Author Question: Identical 8.0-mC point charges are positioned on the x axis at x = 1.0 m and released from rest ... (Read 43 times)

abern · **on:** Jul 28, 2018

Identical 8.0-mC point charges are positioned on the x axis at x = 1.0 m and released from rest simultaneously. What is the kinetic energy of either of the charges after it has moved 2.0 m?
a. 84 mJ
b. 54 mJ
c. 96 mJ
d. 63 mJ
e. 48 mJ

Question 2

A particle (q = +5.0 mC) is released from rest when it is 2.0 m from a charged particle which is held at rest. After the positively charged particle has moved 1.0 m toward the fixed particle, it has a kinetic energy of 50 mJ. What is the charge on the fixed particle?
a. -2.2 mC
b. +6.7 mC
c. -2.7 mC
d. +8.0 mC
e. -1.1 mC