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Maths/Physics help

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astarmathsandphysics:
23. 300m/s - one sound goes to boy direct and the other thravels an extre 2*150m to wall and back
31. Total power =0.5 so cost =0.5*8*2=8 cents
33 Use right jhand grip rule and remeber like currents attract

azhaan:

--- Quote from: Burnside on May 23, 2010, 01:02:25 pm ---I'm not doing history so it's hard to judge. However from my experience I can make a few comments about certain subjects.

Subjects that have a large gap between SL and HL content:
Physics
Mathematics
Chemistry
Biology
All Languages

Small gap between SL and HL content:
Economics
Geography
English

Subjects that are hard conceptually:
HL maths
HL Physics

Subjects that are hard due to the sheer content you need to remember:
Economics
Biology
History
HL Chemistry (SL chem is easy)


If you do HL Physics, SL Chemistry will be a breeze due to alot of the concepts already being covered in physics.

--- End quote ---
thanks a lot you are really helpful!!
taking history HL and physics SL finally :)
hope it will help

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