Qualification > Sciences
paper 1 physics HERE ONLY~!!!!!!!
winnie101:
m/j 2005, q21, isnt it supposed to be refraction, D not A diffraction thats what it says in my book
plz help!
nid404:
--- Quote from: winnie101 on June 09, 2009, 02:29:29 pm ---m/j 2005, q21, isnt it supposed to be refraction, D not A diffraction thats what it says in my book
plz help!
--- End quote ---
refration occurs when speed and wavelength of the waves change..there is nothing of that sort happening. When circular wavelets form it is duffraction(in this case thru a wide gap)
solo_G:
ppl there is smthn dat i dnt get june 1999 question 34???can any1 help i cnt really c da difference between da bells??
cool_dude:
who can explain to me this easy question...nov/04...30..
nid404:
--- 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
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