Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    Hi guys. I dont really understand the answer given in the mark scheme . Can anyone please try and explain it to me ? Unit 1 G481 OCR : 2(b) and Unit 2 G482 : 2(v) and 3 (b) (i) -> Why is the area 4d^2 and to get the number density of free electrons, why is it 1/d^3. Thank you so much
    Attached Images
       
    • Thread Starter
    Offline

    0
    ReputationRep:
    and the others..
    Attached Images
         
    Offline

    3
    ReputationRep:
    Name:  grt.png
Views: 114
Size:  27.8 KB
    dont do unit 2 , hope it helps 2a unit 1
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: May 9, 2015

1,016

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should universities take a stronger line on drugs?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.