1-3) A 1500-kg car travels at a constant speed of22 m/s around a circular track
that has a radius of 85 m.
1) What is the magnitude ofthe acceleration (in m/s2) ofthe car?
2) What is the magnitude of the average velocity (i
Show all your work. Partial credit will be given if earned. Write your answers in the blanks
(8pts) 1. When a rock is suspended from a string in air, the tension in the string is 49.0
N. When the rock is lowered into water until it is totally su
Class Notes Sep23th: Closed System Problems
Guidelines for doing problems involving energy balances on closed
1) Draw diagram of the system and dene the system boundary
° This sometimes depends on what the problem asks for
As an introduction to the rest of the semester, Professor Kozhanov was the first
instructor to visit our class and tell us about his field of study: Magnetic Nanostructures.
I thought it was a good way to begin the course be