Author Question: A particle (q = +5.0 C) is released from rest when it is 2.0 m from a charged particle which is held ... (Read 116 times)

asan beg · **on:** Jul 28, 2018

A particle (q = +5.0 C) 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 C
b. +6.7 C
c. 2.7 C
d. +8.0 C
e. 1.1 C

Question 2

Two particles, each having a mass of 3.0 g and having equal but opposite charges of magnitude of 6.0 nC, are released simultaneously from rest when they are a very large distance apart. What distance separates the two at the instant when each has a speed of 5.0 m/s?
a. 4.3 mm
b. 8.6 mm
c. 7.3 mm
d. 5.6 mm
e. 2.2 mm