Mathematical and Physical Journal
for High Schools
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# Problem P. 4775. (November 2015)

P. 4775. Thin copper and iron strips are riveted together along their length to form a bimetallic strip. The distance between the two strips is 1 mm. The bimetallic strip is flat at the temperature of $\displaystyle 0\;{}^\circ$C. What will the radius of the bent strip be at a temperature of $\displaystyle 200\;{}^\circ$C?

(4 pont)

Deadline expired on December 10, 2015.

### Statistics:

 106 students sent a solution. 4 points: 77 students. 3 points: 19 students. 2 points: 5 students. 1 point: 3 students. 0 point: 1 student. Unfair, not evaluated: 1 solution.

Problems in Physics of KöMaL, November 2015