tolong jawab kan ya ka

1.
Dik:
massa benda= 10 kg
massa jenis benda = 5 gram/cm³ = 5000 kg/m³
massa jenis air = 1 gram/cm³ = 1000 kg/m³
percepatan gravitasi = 10 m/s²

Dit: F= ..?
Jawab:
ρ = m / v
5000 = 10 / v
5000v = 10
v = 10 / 5000 = 0,002 m³

F = ρ . g . V
F = 1000 × 10 × 0,002
F = 20 N (A)

2.)
C. 2 dan 3