Question

O sfera cu diametrul =10 cm
Este confectionata din sticla.Sa se determine volumul,masa si greutatatea sferei(g=10N/Kg)

Answer 1

D=10 cm=0,1 m

ρ=2500 kg/m³

r=D/2=0,1/2=0,05 m

V=4πr³/3=4π*0,05³/3=0,0005π/3=0,00016π m³

ρ=m/V=>m=ρV=2500*0,00016π=1,3 kg

G=mg=1,3*10=13 N