A particle with a charge of –1.2 nC (nano-coulomb, or 10-9C) is located at a distance of 2.3 cm from a particle with charge of 2.8 nC (2.8 × 10-9 C). The first particle is released from rest. The second particle is fixed at its location. What is the change in electric potential energy when the first particle has moved 1.0 cm?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s