Qualification > Sciences
paper 1 physics HERE ONLY~!!!!!!!
unknown 101:
--- Quote from: cool_dude on June 09, 2009, 02:37:19 pm ---who can explain to me this easy question...nov/04...30..
--- End quote ---
this is because in this question the current splits to go through the 2 resistors ( so each one gets 1 Amp)
but when the current combines again, it goes back to the normal reading which is 2 amps
astarmathsandphysics:
--- 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
cool_dude:
--- Quote from: nid404 on June 09, 2009, 02:38:54 pm ---
--- Quote from: Guthixol on June 09, 2009, 01:37:08 pm ---someone explain to me q3 may/june 2008
Thank You:D
--- End quote ---
average speed=total distance/total time
total distance-25x3=75km
time=0.5hrs
therefore speed=75x2=150km/hr
--- End quote ---
why 75 x 2??..
it should be 75/0.5....
nid404:
@cool dude: 75/0.5=75/1/2
and 75 divided by 1/2 is 75x2
unknown 101:
i have a question in june 2007, q22 , how the hell would i know that the angle of incidence at mirror Y is 60° ?
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