Author Question: A proton (m = 1.7 1027 kg, q = +1.6 1019 C) starts from rest at point A and has a speed of 40 km/s ... (Read 89 times)

Mollykgkg · **on:** Jul 28, 2018

A proton (m = 1.7 1027 kg, q = +1.6 1019 C) starts from rest at point A and has a speed of 40 km/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VB VA.
a. +8.5 V
b. 8.5 V
c. 4.8 V
d. +4.8 V
e. 17 V

Question 2

An electron (m = 9.1 1031 kg, q = 1.6 1019 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