Mathematical and Physical Journal
for High Schools
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Problem P. 4754. (September 2015)

P. 4754. 4 litres of water at a temperature of \(\displaystyle 30\,^\circ\)C is poured into a copper hemisphere shaped container of volume \(\displaystyle 4~{\rm dm}^3\). The temperature of water decreases by \(\displaystyle 3\,^\circ\)C, whilst the temperature of the container increases by \(\displaystyle 27\,^\circ\)C. What is the width of the wall of the container?

(4 pont)

Deadline expired on October 12, 2015.


150 students sent a solution.
4 points:107 students.
3 points:32 students.
2 points:8 students.
1 point:2 students.
0 point:1 student.

Problems in Physics of KöMaL, September 2015