Qualification > Sciences
physics
halosh92:
--- Quote from: Nobody on May 03, 2010, 08:26:45 am ---
1) A beta particle is deflected more that an alpha particle in an electric field. This is because a beta particle ( a high energy, fast moving electrons) is much smaller and lighter than an alpha particle( a helium atom).
2) Alpha particles are strongly ionising but can be stopped by paper or skin.Because they have a strong positive charge (+2) and a mass of 4 (i.e. 4 times the mass of a proton)
and yes....all three radiations are originated from nucleus of the atom.
--- End quote ---
thankyou ;D
ruby92:
--- Quote from: ruby92 on May 02, 2010, 08:36:40 pm ---o/n 2008 paper 2 physics
a i in the ms the take s=12.8.
but it says the speed of the car before brakes are applied ??? ???
also isnt u=v (the speed with which the car is travelling) and v=0???
for the ii part why cant we use one of the formulas for acceleration?
this is from paper 2 CIE physics
i would really appreciate is someone would draw this graphs and post them here
M/j 2004 2 b
I need this ASAP
--- End quote ---
AN10:
plz explain mcq 27 of the paper attached.
Nobody:
--- Quote from: AN10 on May 03, 2010, 12:50:39 pm ---plz explain mcq 27 of the paper attached.
--- End quote ---
answer is c
AN10:
ya i know but y C ???
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