Particles q1, q2, and q3 are in a straight line. Particles q1 = -5.00 x 10-6 C,92 = +2.50 x 10-6 C, and q3 = -2.50 x 10-6 C. Particles q1 and q2 are separated by 0.500 m. Particles q2 and q3 are separated by 0.250 m. What is the net force on q2? Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

As the distance from a magnet increases, what happens to the magnet force?