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Rumusnya :
F1/A1 = F2/A2
120/30 = F2/150
F2 = 120 x 150 : 30
F2 = 600 N (D)
21.
Rumusnya =
Ph = pgh
Ph = 1000.10.0,1
Ph = 1000 N/m³ (C)
km = s/h = 2,4 / 1,2 = 2
ket. s = panjang lintasan
h = tinggi
jawaban b
maaf kalo' salah