Physics - May 2007

Does it have to take 8 minutes for it to be felt there?

2007-05-11 05:07:44 · 5 answers · asked by nimit_engineer 1

We need to know for a Physics project about living somewhere besides Earth.

2007-05-11 05:04:59 · 2 answers · asked by Anonymous

plese give me the answer im sitting here and school and desperate ♥

2007-05-11 04:43:36 · 1 answers · asked by Aysha. 3

2007-05-11 04:22:07 · 3 answers · asked by hdgrif 1

2007-05-11 03:49:32 · 9 answers · asked by hdgrif 1

The magnitude of the net force on the object is ______ N

a. 5
b. 10
c. 15
d. 25

2007-05-11 03:48:05 · 6 answers · asked by HMMMMM 1

if the intensity of the blue light is increased, the _________ will also increase.

a. maximum kinetic energy of the ejected electrons
b. number of electrons ejected per second
c. time lag between the absorption of blue light and the start of emission of the electrons
d. threshold frequency of the ejected electrons

2007-05-11 03:22:52 · 3 answers · asked by Anonymous

I just bought a brand new 500gb Western Digital Hard Drive for my computer. Well i acedently dropped it, and it hit concrete. It says in it, that warranty is invalid if it exceeds shock in excess of 350gs. The drive seems fine and works, but i am afraid that it could stuff up at any point.

My question, what is 350gs, and how can that be calculated into distance dropped and speed?
Weight= 0.79lb / 360grams
Height dropped = 1.5meters

Can this be worked out?

2007-05-11 02:16:52 · 2 answers · asked by James H 2

"Maxwell's Demon" is a "demon", metaphorically, that guards a "gate" between two gas-filled containers. When the demon sees a faster-than-average molecule flying towards the gate in one container, he opens the gate, letting the fast particle through. This process of selectively letting molecules through could raise the temperature of one container and lower the other's, violating the 2nd Law of Thermodynamics. Is such a "demon" possible? Isn't evaporation a natural example of a "demon?"

2007-05-11 02:13:54 · 3 answers · asked by DoctorEvo8 2

A force with magnitude (5.00 N/m^2)x^2 and directed at a constant angle of 31.0 degrees with the +x axis acts on an object of mass 0.250 kg as the object moves parallel to the x-axis. There are no other forces on the object that have components parallel to the x axis.

How fast is the object moving at x = 1.50 m if it has a speed of 4.00 m/s at x = 1.00 m?

2007-05-11 01:13:12 · 2 answers · asked by Anonymous

earth surface by digging it.What do you say?

2007-05-10 20:44:07 · 5 answers · asked by hash 1

2007-05-10 20:35:52 · 4 answers · asked by hash 1

2007-05-10 19:54:14 · 6 answers · asked by BIG G 2

A> use of natural resources must be controlled
B>during a physical change, total energy remains constant
C>a cautious approach to particle bombardment is recommended
D) solid-state rather than electron materials are used

2007-05-10 19:27:41 · 6 answers · asked by aliah_natasya2003 1

This is a question from a Conceptual Physics course I am taking and this question is from a chapter dealing with Electricity and magnetism.

2007-05-10 18:49:32 · 5 answers · asked by Joseph H 1

2007-05-10 18:36:47 · 31 answers · asked by som 1

2007-05-10 18:35:54 · 2 answers · asked by knashha 5

i think it is 1 / 2*(sqrt x+1) but i dont get how it would

2007-05-10 17:47:29 · 8 answers · asked by ph103 1

fact is stranger than fiction. Any one out there continuous of what is going on??? There is a mass suppression of knowledge where ideology controls the world. Monopoly men lie for profit!!!!!!!!!!!! 1. "Abiotic oil" I own oil property with a 8,000 ft deep oil drill. there is no existence of dinosaur poogass at that depth. methane gasses exists on every other planet. when methane is compressed it changes into oil !!! there is no oil shortage. 2."psychic channeling" Every thing is energy that never dies, it only changes form. Using the other 90% of your brain through meditation will prove to you the existence of god and the string theory!! It is easy to practice meditation channeling, that will open limitless possibilities. the brain is 9,000,000 times more complex than any electrical technology, and it can do more than you think!!!!!!!!! 3."Nikola Tesla" electromagnetic rail guns that fire projectiles at 40,000 fps that vaporize in the atomiser spraying molten uranium at targets making all war machine's obsolet

2007-05-10 17:39:00 · 5 answers · asked by Anonymous

I would like to build a water piston that will use water/gravity as force so I need to calculate the final net force on piston arm.

EXAMPLE: Piston head is 6.6 inches in diameter and stroke of 3 inches. A pipe 50 inches height x 0.5" inches Dia (total volume is 9.81 cubic inch) is connected to the cylinder inlet. Then with the help of gravity water is allowed in to the piston head causing it to go down due to the weight of water. So my questions are:

-I need a formula to calculate the weight or force of column of water pushing down inside the pipe in pounds

- Then with the resulting weight I need to calculate final force of the piston with the formula F= psi x Area., correct? Could you tell me the net force on the piston rod?

2007-05-10 17:15:39 · 3 answers · asked by Luis 2

what for you makes it agreeable?

2007-05-10 16:45:47 · 11 answers · asked by ô,ô 2

2007-05-10 16:25:20 · 4 answers · asked by wende.dormiens 1

Please someone explain this to me without refering to the concept of density!!!!!

2007-05-10 15:41:31 · 9 answers · asked by Anonymous

...will you be able to create a sound boom and shatter every piece of glass in a city like in the Simpsons?

2007-05-10 15:40:34 · 3 answers · asked by Carl K 2

For Science class in a few months I have to make an electric car. I'm not the greatest with things like this so if anyone has any pointers please IM me and then we'll talk some more later.

Thanks a bunch,(L)

2007-05-10 15:37:53 · 3 answers · asked by Anonymous

2007-05-10 15:13:20 · 4 answers · asked by Anonymous

i heard that we created a tiny chunk of metal from scratch because there was some new progress in atom research or something
and some dude in europe in working on reviving dead cells
like some zombie stuff haha
im not educated in any of this and am just wondering
if this is a dumn question and nothing but rumors, thats all you need to say
thanks and sleep well for those who sleep

2007-05-10 15:11:55 · 3 answers · asked by Anonymous

A star has an observer brightness of 0.01 Lumnosity. And temp. of 10,000K, how far away is this star (this will give you distance as multiple of the Earth-sun radii)?

Temp. 2.9*10^6/PeakWL

2007-05-10 14:57:12 · 1 answers · asked by Anonymous

2007-05-10 14:49:23 · 5 answers · asked by Anonymous

I know the signals reach the television via the antenna, but how do they travel to our televisions?

2007-05-10 14:18:51 · 8 answers · asked by Forsaken 2