A charge Q1 = 24C is at rest and is located 3 cm away from another fixed charge Q2 = 6 u C. The first charge is then released. Calculate the kinetic energy of charge Q1 when it is 7 cm away
from charge q2

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600