Newer automobiles have filters that remove fine particles from exhaust gases. Th
ID: 1650442 • Letter: N
Question
Newer automobiles have filters that remove fine particles from exhaust gases. This is done by charging the particles and separating them with a strong electric field. Consider a positively charged particle +2.7 mu C that enters an electric field with strength 2 times 10^6 N /C. The particle is traveling at 15 m/s and has a mass of 10^-9 g. What is the acceleration of the particle? (Enter the magnitude only.) ______ m/s^2 What is the direction of the acceleration of the particle relative to the electric field? It is in the same direction as the electric field. It is 90 degree to the left of the electric field. It is 90 degree to the right of the electric field. It is in the opposite direction of the electric field.Explanation / Answer
Electric force, F = q E
a = q E / m
a = (2.7 x 10^-6) (2 x 10^6 ) / (10^-9 x 10^-3 kg)
a = 5.4 x 10^12 m/s^2 ............Ans
Direction: q is positive,
so It is in the same direction as the electric field.