Question

transformati: V1=124 km/h=?(m/s)
V2=36 m/s=?(km/h)
ro1=8,9 g/cm cubi=?(kg/m cub)
ro2=3200 kg/m cubi=?(g/cm cub)
A1=12723 ha=?(dam patrati)
A2=52211m patrati=?(dm patrati)
l=dm cubi
V1=57cm cubi=?(l)
V2=1773 cl=?(dm cubi)
rezolvare completa!

Answer 1

$v_{1} =124 \frac{km}{h}=14* \frac{1000m}{3600s}=34,44 \frac{m}{s} \\ v_{2}=36 \frac{m}{s}=36* \frac{ \frac{1}{1000}km }{ \frac{1}{3600}h } =129.6 \frac{km}{h} \\ Ro_{1}=8,9 \frac{g}{ cm^{3} }=8,9* \frac{ \frac{1}{1000}kg }{ \frac{1}{1000000} m^{3} } =8900 \frac{kg}{ m^{3} } \\ Ro_{2}=3200 \frac{kg}{ m^{3} }=3200* \frac{1000g}{1000000 cm^{3} } =3,2 \frac{g}{ cm^{3} } \\ A_{1}=12723ha=1,2723 m^{2} =0,012723 dam^{2} \\ A_{2} =52211 m^{2}=5221100 dm^{2} \\ 1l=1 dm^{3}$
$V_{1}=57 cm^{3}=0,057 dm^{3}=0,057l \\ V_{2} =1773cl=17,73l=17,73 dm^{3}$