Lwriting in science
4. assess a driver followed a van with a
surfboard strapped on top. the driver claims
that the van stopped so quickly that the
surfboard flew backward, hitting his car and
causing damage. he wants the driver of the
van to pay for damage to his vehicle and
medical costs. you are the judge in the case.
use newton's laws of motion to write a
judgment in the case. write your response in
your science journal lafs.6.sl.1.3, sc.6.p.13.3

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