An electron (m = 9.1 10-31 kg, q = -1.6 10-19 C) starts from ...

[ETearle]

An electron (m = 9.1  10-31 kg, q = -1.6  10-19 C) starts from rest at point A and has a speed of 5.0  106 m/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VA - VB.
 a. -71 V
  b. +71 V
  c. -26 V
  d. +26 V
  e. -140 V

Question 2

What is the speed of a proton that has been accelerated from rest through a potential difference of 4.0 kV?
 a. 1.1  106 m/s
  b. 9.8  105 m/s
  c. 8.8  105 m/s
  d. 1.2  106 m/s
  e. 6.2  105 m/s

[tofugiraffe]

Answer to Question 1

A

Answer to Question 2

C

[ETearle]

Gracias!

[kalskdjl1212]

Thanks for the timely response, appreciate it