" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
dari A ke B itu 3/4 gelombang , jadi
λ = 30 cm : 3/4 = 30 cm x 4/3 = 40 cm
T= 4 sekon
v = λ/T = 40cm/4sekon = 10 cm/s (c)