An electron is placed in a uniform electric field of 4.5 104 N/C ...

[gonzo233]

An electron is placed in a uniform electric field of 4.5  104 N/C that points to the right. (e = 1.6  10-19 C, melectron = 9.11  10-31 kg)
 
  (a) What are the magnitude and direction of the force on the electron?
  (b) If the electron is released from rest, what is its speed after 3.0 ps?

Question 2

A proton moving at 5.0  104 m/s horizontally enters a region where a magnetic field of 0.12 T is present, directed vertically downward. What magnitude force acts on the proton due to this field? (e = 1.60  10-19 C)
 
  What will be an ideal response?

[Jbrasil]

Answer to Question 1

(a) 7.2  10-15 N to the left (b) 24 km/s

Answer to Question 2

9.6  10-16 N

[gonzo233]

Thank you!

[Jbrasil]

Always glad to help...