Question

Bisa tlg dibantu no 47 dgn caranya?

Answer 1

B
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Answer 2

Diketahui:
Wb = 50 N
Wf = 30 N
ρ a = 1 gr/cm³ = 1000 kg/m³
g = 10 m/s²
Ditanya:
ρb = -------?
Jawab:
Fa = Wb - Wf
ρa x g x Vb = 50 - 30
1000  x 10 x Vb = 20
Vb = 0,002 m³

Wb = m x g
50 = m x 10
m = 5 kg

ρb = m/Vb
     = 5/0,002
     = 2500 kg/m³
     = 2,5 g/cm³ (E)