Question

Efectuati transformarile unitatilor de masura.
10 m/s.........km/h
72 km/h........m/s
1 g/cm cub.......kg/m cub
1200 kg/m cub........g/cm cub

Answer 1

10 m/s.........km/h :

1 m = 0,001 km

1 s = 1/3600 h = 0,000278

=> 10x0,001 / 0,000278 = 36 km/h

72 km/h........m/s :

1 km = 1000 m

1 h = 3600 s

=> 72x1000/3600 = 20 m/s

1 g/cm cub.......kg/m cub

1 g = 0,001 kg

1 cm3 = 1.0×10^-6

=> 0,001/10^-6 = 1000 kg/m3

1200 kg/m cub........g/cm cub

1 kg = 1000 g

1 m3 = 1000000 cm3

=> 1200x1000/1000000 = 1,2 g/cm3