Classical Physics

I'm really stuck, I've been doing questions all day so I think my poor brain is just a bit frazzled. Any help will be much appreciated!<br style="color: rgb(51, 51, 51); font-family: arial, helvetica, clean, sans-serif; font-size: 13px; line-height: 16px; "><br style="color: rgb(51, 51, 51); font-family: arial, helvetica, clean, sans-serif; font-size: 13px; line-height: 16px; ">Thanks for all your time https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/417804_235689599847986_100002208446841_502821_1921907877_n.jpg

To find out if two objects fall at the same rate, you have to find their final velocity. To do this I used the equation V22=(V12)+2(a)(d). If I recorded that object 1 fell at 5 m/s and had an initial velocity of 0 and fell a distance of 30 meters then: V22=(0)+2(5m/s)(30m) V22=300m/s Now say Object 2 is double the weight and has double the acceleration than Object 1 then, V22=(0)+2(10m/s)(30m) V22=600m/s This clearly shows that if an object with 2x the weight falls 2x faster. This shows that all objects fall at the same RATE (not accelerate) according to their weight (not density).

I think I made myself a bit unpopular on the speculations forum, by criticising physicists' religious beliefs, and making fun of their imaginary beings (dark matter, quarks, gluons, and Higgs). So to show that I am truly penitent, I have been trying to act like a proper physicist, by doing some pointless calculations about the size of the earth's equatorial bulge. The article is too long to post here, but can be seen at http://squishtheory....uatorial-bulge/. The highlights are, that by assuming the mass of the earth to be uniformly distributed, I actually got the same value as Newton calculated in the Principia, though by a very different method. To get the measu…

how to do measure the temprature of a fire?

I am interested in making a Ferrofluid Magnetoscope. I know where to buy the Ferrofluid from but I don't know where to buy or make the platform that is used to hold the magnet that allows you to move the magnet up and down. I am making this for my son who is 8 yrs old. It does not need to be large or fancy but functional. ALso does anybody know if Ferrofluid comes in any other colors other then black and where I can buy it from? Thanks.

Please enlighten my ignorant self ; Is Earth's Magnetic Field fluctuating, ( as has been normal ), or gradually weakening overall Plus why, ( if weakening ), ta much

First of all is it possible to use a Jpeg image in a spectrometer to determine what the substance is? I have used pictures before with a UV light and had color transvalence of certain enzymes of suspected targets. Can I ask it of anyone to use your lab spectrometer for a documentation of a suspected substance fraud?

Which of the following colors would appear as a bright band in an emission spectrum of a yellow sodium vapor lamp? B. Yellow, indicating a greater wavelength than ultraviolet light A. Yellow, indicating a lesser wavelength than ultraviolet light C. Blue, indicating a lesser wavelength than ultraviolet light D. Blue, indicating a greater wavelength than ultraviolet light The answer is (B). I just feel like it was a bad question because I did not know whether the band would appear yellow or blue. Just because Na appears yellow does that mean that yellow is the color that it emits and so on a spectrum it will appear yellow as well? I understand that …

hello, I'd like to know how does the solar radiation received on a flat surface vary if we change the angle of it. To simplify, if I've got a board of 1*1meters (at 0º -parallel to the ground-) and it is receiving 1Kw/h, the sun being at 90º, how will it received if I turn it 10º? Thank you Jaime

An aircraft has a wing area 50cm square. If the velocity of the air over the upper surface of the wings is 150m/s and that over the lower surface, 140m/s during a horizontal flight. What is the net lift force on the wing? (density of air = 1.29kg/m cube)

Im recently involved into a physics problem of air break-down. Radio frequency will be generated by air break-down according to previous research, which I want to look into and do some theoretical analysis. It will be highly appreciated if anyone can give some suggestions or recommendations of books?

"an object in motion, stays in motion while an object at rest stays at rest" That is what sir issac newton stated.... lets take an example for the sort, if you had a big rock and it wasnt moving, it would be using inertia.. The same thing happens when a rock is moving, it wants to keep on moving...(in space that is): here is a video to help you http://www.youtube.com/watch?v=by-7kkAu2Pg If you still dont understand, just reply ur question to this post!

historically the population of the world and those who believed in Santa was much smaller making magic reindeer power possible but since the population has grown I think it's impossible for Santa to make his trip using just reindeer. So........what do you think the sleigh is powered by to make his trip feasible?

Isn't that a bit oddly written? Seems like a popularization. Newton's First Law (also known as the Law of Inertia) states that an object at rest tends to stay at rest and that an object in uniform motion tends to stay in uniform motion unless acted upon by a net external force. If it is just a popularization, I'm unsure why it had to say "tend" when it's more accurate to say "object at rest stays at rest and that an object in uniform motion stays in uniform motion unless acted upon by..." Otherwise, it implies that an object doesn't always stay at rest or in motion even if it weren't acted upon by an external force. Plus it says nothing about an int…

Now I remember distinctly that one of my science teachers described to me a circuit that one could use to measure the potential difference of a galvanic cell; it's E0 value, ie. it's electric potential where there is no current. It involved a transformer, a micro-ammeter, the galvanic cell and a rheostat. I want to know how it works and possibly get more info on the subject. Cheers.

I do a lot work with metal by hand, and recently I've been doing more delicate work with rings and the copper dust on my hands from sanding seems to create more scratches that I have to sand off whenever I hold it. Is there some household or common item I can use to attract copper dust from my work area and hands? I might have magnets somewhereeven if I can't find them right now, would that work?

Does the transfer of energy take place when we push a huge rock with all our might and fail to move it?where the energy we spend is going?

How to get the magnetic field in the centre of a squared wired of length L ?

We can say that sound energy is just a kinetic energy because sound waves cause the air particles to vibrate which is sensed by our eardrums and thus via sensory nerves they are interpreted by our mind.we also know that energy is neither created nor destroyed.SO WHERE DOES THIS SOUND ENERGY GO?I also read somewhere that this energy is converted into heat energy.but i want to know it is converted into heat energy of what?i guess that they are converted into heat energy of air particles because the particles of air collide each other when sound wave passes through them.correct me if i am wrong.

Ok. Me and my friend have a pneumatic potato cannon and want a fair prediction of what the distance will be once we increase the pressure. Here are the results from previous firing: 29psi - 313ft.(199.9479614kPa - 95.4024 meters) 60psi - 467ft.(413.6854374kPa - 142.3416 meters) 80psi - 582ft.(551.5805832kPa - 177.3936 meters) 90psi - 630ft.(620.5281561kPa - 192.024 meters) Assuming that all tests were fired at a 43 degree angle and the air temperature was 70 fahrenheit(21.1 celsius) and that all potatos fired were 2.74oz(77.678grams) and 1.5in(38.1mm) in diameter. The barrel is 1.5in(38.1mm) in diameter and 10.2916ft(3.13687968meters) in length. The potatoes fit tigh…

Hi all, I'm a relative noob to physics, but yesterday a question came to mind: If degenerate matter has maximum density, what would happen if you were to, say, whack it with a baseball bat? If F=ma and you apply a force to the degenerate matter, then it must produce some acceleration by the degenerate matter. My understanding would tell me that the entire mass would not accelerate uniformly, but it would deform to a degree; the matter closest to the impact would accelerate first, and after some period of time, however small, the rest of the mass would accelerate. Obviously if this were the case, the problem would be that the degenerate matter is already at …

Revered Members, When light travels from rarer to denser medium and vice versa, velocity and wavelength changes but frequency remains constant. What is the reason? This question was asked in the physics quiz competition held in my school. I replied that since energy of the light remains the same and since energy is proportional to frequency, frequency remains constant. But the convener said the answer is wrong. Am i wrong?

For this topic you must watch this video first... http://www.youtube.c...hU&feature=fvsr He says... "And those things(atoms) are charged so they "OUGHT" to interact with the electromagnetic field. So that means they ought to be able to give some energy to electromagnetic waves. So doesn't that mean that light gets to play? " What does he mean by they "ought" to interact ...that is a vague term...does that mean that physicists are just "guessing" that this interaction is occurring or have there been scientific tests done?. And what does he mean by light gets to play?... apparently that video link did post..http: //www.youtube. com/ watch?v=jbxt…

Revered Members I have attached images of applications of Gauss' law namely 1) Electric field due to an infinitely long charged wire and 2) Electric field due to an infinite charged plane sheet. In both cases Gaussian surface is cylinder. In the first case, the electric flux is found for curved surface and it has been done for only side that is right side of cylinder in this case. In the second case, the electric flux is found for plane caps but it has been done for both the left plane cap and right plane cap. My doubt is , why we are doing for only one side for the curved surface and for both sides in the case of plane caps?

Hello everybody, The satellites revolve in orbit. Are they in orbit due to; The equilibrium between the centripetal force provided by the Gravity & the Tangential velocity of the satellite? OR Due to the 'catch me if you can' game played between the Curvature of the earth's surface & the Escape velocity of the satellite. Thank you