Rozwiąż.
15metrów/minutę = metrów/sekundę.
15kg/m3 = g/cm3
15m/min=15m/60s=0,4m/s
15kg/m3=15 10000g/cm3=0,015g/m3
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15m/min=15m/60s=0,4m/s
15kg/m3=15 10000g/cm3=0,015g/m3