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Physics: Post your doubts here!

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View attachment 59394
View attachment 59395
So yes, electric field strength is a vector quantity ... But are the directions opposite coz the field lines will go INTO both the alpha particle and the proton?

And this ...
force per unit charge M1
on either a stationary charge
or a positive charge

Should we write either of the two .. or should we write 'either a stationary charge or a positive charge'?? :p
Since it's a vector quantity and both charges are +ve the field at P due to the 2 particles are in opposite directions so the opp. signs
 
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I am so dumb :/
can u please show the steps :(
So if u take that red box ie 5*5 sqaure the wd for that one box is E*d which is approx 2.5x10^3*1x10^-2 (we'll call this answer as Z ... I'm too lazy to work out the ans :p )
Now count approximately how many of these 5*5 boxes will fit under the curve. This will be say n boxes
So then multiply Z*n to get the total wd
 
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