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A1*V1=A2*V2
6*2=2*X
X=6 M/S
= 6 x 10 pangkat -2 m
d2 = 2 cm
= 2 x 10 pangkat -1 m
v1 = 2 m/s
D2. v2 . . . ?
D3. A1 . v1 = A2 . v2
1/4πd² . v1 = 1/4 πd² . v2
1/4 3,14 (6 x 10 pangkat -2)² . 2 = 1/4 3,14 (2 x 10 pangkat -2)² . v2
1/4 . 3,14 . 36 x 10 pangkat -4 . 2 = 1/4 . 3,14 . 4 x 10 pangkat -4 . v2
5652 x 10 pangkat -6 = 314 x 10 pangkat -6 v2
v2 = 5652 x 10 pangkat -6/314 x 10 pangkat -6
= 18 m/s