December 2018 1 140 Report
1. Całkowita energia mechaniczna ptaka o masie 3 kg lecącego z szybkością 108km/h na wysokości 1, 75 km nad ziemią wynosi..:

2. Energia 2kWh to tyle samo co:
a) 2KJ
b) 120kJ
c) 7,2 MJ
d) 7,2 kJ



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