Problem P. 4725. (April 2015)
P. 4725. The diameter of a standard table-tennis ball is 40 mm, and its mass is 2.7 grams. What is the diameter of that iron ball, which should be attached to the table-tennis ball, in order that they just float in the water?
(3 pont)
Deadline expired on May 11, 2015.
Statistics:
68 students sent a solution. 3 points: 55 students. 2 points: 6 students. 1 point: 6 students. 0 point: 1 student.
Problems in Physics of KöMaL, April 2015