Qualification > Sciences
paper 1 physics HERE ONLY~!!!!!!!
unknown 101:
--- Quote from: nid404 on June 09, 2009, 02:48:57 pm ---
--- Quote from: LilWayne on June 09, 2009, 02:46:28 pm ---i have a question in june 2007, q22 , how the hell would i know that the angle of incidence at mirror Y is 60° ?
--- End quote ---
90-30=60
this should tell u
angle of incidence is the angle between the normal and the incident ray.
--- End quote ---
ayt Thanks nid404
and Thanks cool dude
solo_G:
--- Quote from: astarmathsandphysics on June 09, 2009, 02:43:33 pm ---
--- Quote from: mena mustafa on June 09, 2009, 02:36:03 pm ---ppl there is smthn dat i dnt get june 1999 question 34???can any1 help i cnt really c da difference between da bells??
--- End quote ---
a magnetism is induced in the arm when a current passes and the arm is attracted to the electromagnet so the bell rings
then the circuit is shorted so nu current flows in the magnet and the arm is released and the whole thing happens again
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man i still dnt get it i mean y cnt it b C OR D???anywayzz Thanks 4 da help
cool_dude:
= lilwyne, no problemo..
hurmm...another quest is..how do we know which fuse can we use..? nov/04..34
Ghost Of Highbury:
--- Quote from: cool_dude on June 09, 2009, 02:57:57 pm ---= lilwyne, no problemo..
hurmm...another quest is..how do we know which fuse can we use..? nov/04..34
--- End quote ---
( november 2004, paper 1, question 34 )
B - the 3 A one
its not 50 A or 10 A because it wil be able to take the current of the mains and lead respectively...and probably affect the hair dryer
u cant put a 1A fuse too because the device needs 2A...
therefore B -- 3A
unknown 101:
--- Quote from: cool_dude on June 09, 2009, 02:57:57 pm ---= lilwyne, no problemo..
hurmm...another quest is..how do we know which fuse can we use..? nov/04..34
--- End quote ---
it says the hair dryer takes 2amps, and the lead can carry 5amps
so it cant be blow 2amps cuz then the fuse would blow and hair dryer wont work, and it cant be above 5amps, cuz the hairdryer might get messed up
so it has to be between 2-5, and thonly answer there which is between 2-5 is 3amp fuse
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