Lab Quiz LS30A F19 with correct answers

Lab Quiz LS30A F19 1. The simulation script below simulates the model for the spring with friction, with state variables X and V. In the table below explain what each line of code does. The lines are numbered for your convenience. The explanation for the first line is given as an example. 1 t = srange(0,100,0.1) 2 var('X,V') 3 sol= desolve_odeint([V,-X - 0.1*V],ics=[100,20],dvars=[X,V],times=t) 4 list_plot(zip(t,sol), color='red', plotjoined = True) Line Your Explanation 1 creates a list called t that goes from 0 to 99.9 by steps of 0.1 2 3 4 2. Which option shows the contents of the list mylist after the code below is run: mylist=[0,0.1,3] a=1 b=a+2 a=mylist[2] d(b) mylist[0]=a a) [0,0.1,3,5] b) [0,0.1,3,3] c) [1,3,3] d) [1,0.1,3,3] e) [3,0.1,3,3] Your answer: ______ 1 3. Which of the following options is correct about the piece of code that follows times = srange(0,3,.5) values = [] for t in times: y=t*2 d(y) a) the for loop will run a total of 3 times