Post by: fredbasset on November 11, 2008, 10:52:36 am
thanks
Post by: BiG DaN on November 11, 2008, 11:07:15 am
thats the only question i got wrong lol
u only take the time its entering or leaving field
Post by: fredbasset on November 11, 2008, 11:11:52 am
is it because its length in 2cm?
Post by: BiG DaN on November 11, 2008, 11:15:07 am
take it as leaving field
the length reqiured to totally leave field is 2cm
Post by: fredbasset on November 11, 2008, 11:16:02 am
Post by: ReVeL on November 11, 2008, 11:35:09 am
I put
Must travel
How did people go on this exam? Ughhhh only got 78/90. Made alot of mistakes...
Actually would someone mind explaining this question from Light And Matter? The assessors report didn't really explain it that well.
6. Figure 2 shows that electrons in a sodium atom can only occupy dpecific energy levels. Describe how the wave nature of electrons can explain this.
Don't get it.
Post by: Collin Li on November 11, 2008, 12:01:53 pm
6. Figure 2 shows that electrons in a sodium atom can only occupy dpecific energy levels. Describe how the wave nature of electrons can explain this.
Don't get it.
Standing waves - an integer multiple of the wavelength must equal to the circumference to avoid destructive interference, which explains these discrete energy levels.
Post by: fredbasset on November 11, 2008, 12:23:41 pm
Hahah did this question 1 hour ago, and yeah got it wrong as well.For any questions the examiners dont explain fully (which seem to be alot) just go to itute.com and check out their solutions. If you have 2008 Checkpoints you can also find your question in there and they provide in depth explanations.
I put
Must travelto enter/exit field, and is travelling at
.
How did people go on this exam? Ughhhh only got 78/90. Made alot of mistakes...
Actually would someone mind explaining this question from Light And Matter? The assessors report didn't really explain it that well.
6. Figure 2 shows that electrons in a sodium atom can only occupy dpecific energy levels. Describe how the wave nature of electrons can explain this.
Don't get it.
Post by: BiG DaN on November 11, 2008, 01:10:22 pm
Hahah did this question 1 hour ago, and yeah got it wrong as well.
I put
Must travel
How did people go on this exam? Ughhhh only got 78/90. Made alot of mistakes...
Actually would someone mind explaining this question from Light And Matter? The assessors report didn't really explain it that well.
6. Figure 2 shows that electrons in a sodium atom can only occupy dpecific energy levels. Describe how the wave nature of electrons can explain this.
Don't get it.
i got 83/90 this morning
Post by: ReVeL on November 11, 2008, 01:26:00 pm
i did this about 15 mins ago
thats the only question i got wrong lol
i got 83/90 this morning
Lol. It was only worth 4 marks.
Thanks for the help all.