Magyar Information Contest Journal Articles

# Problem P. 3858. (January 2006)

P. 3858. We would like to increase the length of a 160 cm long copper rod of cross section 4 mm2 by 1 mm. What is the energy absorbed by the rod if

a) the rod is stretched;

b) the rod is heated?

(4 pont)

Deadline expired on 13 February 2006.

### Statistics:

>
 210 students sent a solution. 4 points: 109 students. 3 points: 23 students. 2 points: 44 students. 1 point: 12 students. 0 point: 6 students. Unfair, not evaluated: 16 solutions.

 Our web pages are supported by: Morgan Stanley