sheet. For problems 1 through zo, fill in the corresponding bubble on the scantr

Question

sheet. For problems 1 through zo, fill in the corresponding bubble on the scantron For questions 1-2, refer to the following graph, which shows the displacement vs time for a spring oscillator.: -5 Problem 1 (5.00 pts): What is the frequency of this oscillator? 0.5 Hz 3.14 Hz C) 1.0 Hz D) 2.0 Hz E) 5.0 Hz Problem 2 (5.00 pts): What is the maximum speed of this oscillator? A) 0.025 m/s B) 0.157 m/'s C) 2.5 m/s D 0.05 m/s E) 0.315 m/s For questions 3-4, refer to the following image of the Lennard-Jones potential tween interacting atoms.:

Explanation / Answer

1st graph questions:

1)

Period T = time to complete one oscillation

= 2s (from the graph)

So,

frequency f = 1/T = 1/2 = 0.5 Hz (option A)



2)

First calculate the wavelength:

w = peak-to-peak = 5 + 5 = 10cm = 0.10m



We know,

v = fw

= (0.5)(0.1)

= 0.05 m/s (option D)

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