Physics

I have a question for those of you that are versed in physics. I am kind of a hobbiest and really enjoy reading theories without the equations. As i read about Einstiens equation (e=mc2) I wondered where the mass that is lost due to resistance during the conversion into energy is represented. (according to realitivity if i kick a ball it looses mass when it is in motion) If this is located in this equation could u please reply to this with a bit of explanation for a lost person. I have an equation i tried to work out but i dont know if its correct. ------- --- 2 2 -----------------------------------------------------------------------------E = M-(M/R*C)C …

Hi: a) an atoms electron is in the ground state (-4.11*10^ -17). An electron with ke 5*10^-17 collides with the atom, what happens to the energy. b) What could subsequently happen to the electrons in the higher energy levels help plz Yes energy = - 4.11E-17 J my mistake lol I think the answer is that the atom gets ionised and the remaining enegry becomes the KE of the free electron. but im confused as to the words 'what happens to the ENERGY' (is it just absorbed by the electron in the ground state and the rest goes to KE) and part b) i think it is the electrons drop down energy levels emmiting light - photons with discrete frequencies henc…

Hey guys im new to this site....I thought this would be a perfect way to learn some unanswered questions. How exactly does window tinting work? Are you able to change the "%" of window tinting after the glass is already made or does it have to be a previously constructed to a certain "%" of tinting and never can change really.

I have a few questions regarding static charge. 1) When people get charged up (by rubbing a across a carpet etc), is it the person that usually gives up electrons or gets electrons or is their no bias and it can happen either way? (I know that it depends on the materials rubbing but I am just speaking typically based on what we know about how people usually get charged (socks, shoes, sweatshirts etc...). 2) How can you detect static (strength and +/-)? Is there a digital way to do this? (also can you do this without actually affecting the system... i.e. without discharging the object...)

I have to do an egg drop experiment for my physics class. It has to travel about 8 or 9 feet and can not break. The catch is that I can only use toothpicks and glue (super glue, elmers, rubber cement, etc). I have no idea how to make a device (it can't be too large in size) that will carry the egg and not break it on impact. The egg can not be glued inside either. We have to put the egg inside the device on the day of the experiment. Can anyone help me with ideas at all? I'm desperate!!

In case any of these are of interest. They are written to be very accessible, for general audience, like the SciAm. http://focus.aps.org/focus_archive?sub=Vol&v=v15 http://focus.aps.org/focus_archive?sub=Vol&v=v16 But this is only a partial list---it is what the editors of PHYSICAL REVIEW FOCUS chose to highlight in 2005---there could be other major stories that aren't represented here. it is chosen from publications of the American Institute of Physics (AIP), which puts out "Physical Review Letters" and other technical peer-review journals so these stories are chosen from a limited field----stuff that happened to be published by the AIP. Howe…

i no what X and Y axis is but what is T axis and are there more?

I am not scientifically credentialed but have an interest in space exploration. I often harangue politicians and NASA to do more and better in that regard. I wrote a brief editorial about why I believe space exploration budget allocations are less than optimal and am wondering if my article contains any gross inaccuracies (that would render my argument meaningless). I would welcome any input from those knowledgeable in physics as to whether or not my argument holds any water. The article can be found at: http://www.opinion.propertyopportunities.com/propulsion.html Thanks in advance for your thoughts. Mark

is it true that clocks sync to one another if put next to one another? for example i turn on a watch, soon after i turn on another one. the second hand of both watches move at different times. however, if i put them next to one another for lets say, a few minutes, they move in unison. why does this happen, or does this have to do something with your brain and you only imagine it.

I was reading this little paper i ran across, and wasn't sure if i was getting the jist of this right. The corresponding figure is here. Is this guy saying that muons can be created by rapid accelleration of electrons to sub-light speed? And if it's not to much trouble, could somebody give me an idea as to what you'd use to achieve that?

I am very sure this has been and will be discussed time and again but i hope you have enough patience to please answer this one more time. If the photon is masless, how can it possess momentum and energy ? The 2 things just seem to go together. When they say massless they do mean mass = 0 right ? And when AH COmpton derived the formulas to calculate momentum of a photon, he used the equation E=mc^2 right ? So therefore, the photon must have a mass, because E / C^2 = never 0 ... I am a really confused high school physics student, please help me out, dont let me rot in the darkness. thank you

I am not a science student but I am just curious about how our world are form? so if you think I am stupid I don't blame you. Because it is true i don't have lot of knowledge about science. if any body can help me I will be very thankful. here are the question listed as follow: What is rock construct from? what is wind construct from? what is fire construct from? what is water construct from? what is woods construct from? don't matter what kind of wood

sorry, to bother your guys. I have a question about science for you guy. I want to know if any body can help me find the answer to it. first question what is the smallest Molecular cell in earth. that is a strat.

How frictionless is that thing? If I were to push a magnet covered in magnaview fluid in a plastic tube, would the friction between the fluid and the tube be greater or smaller than the friction between the magnet and the air if I were to push a levitated magnet? Is it possible to create a sort of "magnaview train" and push it using magnets like in a linear particle accelerator? Would it be efficient? I want to do a small experiment on this .

Sorry posting here also b/c i wanst sure which thread this belongs in... Hi, Is there any substance/material that i can place infront of an ordinary magnet that will block the magnetic waves? say i have a strong magnet next to a piece of metal, is there anything i can stick between them so the metal will not be attracted to the magnet? thnx for any help.

This new Physics area can be treated as a "General Physics" section, where you can post new topics which can't be categorized into a specific sub-forum. Enjoy

hi everyone, i know there are a few ways to increase the amount of OHMs in an electrical Circuit but can anyone suggest the best way(s) I.e. simplicity & more OHMs many thanks it's just for a little experiment im conducting