Which list includes all the steps of a descriptive investigation?
A. Asking questions, making observations, collecting data,
comparing, and forming a conclusion
B. Asking questions, making observations, experimenting, analyzing
data, and forming a conclusion
O C. Asking questions, making observations, collecting data, and
forming a conclusion
D. Asking questions, making observations, and overcoming
limitations

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