Question

Ma ajutati la 21 va rog(rezolvarea o doresc)

Answer 1

10 cm = 0,1 m

5 cm= 0,05 m

2 cm=0,02 m

a)

$V=0,1*0,05*0,02=0,0001 m^{3}$

$p =\frac{m}{V}=> m_{Fe} =7869*0,0001=0,786kg \\\\m_{2} =1,676-0,786=0,89kg$

b)

$p=\frac{m_{2}}{V} =\frac{0,89}{0,0001} =8900kg/m^{3}$

p - reprezinta desitatea