- #1
ryan9907
- 5
- 0
hello there! your help is really appreciated.
1.For the Ruther alpha-particle scattering experiment, how come we are only concerned with the nucleus of the gold with repulsion on the alpha particle? what about the electrons in gold? Don't they attract the alpha particle?
2. To calculate the Electric potential energy between the alpha particle and the gold nucleus we use the formula Qq/4pi(Eo)R, whereby from my answer scheme Qq= 2(1.6x10^-19) x 79(1.6 x 10^-19).
Is this only concerning the repulsion between the protons? How come the electrons of the Gold is not considered?
Is it different if the question is phrased this way : calculate the e.p.e between the alpha particle and the gold nucleus. how do you determine Qq since Gold has both electrons and protons? which one do i consider?
3. So for EPE, do it apply to any atoms? like between a hydrogen atom and a carbon atom, is there EPE between them? because I'm confused with like the Qq part of the formula,its like hydrogen has electrons outside the nucleus and the nucleus inside has protons, so i don't know if it's attractive of repulsion when you place it beside another atom.
4. For nuclear decay, like alpha decay, the nucleus decay and emit a alpha particle nuclues with 2 protons and 2 neutrons, so what happened to the electrons?
5. how do you calculate the the mass of a uranium 238 atom. My answer says 938u. how come u is used and what does u means? don't protons and neutrons have different mass?
Thanks for helping :)
1.For the Ruther alpha-particle scattering experiment, how come we are only concerned with the nucleus of the gold with repulsion on the alpha particle? what about the electrons in gold? Don't they attract the alpha particle?
2. To calculate the Electric potential energy between the alpha particle and the gold nucleus we use the formula Qq/4pi(Eo)R, whereby from my answer scheme Qq= 2(1.6x10^-19) x 79(1.6 x 10^-19).
Is this only concerning the repulsion between the protons? How come the electrons of the Gold is not considered?
Is it different if the question is phrased this way : calculate the e.p.e between the alpha particle and the gold nucleus. how do you determine Qq since Gold has both electrons and protons? which one do i consider?
3. So for EPE, do it apply to any atoms? like between a hydrogen atom and a carbon atom, is there EPE between them? because I'm confused with like the Qq part of the formula,its like hydrogen has electrons outside the nucleus and the nucleus inside has protons, so i don't know if it's attractive of repulsion when you place it beside another atom.
4. For nuclear decay, like alpha decay, the nucleus decay and emit a alpha particle nuclues with 2 protons and 2 neutrons, so what happened to the electrons?
5. how do you calculate the the mass of a uranium 238 atom. My answer says 938u. how come u is used and what does u means? don't protons and neutrons have different mass?
Thanks for helping :)