Q3: Amplitude and period in SHM A block attached to a spring oscillates in simple harmonic motion along the 3 axis. The limits of its motion are x = 10 cm and r = 50 cm and it goes from one of these extremes to the other in 0.25 s. Its amplitude and frequency are: A. 40 cm, 2 HZ B 20 cm, 4 HZ C. 40 cm, 2 Hz D. 25 cm. 4 Hz E 20 cm, 2 Hz ОА B Ос D E

Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.