Physics - January 2007

its uses& properties

2007-01-15 17:42:33 · 7 answers · asked by vk 1

Yea . it is understood to a certian point, then when one keeps splitting smaller and smaller it does get absrd and murky down there, and didnt the Ancient Greeks and later Leibniz warn against this type of reductions because they lead to wrong notions and absurd conclusions?

2007-01-15 17:40:39 · 2 answers · asked by Anonymous

2007-01-15 17:10:23 · 4 answers · asked by Ganesh 1

A baseball (mass=0.14 kg) traveling 30 m/s moves a fielder's glove backward 30 cm when the ball is caught. What was the average force exerted by the ball on the glove?

something to do with (1/2)(m)(v²), me thinks...and it's supposed to be one of the easier questions, but I'm lost..

if someone could give me a lead or hint, that'd be great.

2007-01-15 17:06:36 · 3 answers · asked by Space Cadet 3

I read the book PREY By Michael Chriton and it spoke about small naomachines that took on a form of their own. being able to think on their own.

Well...thats one time ive heard nanomachines mentioned. however....

mainly...i heard of nanomachines in a video game. metal gear solid. where the main characters, working for secret government services. anyways....calls would be taking in frequencies using these nanomachines. is this possible? if so, how?

in the game the characters had these nanomachines in their ears, i pressume. small enough no one could notice yet able enough to be able to receive and make frequency calls.

2007-01-15 16:30:27 · 4 answers · asked by Legionnaire 1

I like this question. Nobody knows the answer but me.

2007-01-15 16:18:59 · 29 answers · asked by wwwwwwwfe 1

2007-01-15 16:08:40 · 5 answers · asked by Anonymous

2007-01-15 15:33:24 · 6 answers · asked by shykosciencegirl 1

i had a thought if E=MC2 then Energy = Mass x Speedof light squared.

therefore if M(mass) = 0 then E = 0 x C2 which means E=0

therefore if some thing has energy than mass (M) must be greater than 0

therefore if light has energy it must have mass

so if light has mass and can move at the speed of light anything with mass can move at the speed of light.


i realise i may be mixing my science and mathematics to reach this solution but i would greatly appreciate if someone could explain where i have gone wrong

2007-01-15 15:26:24 · 10 answers · asked by homer s 2

your wasting grant $$$$$$$...how long you going to milk it !! you know it isn't working !! almost 2 decades so far ! were gettin pissed !!!!!!

2007-01-15 15:20:17 · 4 answers · asked by Anonymous

2007-01-15 15:11:45 · 6 answers · asked by gururaj g 1

I personally don't think it is possible, but I'm really curious as to what all the of the cool people like you think.

2007-01-15 15:06:31 · 14 answers · asked by The FudgeMaster 2

how does the flow rate of charge in a parallel circuit divide if all parallel branches have the same resistance? if different branches have different resistance? Also is a battery a device which supplies a constant current to a circuit? explain.

2007-01-15 15:00:55 · 4 answers · asked by John L 1

My friend and I are debating

2007-01-15 15:00:38 · 4 answers · asked by will p 1

2007-01-15 14:54:14 · 9 answers · asked by Anonymous

determine the possible frequencies of vibration by assuming a solution fo the form x1=a1coswt x2=a2coswt

2007-01-15 14:46:28 · 2 answers · asked by stumped on physics 2

I already know the answer is approx 1m. What I really need is guidance on how to get there. I know that a second of arc is 1/3600 of a degree. I worked the equation using that (1/180 based on 2 seconds of arc) and the tangent function, but that was incorrect.

Any help and direction is appreciated.

2007-01-15 14:44:53 · 2 answers · asked by Linda T 1

Hi,

A plastic rod with linear charge density lambda is bent into a quarter circle. The quarter circle is placed in the 3rd quadrant in a way that if 3 more quarter circles were placed on the plane, the would form a whole circle (one quarter circle in each quadrant). The plastic rod has a positive charge all over. Find the electric field at the origin.

This might be hard to picture so I tried my best in paint to represent what is going on: http://i137.photobucket.com/albums/q208/infinitbelt/Figure2649.jpg


QUESTIONS:

a. Write expressions for x and y components of the electric field at the origin due to a small piece of charge at angle theta.

b. Write, but do not evaluate, definite integrals for the x and y components of the net electric field at the origin.

c. Evaluate the integrals and write Enet in component form.


Any help would be greatly appreciated!

Thanks!

2007-01-15 14:42:30 · 2 answers · asked by Anonymous

2007-01-15 14:41:14 · 10 answers · asked by ツ 1

2007-01-15 14:34:42 · 3 answers · asked by Anonymous

a particular guitar string is supposed to vibrate at 200hz but it is measured to actually at 205hz. by what percentage should the tenison in the string be changed to get the frquency to the correct value

2007-01-15 14:22:33 · 5 answers · asked by stumped on physics 2

Is there a way I could plug my guitar into whatever it's called and have the waves move to my playing ability?

2007-01-15 14:16:11 · 2 answers · asked by Matty G 3

1. if an object travels for 15 min with a constant velocity of 12 miles per hour west ,what is the acceleration?

2.A sportcar goes from a velocity of 12 meters per second east in 2 seconds. what is the cars acceleration?

3. A train takes a long time to stop. thats what makes trains so dangerous to people who cross the tracks when one is near. if a train is traveling at 30 miles per hour south and takes 12 minutes to come to a stop what is the trains acceleration?

I have most of the equation written out I just want to make sure I am getting it all down.

2007-01-15 14:15:53 · 3 answers · asked by YaYa 3

2007-01-15 14:05:52 · 4 answers · asked by Oriel B 1

2007-01-15 13:16:52 · 2 answers · asked by conrado l 1

Light incident upon a pane of glass slows down in passing through the glass does it emerge at a slower speed or at its initial speed?
initial speed
slower speed

What evidence can you cite to support the idea that light can travel through a vacuum?

What determines whether or not a material is transparent or opaque?

Which theory of light is the photon more consistent with -- the wave theory or the particle theory?

Short wavelengths of visible light interact more frequently with the atoms in glass than do longer wavelengths. Which do you suppose take the longer time to get through glass -- red light or blue light?

What is the difference between light that is polarized and light that is not?

What percentage of light would be transmitted by two ideal polarizing filters, one atop the other, with their axes aligned?
%
With their axes crossed at right angles?
%

What is the source of electromagnetic waves?

2007-01-15 12:54:55 · 2 answers · asked by Anonymous

If you know the posistions of a particle at two points along its path and also know the time it took to get from one point to the other, can you determine the particles instataneous velocity? its average velocity? Explain.

2007-01-15 12:37:21 · 3 answers · asked by Sarah M 2

the independent variable is the A CONSTANT B}HYPOTHESIS C DEPENDENT VARIABLE D CONTROL OR E STATED PROBLEM abcdand e are multiple choices chose one

2007-01-15 12:37:00 · 1 answers · asked by rida a 1

2007-01-15 12:35:26 · 4 answers · asked by . 1

While rising vertically at 10 m/s, a helicopter passenger falls out attached to a rope. How much rope has been pulled after 2 seconds?

2007-01-15 12:28:46 · 7 answers · asked by toucan248 1