Ahome gets its water from the public supply. which of the following would be the best way for the homeowner to obtain a water-quality report? a. purchase a home sampling kit on the internet b. record observations made by smelling and tasting the tap water c. request data from the local water treatment facility d. ask neighbors for a sample of their water to compare

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