Question

ex 3 .
clasa a 7 a .

Vă rog repede . ​

Answer 1

Răspuns:

p=2,7g/cm^3= 2700kg/m^3

g=10N/kg

a=10cm=0,1m

G=?

G=m*g

m=p*V

V=a^3=(0,1)^3

V=0,001m^3

m=2700kg/m^3*0,001m^3

m=2,7kg

G=2,7kg*10N/kg

G=27N