Question
note: E is for exponetial
two large horizontal, parallel metal plates are 2.5cm apart in air and the upper is maintained at a positive potential relative to the lower so that the field strenght between them is 2.1x10E3vmE-1
the potential difference between plates is 5.25x10E-1volts
Ques: If an electron of charge 1.8x10E-19C and mass 9.8x10E-31kg is liberated from rest at lower plate. find its speed on reaching the upper plate.
i got 4.3x10ms as answer
pls never sure if am right with this answer getting tough time with it.
two large horizontal, parallel metal plates are 2.5cm apart in air and the upper is maintained at a positive potential relative to the lower so that the field strenght between them is 2.1x10E3vmE-1
the potential difference between plates is 5.25x10E-1volts
Ques: If an electron of charge 1.8x10E-19C and mass 9.8x10E-31kg is liberated from rest at lower plate. find its speed on reaching the upper plate.
i got 4.3x10ms as answer
pls never sure if am right with this answer getting tough time with it.
Answers
bobpursley
The energy the electron receives is Vq, or 5.25E-1*1.6E-19 joules, and that is equal to 1/2 m v^2
v=sqrt 2(energy)/9,8E-31
I don't get your answer.
v=sqrt 2(energy)/9,8E-31
I don't get your answer.
Joseph
8.57*10^-31