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t = 20 s
λ = 1,5 m
a. T = t/n
T = 20/10
T = 2 s
b. f = n/t
f = 10/20
f = 1/2 Hz
c. v = λ.f
v = 1,5.1/2
v = 0,75 m/s
n = 10
t = 20
λ = 1,5 m
ditanya =
a). T = ...
b). f = ...
c). v = ...
dijawab =
a). T = t / n
= 20 s / 10
= 2 s
b). f = n / t
= 10 / 20 s
= 0,5 Hz
c). v = λ . f
= 1,5 m . 0,5 Hz
= 0,75 m/s
= 75 cm/s