Final Exam & Solutions

# Final Exam & Solutions - Phys 116 Final 9:00-11:30 am...

• Homework Help
• 10
• 100% (2) 2 out of 2 people found this document helpful

This preview shows pages 1–2. Sign up to view the full content.

1 Phys. 116 Final 9:00-11:30 am, Dec. 16, 2003 1. (5 points) In one inertial reference frame, event A and event B occur at the same position, with A preceding B in time. Will A precede B in all other inertial reference frames? Explain. 2. (5 points. Dedicated to people with manual-transmission cars) Consider two disks, rotating about a common axis, with moments of inertia I 1 and I 2 . Initially they have rotational velocities ϖ 1 and ϖ 2 . Suppose that they are not subject to any external torques. A driver then brings the two disks into contact, and they stick together. Find the final angular velocity of the combined system. 3. (5 points) A mass on a spring is released from rest with amplitude x 0 . Because of viscous frictional forces, the mass does not return to its original position after one oscillation period. Rather, its maximum displacement is reduced by a distance x , where x << x 0 . Determine the quality factor of this oscillator using the definition Q = energy stored energy dissipated per radian . 4. (5 points) A cart moves on a track with a constant relativistic velocity v. A and B are observers at the two ends of the cart, and C and D are stationed along the track. We define event AC as the occurrence of A passing C, and event BD as B passing D. Suppose that events AC and BD are simultaneous in the cart’s reference frame. Are they simultaneous in the track’s reference frame? If not, which event is earlier in the track’s frame?

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern