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P. 3825. By what amount does the area of a 20-Forint coin increase, if its diameter at 20 oC is 26.3 mm, and in our pocket its temperature increases to 35 oC. (The coefficient of linear expansion is =1.84.10-5 oC-1.)

(3 points)

Deadline expired on 11 November 2005.

Statistics on problem P. 3825.
 360 students sent a solution. 3 points: 259 students. 2 points: 55 students. 1 point: 23 students. 0 point: 2 students. Unfair, not evaluated: 21 solutions.

• Problems in Physics of KöMaL, October 2005

•  Támogatóink: Morgan Stanley