Question

Indique o volume: 2 kg de chumbo ( densidade = 11,3 g/cm) e 2 kg de alumínio (densidade = 2,7 g/cm ) Efetue os cálculos.

Answer 1

Formula

a)

$d = \frac{m}{v}$

$11.3 = \frac{2}{t}$

2kg=======> 2000g

$11.3 = \frac{2000}{v}$

Meios Pelos extremos

$11.3v = 2000 \\ v = 176.99$

Volume =~ 176,99g/cm3

b)

$2.7 = \frac{2000}{v}$

Meios Pelos Extremos

$2.7v = 2000 \\ v = 740.74$

Volume =~ 740.74g/cm3

Answer 2

chumbo                                          alumínio
d= 11,3 g/cm3                           d= 2,7 g/cm3
m= 2000g                                  m= 2000 g
v =?                                            v=?

d= m                                           d= m
    -----                                            ------
     v                                                  v
    -----
     v
11,3g/cm3=   2000g                 2,7g/cm3= 2000
                   ------------                                ----------
                         v                                           v
11,3 v= 2000                            2,7 v = 2000
v= 2000/11,3                             v= 2000/2,7
v=177cm3                                 v= 741 cm3