The end of a horizontal rope is attatched to a prong of an electricity driven tuning fork that vibrates at 100hz. the other end passes over a pulley and supports a 2-kg mass. the linear mass of the rope is 0.75kg/m. what is the wavelength of a transverse wave on the rope?
a. 0.25m
b. 0.16m
c. 0.12m
d. 1.2m

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