Which of the following is an example of an unbalanced force?
1. A computer on a table
2 A man leaning against a wall
3 An athlete serving a volleyball
4 Fruit in a bowl

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Which situation will produce the greatest change of momentum

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants