The Student Room Group

Issac Physics H1.3

How big a field do you need to cause a +3.2x10^-19C alpha particle to experience a 2.00N force?

My working:

E = F/Q
E = 2.0/3.2x10^-19

= 6.25x10^18 but issac says its wrong, why?
Look at the significant figures given in the question
Original post by happyapple5
Look at the significant figures given in the question

I put 6.2x10^18 but still giving me it as wrong
Have another try
as your answer should be to 2sf
so look at the 3rd digit to determine if you need to keep or raise the 2nd
oh oops not sure why i put 6.2, i meant 6.3 sorry lol. silly mistake to make haha, its right now thanks

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