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(1,38 * 10^5 kg)/ (2* 10^-3 kg=0,69 * 10^8) czyli 69000000 kolibrów
16) a) (2*10^14)/(10^7)= 2* 10^7
b) (6* 10^8)/2500= (6*10^8)/(2,5*10^3)=2,4* 10^5