IPA Kelas:8
Mohon di jawab no. 1-2.
Mohon di jawab no. 1-2.
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b. A = 2cm
c. T = t/n = 2,25/1,5 = 1,5 sec
d. ʎ = s/n = 30÷1,5 = 20cm
e. v = ʎ÷T = 20 ÷ 1,5 = 1,33cm/sec
f. f = n/t = 1,5/2,25 = 0,67hz
2mnt = 120sec
n 2mnt = 0,67×120
n 2mnt = 80,4