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The Big Rip is an extreme scenario that supersedes that of a Big Freeze. Both of them are possible consequences of an ever expanding universe. While the Big Freeze can take place if the forces that are believed to govern the current rate of expansion are constant, the Big Rip will happen if the...

Bjorken X is a scaling variable used in deep inelastic scattering..for more info on this experiment see this: http://ikpe1101.ikp.kfa-juelich.de/briefbook_part_detectors/node42.html#41 [Broken] It gives the momentum fraction carried by an inclusively observed particle. Structure...

thank you very much for the replies..i actually encountered this while readig a book , quite old , and thats why i probably heard abt this,,,,,,,,

can somebody simply explain what is meant by NEGATIVE QUANTUM STATES , as given by dirac in his theory???i know its not as SIMPLE as i want it to be , but still I would like to know its significance in the most basic way!!

i think you will realize it very soon that you will sometimes feel helpless without the sound knowledge of maths in physics.....

you need to specify the molecule first!!!

magnetic monopoles?? why dont magnetic monopoles exist??

hmmm ok thanks for ur answers!!

Why are pseudo forces also sometimes called INERTIAL FORCES , even though their need arises because of non inertial frames??:confused:

:eek:

all the three are equivalent indeed!!

@symbolipoint what is the mass of the natural gas that you are getting?? by your method , i am not getting the right answer!!

completely no relation between the two...:uhh:

it can also alter the volume...

i dont know why i am getting stuck in such a question??? can u explain it in a little easier way??:redface:

:tongue:

your question is itself being answered by yourself..........:tongue:

so you mean i should find number of moles by taking the help of given % by volume...

hmmm still confused with what the quesn is asking exactly??:confused:

hmmm if 1 mole CH4 contains 1 mole C how can we find moles of C in 10 % CH4...??

:approve: actually our sir asked this question and we explained all the things we could ( talking about carbocation rearrangement as well) but he didnt look to be approved of what we had to say!!:rolleyes:

O is sp2 hybridised according to VB theory who told you this??:rolleyes:

so how to start??:confused:

well i calculated the % by volume of C in each compound............ converted into % by wt then by dividing it by total wt found the %age....

just use the range formula , i.e R = u2 sin 2\theta / g and max ht = u2 sin 2 \theta / 2g

:tongue:

that distance 28 cm is actually b/w the pt. of suspension of the 2 threads...

i mean whats the meaning of by time interval b/w their periodic approaches to each other over the min. distance?? uptill now i m doin this : T = 2\pi1/2( r3 / GM) so dT = 2 pi / root of GM * 3/2 r1/2 dr so i hav found dT / T and hence dT....... what to do next??

Homework Statement A neutral gas sample contains 84% ( by volume ) of CH4 , 10 % of C2H6 , 3 % of C3H8 and 3% of N2 . If a series of catalytic reacns cud be used for converting all the C atoms of the gas into butadiene , C4H6 , with 100% efficiency , how much butadiene cud be prepared frm 100...

Homework Statement Two satellites of the Earth move in a common plane along circular orbits , the radii being r and r-\Deltar ( \Deltar << r ). What is the time interval b/w their periodic approaches to each other over the min. distance . Take M to be the mass of the earth M = 6 * 10 24 kg ...