Turn on thread page Beta

Edexcel A level Physics unit 5 multiple choice question -> Help? watch

    • Thread Starter
    Offline

    21
    ReputationRep:
    Could someone explain the reasoning behind why the answer is "D" :erm: :hmmmm2: and not what I wrote. :puppyeyes:

    http://i.imgur.com/wnqtvtJ.png
    Offline

    22
    ReputationRep:
    (Original post by XxKingSniprxX)
    Could someone explain the reasoning behind why the answer is "D" :erm: :hmmmm2: and not what I wrote. :puppyeyes:

    http://i.imgur.com/wnqtvtJ.png
    I haven't covered U5 yet, but from GCSE: P \propto T^4, so the increase in temperature increases the rate of emission by a factor of \frac{330^4}{300^4}
    Online

    20
    ReputationRep:
    (Original post by Zacken)
    I haven't covered U5 yet, but from GCSE: P \propto T^4, so the increase in temperature increases the rate of emission by a factor of \frac{330^4}{300^4}
    gcse?

    ---

    anyway less than 1 i.e. 0.9 would be a reduction in the amount of radiation - which should have set some alarm bells off tbh.
    Offline

    22
    ReputationRep:
    (Original post by Joinedup)
    gcse?
    Crazy international boards. CIE.
 
 
 
Poll
A-level students - how do you feel about your results?

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.