Classical Physics

Is there anyone out there with experience in this field? Thx Ar-Ex

If a photon is massless how can the intense gravity of a black hole have any affect it? Ta

forgive this sounding odd, but is Plutonium ever stored in lead boxes roughly 9 x 6 inches? if so what would a "safe" quantity be stored in such a box? and would the lead become contaminated eventualy (after 10+ years) without the plutonium being present any longer, would the lead become radioactive? I have a VERY GOOD reason to be asking this, so NO BULLSHIT PLEEEEEZE!

I need someone to check my work and see if it did it right or not. I skip some of them because I do not know them, and I hope you guys can help me. This is my final study guide for my final test in physical science. Please help me out! Calulating Density Density = Mass/Volume 1. What is the density of carbon dioxide gas if 0.196g occupies a volume of 100 mL? ANSWER: 0.00196 g/mL 2. A block of wood 3.0 cm on each side has a mass of 27 g. What is the density of this block ANSWER: 1 g/cm^3 3. An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 mL. The height of the water rose 7.0 mL. If…

In how many different ways can we show that the following force field is conservative?? F= [math](2xy+z^3[/math]) i + [math]x^2 [/math]j + [math]3xz^2[/math] k

Simultaneously.. .Do these two types of waves interfere? . Can they both have a destructive effect(break a glass)?

Is it possible to create a sort of Burst communication style? what i am thinking is a communicating style that is based off of binary and Amplitude modulated or maybe Frequency modulated waveforms. Maybe something like this for FM: 0 = 5-15 1 = 20-30 0 = 35-45 1 = 50-60 it may be possible to calculate the wave for proper transmission over vast distances, and due to its "burst" technique it would be technically faster, because it is sending the entire message all at once? The broadcast method would be 4 or 8 antennas broadcasting simultaneously parts of the wave, IE antenna 1,3 broadcast both 0 value waves, and 2,4 broadcast both 1 value waves.

what is A.B.C? where A,B,C are vectors.

Sadly, no one managed to realize what are the units of this equation and point if there are any mistakes in this dimensional analysis: [math]F_{12} = \frac {\mu_0}{4 \pi} \int \int \frac {I_1*dl_1 \times (I_2*dl_2 \times \hat{r}_{21} )}{|r|^2} = \frac {\mu_0*I_1* \int dl_1 \times (I_2* \int dl_2 \times \hat{r}_{21} )}{4 \pi*|r|^2}[/math] [math]=> \frac {\mu_0*Q_1*v_1 \times (Q_2*v_2 \times \hat{r}_{21} )}{4 \pi*|r|^2}[/math] [math]=> \frac {4 \pi*10^-7_{N/A^-2}*1_C*1_{m/s} \times (1_C*1_{m/s} \times 1)}{4 \pi*1_{m^2}}[/math] [math]=> \frac {4 \pi*10^-7_{N/A^-2}*1_A*1_m \times (1_A*1_m)}{4 \pi*1_{m^2}} \ =OR= \ 10^-7_{N/A^-2}*1_{C/s} \t…

I was in my room, with my lamp on and a book in my hand. The book was blue. I set down my book, nearer to my lamps light, and saw how the blue of the books front page became somewhat brighter. I then turned off my lamp and was now in a pitch black room. I could not see any color whatsoever from the book anymore. I noticed this and went into the living room, where we have a dimmer-switch lamp. The room was pitch black, like my room. There was no color from the book. I slowly brightened the lamp, and as I did so, so did the colors of the book. At very dim light, the book was a dim, dark blue, and as I brightened the light, the blue would become brighter, and more majestic. …

3 bodies of equal mass specific heat capacities are at temperature 100k, and two at 300k. they are acted by a heat engine. what is the maximum temperature that one of the bodies can attain?(not mentioned which one?) ans. 400k.

It has infinite reach, but tapers off. So Earth's gravity can't affect a planet in another galaxy, for instance, because of competing and stronger gravitational pulls interfering along the way. However, let's say Earth and that planet were the only mass in existence, but separated by a hundred million light years. Also, no cosmic expansion. Would the gravity of both Earth and the other planet eventually cause them to slowly draw nearer, i.e. would the gravitational tug be significant enough across the vast distance (without competing gravity from the other absent masses)? Or is there a limit, where gravity has zero effect after a certain distance that's rel…

In most physics books ( even the University ones) i looked at, they use geometry to derive that the acceleration is [math]\frac{v^2}{r}[/math],where v is the constant speed and r is the radius (magnittute of the position vector r) of the motion. Can we not use pure vector analysis to derive the above fact??

Why is the radian used as the measurement of angular quantity in physics rather than the [more common] degree? Thanks

Hello, I'm a computer programmer and although I do have education in classical physics including electrical courses and as well as practical experience with assembly and testing of UV radiation equipment, their power supplies and overall wiring, I'm surprised to realize I have no idea what is the purpose, derivation (experimental origin) and the meaning of Maxwell's equations as I can not recall to have used any of them for anything. This realization happened when I was supposed to simulate - model and visualize in 3D - the simplest electromagnetic interaction there is, between electric and magnetic fields from only two electrons/positrons, including the tracing o…

Please indulge my naivete here. Is Einstein's famous equation a precise statement of the relation of energy and matter?, or is it just a way of saying there is a whole lot of energy locked up in matter? I just don't understand why the speed of light is used as the multiplier here. And what is the unit of energy that is the result of this multiplication? ergs, joules, volts.....?

A few Questions: 1. When and how often will those particles collide? 2. If they do collide when do they find the higg's boson 3. If they collide wouldn't that make a mini bib bang and that will find it?

I'd like to ask about the effect of sudden heating just after super cooling on whatever material(metal, aluminuim, gold,...etc.) or vice versa(sudden cooling just after great heating), I think it differs who is first, super cooling or great heating. why does Pyrex break of such effect knowing that Pyrex manufactured to withstand heat. regardless Pyrex glass, I am thinking about the chemical or physical phenomena after such consecutive change in temperature on any object/material. any help much appreciated, thanks in advance.

Hi all, Does a magnetic field cause any changes in the electric polarity of a polar molecule like water, Depending on the local generated electric field due to thermal motion of molecules ? It may not be observed in bulk state due to the randomness of thermal motion and so the variation of velocity will cancel out the effect, but I assume that the molecular interaction energy within the same fluid or with other molecules would change, locally at least.

Hi guys It was a long time since I logged in last time but I am writing an essay about steel and I would like to know the physical charasteristics of steel. Like density, melting point, and percentage of carbon (I'm asking you because I get so many different numbers and I'm a bit confused:confused: ) At the same time if you feel like answering what is so special about an electric arc furnace? Thanks for your help rigadin

can a positively charged ion be pulled away from a negatively charged atom. say like in salt water where the negative ends of the salt join with the positive ends and vice versa. so how could they be pulled apart

Is anyone working in Infrared and /or Ultraviolet photography? I have a few ideas for discussion. Thx ar-ex

I hope this is in the right forum if not please forgive me for my ignorance. Is there a fuel that when used will create more energy than is required to create that fuel? As an example It takes 50 KWH to create one KG of this fuel. When you burn this fuel to heat a steam turbine generator the generator then creates more energy than it took to make the fuel? So then you could take this fuel to operate the steam generator which would it turn operate the machine to make more of this fuel plus excess? So the fuel cannot be wood or coal etc it is a man made fuel like gasoline or hydrogen etc. Is this possible or does it violate the law of energy conservation or…

hi guys. ive done some research about electric guitars and wrote up how they work and stuff. but im not sure whether im 100% correct on some of this. could you guys maybe give me some pointers on what to add or whats wrong? its just over 500 words so im sorry about that, but i really need the help thanks. http://www.scribd.com/doc/27165119/How-an-Electric-Guitar-Works-1

What advantages would there be to having a laser that can output the color white? I seen some videos on youtube that have 3 different lasers lined up with mirrors that combine the colors RGB to output white. I do have an idea on how to make a single unit laser that can output the color white. I tried to search on the net if these white laser units already exist. If they do then I haven't come across it yet. Though I'm sure I'm not the only person to come up with the solution I am thinking about.