An oscillator completes 20 cycles during 5.0 seconds. 1. What is its frequency? 2. What is its period of oscillation? 3. Are the frequency and period independent quantities? A. 20Hz, 5s, no. B. 100Hz, 5s, yes. C. 4.0Hz, 0.25s, yes. D. 20Hz, 5s, yes. OC OA OB ODThe mass connected to two horizontal springs is pulled to the right and released. The instant after it is released, which of the following free body diagrams correctly identifies the forces acting on the cart? (a) (b) (c) (d) (e) None of these Ob O a Od De OCA particle which can move along the x-axis only, is initially at equilibrium at the origin. When displaced from the origin, the particle experiences a restoring force proportional to the displacement from the origin. Which of these equations represents this situation? (in these equations, k is a positive constant) X O A) F = -kx B) F = -k OF = x-k D) F =-x+k E) None of these. O A OC OB OD OEWhen a person pulls a bungee cord using a force of 50 N, the cord stretches by 5 cm compared to its unstretched length. What is the spring constant of the cord? A. 1000 N B. 2000 N C. 500 N D. No enough info to determine. OD OC OA OB Question 5 A mass on a spring in SHM has 1) 0 amplitude A and period T. What is b) A/2 the total distance traveled by the C) A mass after a time interval T? d) 2A @) 4A m Ob O a Od Oe OCA skater builds what he calls a "double halfpipe", shaped as shown in the diagram. He starts from the left side of the double halfpipe. Which of the following best represents how his kinetic energy depends on position? X Ob Od O a OC