Beta radiation interacting with an atom will cause the discharge of the bremsstrahlung x-rays. I am doing an experiment where beta radiation that is absorbed by a certain material by the process of beta particles interacting with the atoms causes bremsstrahlung x-rays to be emitted. Help me please. Thanks

2006-11-21 04:21:59 · 2 answers · asked by The One Truth 4

2006-11-21 04:12:52 · 2 answers · asked by ndotela 1

question about quantum mechanics in physics

2006-11-21 03:51:55 · 2 answers · asked by ndotela 1

When an astronaut spins when doing acrobatic aboard an orbiting space vehicle, what point does the body spin about?

2006-11-21 03:47:45 · 6 answers · asked by masha 1

2006-11-21 03:46:54 · 12 answers · asked by John H 1

2006-11-21 03:42:30 · 7 answers · asked by nikhil d 1

2006-11-21 03:10:32 · 8 answers · asked by jonafonwoss 2

2006-11-21 02:22:54 · 1 answers · asked by chica1012 2

And time just a value indicating the pressure of the warp?

2006-11-21 02:18:18 · 3 answers · asked by goring 6

at the same time regardless of their mass. But we do not see this in the case of feather and stone...Plz explain!

2006-11-21 02:17:21 · 20 answers · asked by Payal V 2

2006-11-21 01:56:00 · 6 answers · asked by john 3

If you jump from an airplane, how many seconds/what drop distance before you are travelling at maximum speed.

I understand the maximum freefall speed is around 120mph.

2006-11-21 01:39:41 · 4 answers · asked by Poor one 6

Did any one ever prove that space is a complete vaccum?

2006-11-21 01:38:16 · 4 answers · asked by goring 6

Okay, the project is in physics...It's about the center of gravity...
I'll take care of this one...

Anyways, i need to have an idea about a "balancing" project...
A project that requires balance among all objects...
(eg: balancing balls,sticks *how is this possible anyway?*)
Any ideas?Any sites to refer? How to make one?

2006-11-21 00:41:39 · 4 answers · asked by leianna_mae 2

Will someone describe them. in simple words?

2006-11-21 00:22:44 · 3 answers · asked by ? 2

recently i read that as earth has escape velocity of 11.2 km/sec, hence,as theair molecules do not have that much velocity,they do not escape,...and thats why there is atmosphere on earth.....but wat about in asteroids???they have more escape velocity...smthng like 238kms/sec ....why is there no atmosphere there???..and so is it for many planets

2006-11-21 00:08:04 · 7 answers · asked by Nits 1