Physics - August 2007

Can any one provide me a equation showing a relationship of radius/diameter and Rotation speed taht always equals 1 G at the circumference. Much appreciated ;)

2007-08-27 19:45:55 · 3 answers · asked by Anonymous

-Acceleration Due to gravity is it sill 9.88 m/s/s
-air pressure (more because of no centripetal force?)
-How much would I wiegh? my current wieght is 80 Kg
-Any thing else u want to put in.

2007-08-27 18:40:50 · 4 answers · asked by Anonymous

2007-08-27 18:31:28 · 11 answers · asked by rohn 1

2007-08-27 18:29:38 · 2 answers · asked by Anonymous

it already has been in a lab in Switzerland. What are the positives and negatives of creating it, if it can be done?

2007-08-27 17:35:11 · 6 answers · asked by Anonymous

If you knew everything about the past and present, could you use that information to predict the future? Basically what I'm asking is that are any actually randomness in the universe, or do we just see it as random because we can not collect enough data to understand it? Please explain your answer.

2007-08-27 17:05:09 · 12 answers · asked by ☢☠☣☢☠☣ 3

all you have is:

-a long pipe with a valve at the end that dispenses water in drops (buret)
- a meter stick

-clamps, ring stand etc (not important)

thats it, now confirm what we already know: acceleration due to gravity is -9.81 m/s/s

the problem for me is, there is no way to measure time, therefore we cannot find time or final velocity.

2007-08-27 16:59:03 · 4 answers · asked by Hi My Name is 2

2007-08-27 16:36:46 · 6 answers · asked by Anonymous

The current through two identical light bulbs connected in a series circuit is 0.25 Amps. The voltage across both bulbs is 100V. What is the resistance of a single light bulb.

2007-08-27 16:24:01 · 4 answers · asked by muney_mike 2

2007-08-27 16:20:57 · 6 answers · asked by Anonymous

would you either fix what happen to you or would you fix some thing that happened in the world

2007-08-27 16:17:12 · 9 answers · asked by Anonymous

ok so my physics teacher was talking about the formula and i sorta... dosed off ( im a baaaad student =( . can't pay attention ) anyways i wuz writing down notes and he gave this example

sqrt 2*30 / 980 cm/s = 2(.255) = .510 s

ahhhh, any physics buff students out that can help me ? im stuck because i have 30 for d , bu i don't know how he got from sqrt 2*30 / 980 cm/s to 2(.255)

i know its my fault for not being able to pay attention, so if you can help i'd be reaaally really grateful. thakn you ~~~!!!! ^-^

2007-08-27 16:16:20 · 1 answers · asked by Tom T 1

2007-08-27 16:05:16 · 9 answers · asked by colbertem4 1

The membrane of a living cell can be approximated by a parallel-plate capacitor with plates of area 4.75 x 10^-9 m^2, a plate separation of 8.5 x 10^-9 m, and a dielectric with a dielectric constant of 4.5. (a) What is the energy stored in such a cell membrane if the potential difference across it is 0.0725 V? (b) Would your answer to part (a) increase, decrease, or stay the same if the thickness of the cell membrane is increased? Explain.

Thanks so much!

2007-08-27 16:01:05 · 3 answers · asked by 123haha 1

The Earth has a mass of 5.98 1024 kg. The average mass of the atoms that make up the Earth is about 38 u. How many atoms are in the Earth?

Suppose that it takes 12 h to drain a container of 5700 m3 of water. What is the "mass flow rate," in kilograms per second, of water from the container?

A typical sugar cube has an edge length of 1 cm. If you had a cubical box that contained a mole of sugar cubes, what would its edge length be? (One mole = 6.02 1023 units.)

For about 10 years after the French revolution, the French government attempted to base measures of time on multiples of ten: One week consisted of 10 days, one day consisted of 10 hours, one hour consisted of 100 minutes, and one minute consisted of 100 seconds. What is the ratio of the French decimal week to the standard week? What is the ratio of the French decimal second to the standard second?


Please and thank you!

2007-08-27 15:55:46 · 2 answers · asked by twinklyxtoes 1

2007-08-27 15:49:55 · 1 answers · asked by Robby 2

With all thr differing particulets in our atmosphere could they somehow be ignited?

2007-08-27 15:47:26 · 6 answers · asked by Stephen T 1

2007-08-27 15:24:33 · 6 answers · asked by Brena J 1

what i know is that the coriolis force is observed by an observer in a rotating frame of reference. so where do i go from there?

2007-08-27 15:09:51 · 2 answers · asked by neal lasta 2

That story about how he saw that huge clock in england but really the clock clicked to twelve a couple seconds before he saw it meaning that the light had to travel from the clock and make a reflection which caught his eye. So he thought about velocity = distance over time and concluded that time stops in velocity for very little seconds...something like that, explain the story and the point!

2007-08-27 14:48:50 · 2 answers · asked by Strive to Survive 2

The length of the barrel of a primitive blowgun is 1.7 m. Upon leaving the barrel, a dart has a speed of 16 m/s. Assuming that the dart is uniformly accelerated, how long does it take for the dart to travel the length of the barrel?

2007-08-27 14:36:05 · 2 answers · asked by Anonymous

Please watch these videos before you comment:

http://video.google.com/videoplay?docid=-364734785678120841&hl=en

http://www.youtube.com/watch?v=Qa7PN-8T2VY

http://www.youtube.com/results?search_query=molten+metal+wtc&search=Search

Melting temperature for steel = 1532 C

Flame temperature for any hydrocarbon fuel air fire whose only
source of oxygen is still air = under 250 C

Burning temperature for paper = Fahrenheit 451F = 233 C

(you can check these facts with a pyrometer or high
temperature sensor or thermal imaging camera) Don't believe
a word that I say, test these things out for yourself !

2007-08-27 14:28:15 · 9 answers · asked by Anonymous

A body having zero velocity and non-zero acceleration
A body having constant acceleration and variable velocity
A body having velocity east and acceleration east
A body having velocity east and acceleration west
A body having constant velocity and variable acceleration

2007-08-27 13:56:22 · 4 answers · asked by Matthew C 1

A man swings on a 30-m rope initially inclined at an angle of 37 degress with the vertical. What is is speed at the bottom of the swing? a) if starts at rest? b) if he starts with a initial speed of 4 m/s ?

2007-08-27 13:49:17 · 3 answers · asked by pnev2121 1

I'm probably gonna do this ruetnely, (a good chance for me to vote you for best answers).

pls do give full work responses, so that I may learn.

1) Convert 1.90 km/h to m/s.

2) (a) How many square centimeters are there in 2 square feet? (1 in = 2.54 cm.)

(b) How many square centimeters are there in 2 square meters?

(c) Using your answers to parts (a) and (b), roughly how many square feet are in 2 square meters?

3) The smallest "living" thing is probably a type of infectious agent know as a viroid. Viroids are plant pathogens that consist of a circular loop of single-stranded RNA, containing about 300 bases. (Think of the bases as beads strung on a circular RNA string.) The distance from one base to the next (measured along the circumference of the circular loop) is about 0.40 nm.

(a) What is the diameter of a viroid in m?

(b) What is the diameter of a viroid in µm?

(c) What is the diameter of a viroid in in.?

Your teachings are greately appreciated:)

2007-08-27 13:41:39 · 3 answers · asked by Cadc 1

i think if you know how to do it...itsprobaly not hard..but my teacher did one problem that was nothing like this so i have no idea what to do! Heres the problem:
A car is driven 125 km W and then 65 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)? Draw a diagram...i think its using the vectors things...help please! I have hw on this stuff and i have no idea where to start

2007-08-27 13:18:37 · 3 answers · asked by Anonymous

Watch 9/11 Mysteries:

http://www.truth911.net

and Loose Change 2

http://www.seeloosechange.com

and this 10 minute video about strange explosions going off
at the Twin Towers before their collapse:

http://www.youtube.com/watch?v=Qa7PN-8T2VY

And this firefighter's testimony about what happened on 9/11:

http://www.prisonplanet.com/articles/august2007/080807_b_clinton.htm

Explain all the explosions happing in the basements and in
the lobby (ground floor) of the Twin Towers.

Explain all the molten metal, when it is a FACT that jet fuel
fire, (kerosene)
whose only source of oxygen is still air, does not burn hotter
than 250 C, and it is another 100% undeniable fact that steel
melts at 1532 C.

Explain all the molten liquid white/yellow hot steel DRIPPING
out of the South Tower, just before it's complete free-fall speed
collapse. (as if none of the lower materials below had any
strength at all)

MOLTEN METAL PRODUCED BY AIR FIRE! HOW?

2007-08-27 13:16:52 · 9 answers · asked by Anonymous

my older brother told me about this the other week, but i didn't quite understand so please someone if you could explain it to me, i know it must be extremely complicated.

2007-08-27 13:09:36 · 1 answers · asked by RiCARD0 1

A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.24 s for the tile to pass her window, whose height is 2.5 m. How far above the top of this window is the roof? Answer in meters

2007-08-27 12:03:41 · 4 answers · asked by GuardGal27 1

This is a hypothetical question. I would think that all of the atoms would desintegrate and turn into a finely powdered substance.. then I thought it would kind of explode since there would be heavy ionization with the nearby air resulting in release of energy and light... But initially the nucleii would be repulsed from each other. Anyway I was just curious of what would happen from a purely hypothetical perspective, and I was hoping I could get a scientific and accurate answer if it really did occur. I hope this doesn't happen to my iPod though.

2007-08-27 10:16:37 · 7 answers · asked by allen314159 2