PhysicsLAB Amusing Problems
The Cycle Shop

Printer Friendly Version
 
In this shocking episode, Dr. J and his crew invest in a new part-time business. With the high price of gasoline, many of the rental car companies have started renting motorcycles. Of course the leader in this field is Hertz (after all, a cycle per second is a fantastic rate of business). On the other hand, Avis and some of the other companies have shown a resistance to this current trend because of their concern over the potential business. Dr. J decides to go one step further and rent electric motorcycles. It seems like a natural: J. Jr. will handle the renting; Timex will serve as the mechanic (his specialty is timing engines); and even Tripod can show first-time customers how to keep their balance. Dr. J designs these electric motorcycles himself. The only drawback to them is the speed. Whereas a gas-guzzling Harley can reach 70 MPH and over, Dr. J's model can only reach 7 MPH (he names it a Hardly). A problem arises while assembling the first of these cycles. There are three 10-ohm resistors left, but the circuit diagram showing the proper way to wire them is blurred. After thinking a bit, Timex says, "How many ways can you do this, anyway?" Dr. J says that there are seven different combinations. (Not every combination need use all three resistors.)
 
Find the total resistance for each of these seven combinations.

View Correct Answer



 
Related Documents




Walch Publishing
Copyright © 1985-2017
All rights reserved.
Used with
permission.
PhysicsLAB
HTML conversion
Copyright © 1998-2017
Catharine H. Colwell
All rights reserved.
Mainland High School
Daytona Beach, FL 32114