help ano po to hindi ko po ma gets pliss help

Answer:
frequency= 1.5
period = 0.667
wave speed = 0.75
Explanation:
f = N cycle/t
f = 15 /10 = 1.5
p = 1/f
p = 1/ 1.5 = 0.666666667
ws = f×wl
ws = 1.5 (0.5) = 0.75