Thank you for all your videos sir. Because of you I managed to top Physics in my country. Thank you so much. All the revision series and exercises were awesome.
The two are not inconsistent. The formula R= ro A^1/3 gives the radius of the nucleus with atomic number A. Where A=1, i.e. hydrogen, the nucleus is just a proton.
Would you please be able to do a video on how you directly calculate the nuclear radius from alpha scattering and electron diffraction ? It would be really appreciated . Dan
hi! Your revision videos are a great help! I was just wondering do you have any videos on Nuclear Decay, on things like half life of a nuclide? Darren =]
400 teratons of matter in one cubic metre of space. Just for fun I want to see how much energy is released if that were to explode on contact with antimatter! Its about 7x10^19 which is 70 exajoules. That's about six times the output of a warp core on the starship enterprise-d. Lovely.
Thanks for your reply... but I'm still missing something. The cubic root of A=1 is still 1 which makes the calculated radius of a proton 1.4 fm NOT 0.84 fm? Shouldn't ro = 0.84 fm?
What holds neutrons together then because if it was the strong nuclear force wouldn't they get squashed because they have no net charge meaning there is nothing to balance against the attractive force of the strong nuclear force?
The strong nuclear force holds both protons and neutrons in the nucleus. The shape of the force is such that at very small distances it becomes a repulsive force so that the nucleons do not crush one another.
Protons and neutrons are made out of quarks. The strong nuclear force affects quarks and is a low range force meaning it is powerful only at small distances. This force acts on protons and neutrons as well as they are quarks as well
Probably. Different syllabuses give different values. I usually use the rule of thumb of 10^-10 for the diameter of an atom. 10^-14 for the diameter of a nucleus and 10^-15 for the diameter of a proton.
Because pretty much the whole mass of the atom is in the nucleus. And the nucleus has a diameter about 1/10,000 that of the atom. So nuclear matter is very dense.
Thank you for all your videos sir. Because of you I managed to top Physics in my country. Thank you so much. All the revision series and exercises were awesome.
+Susav Shrestha Excellent. Well done!
😊😄
describe the mechanical effort of a torque,
Kun year ko ho bro?
Your year is 2018 my bro.
Sir it's been 9 years since this video was uploaded but it is still very helpful to my A Level Physics revision
An introduction to the Nuclear Shell Model has now been uploaded. Hope it helps.
thank u so much sir. You are so much better than my physics teacher.. its very easy to follow and understand your lectures. Thanks again.
The two are not inconsistent. The formula R= ro A^1/3 gives the radius of the nucleus with atomic number A. Where A=1, i.e. hydrogen, the nucleus is just a proton.
Nice video, but could you go a bit higher than 240p? I can't see, well, anything.
Would you please be able to do a video on how you directly calculate the nuclear radius from alpha scattering and electron diffraction ? It would be really appreciated .
Dan
hi!
Your revision videos are a great help!
I was just wondering do you have any videos on Nuclear Decay, on things like half life of a nuclide?
Darren =]
I like your style of teaching.
Thank you sir! Very helpful
400 teratons of matter in one cubic metre of space. Just for fun I want to see how much energy is released if that were to explode on contact with antimatter! Its about 7x10^19 which is 70 exajoules. That's about six times the output of a warp core on the starship enterprise-d. Lovely.
***** I Erm. did you forget to use c^2? cos you're about 6 orders of magnitude short..
Evan. Yes indeed I think I did, I actually just got a value of 3.59*10^34
thanks alot im stuck with my gce papers and your videos are very succinct yet informative.
Thanks for your reply... but I'm still missing something. The cubic root of A=1 is still 1 which makes the calculated radius of a proton 1.4 fm NOT 0.84 fm? Shouldn't ro = 0.84 fm?
nevermind, found it when watching the nuclear fission videos ^^
Once again thanks!
This is great, thank you!
i want a video about a "single particle shell model"
Lost it at 3:54 and not much before.
A nucleus is 10e-14 m across, while an atom is 10e-18? I think you have it the other way around.
+Jacob Baird shouldn't it be 10e -15?
+FXH13 its between 10e-15 and 10e-14
Isn't it wrong to say "reflected" instead of "deflected"
thank you very much
thank you!
why is this video only 240p
What holds neutrons together then because if it was the strong nuclear force wouldn't they get squashed because they have no net charge meaning there is nothing to balance against the attractive force of the strong nuclear force?
The strong nuclear force holds both protons and neutrons in the nucleus. The shape of the force is such that at very small distances it becomes a repulsive force so that the nucleons do not crush one another.
DrPhysicsA I see. Thank you. I love your videos anyway, you present normally complex physics in a nice simple way. Keep it up.
Protons and neutrons are made out of quarks. The strong nuclear force affects quarks and is a low range force meaning it is powerful only at small distances. This force acts on protons and neutrons as well as they are quarks as well
Isn't the diameter of nucleus 10^-15 according to CIE syllabus?
Probably. Different syllabuses give different values. I usually use the rule of thumb of 10^-10 for the diameter of an atom. 10^-14 for the diameter of a nucleus and 10^-15 for the diameter of a proton.
I am watching it now is there any changes in syllabus ?
check your exam boards specification
Why is the density of the Nucleus soooo large despite it's size?
Because pretty much the whole mass of the atom is in the nucleus. And the nucleus has a diameter about 1/10,000 that of the atom. So nuclear matter is very dense.
DrPhysicsA Like a neutron star?
very gud
is it also giving free virus's ?
You squared the radius when you are meant to cube it!
***** At what time on the video does this occur?
Oops. Sorry! It looked like 2 cos I had it on low resolution. My bad.
Who told physics is difficult....? not with DrPhysicsA !
Why is ro = 1.4 fm ? Isn't the radius of a proton 0.84 fm...
Anyone else hear the birds in the background?