Problem P. 3963. (March 2007)
P. 3963. Find the mass of the object which is to be raised to a height of 1 metre such that the change in its energy is the same as the absorbed energy when 1 litre of water is heated by .
(3 pont)
Deadline expired on April 11, 2007.
Statistics:
180 students sent a solution.  
3 points:  146 students. 
1 point:  14 students. 
0 point:  1 student. 
Unfair, not evaluated:  18 solutions. 
Unfair, not evaluated:  1 solution. 
