{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Exam3Tutsol

# Exam3Tutsol - Name Student ID Score last first V[20 points...

This preview shows page 1. Sign up to view the full content.

Name ___________________________________ Student ID _______________ Score ______ _____ last first Physics 123A, Spring 2008 Exam 3 WO-UWA123A082T-E3(PCQ)sol2.doc V. [20 points total] A ball moves back and forth forever on a frictionless track consisting of two horizontal sections, shown at right (not to scale). Assume that the ball has enough kinetic energy to get from region B to region A, and that the time the ball spends on the steep sections of the track is negligible. The exact heights and lengths of the two regions are unknown, except that region B is lower and longer than region A. A. [5 pts] Is the probability density in region A, ± A , greater than , less than, or equal to the probability density in region B, ± B ? Explain. If not enough information is given, explain what additional information is needed. The probability density in a given region is the time per unit length the ball spends in that region divided by the time it takes to traverse the entire track. Since region A is higher than region B, the
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