Question

Observe the graphic representation of a wave motion given below.

(a) What is the amplitude of the wave? 

(b) What is the wavelength? 

(c) Calculate the frequency of the wave if it took 0.2s to reach A. 

(d) Calculate the speed of the wave

Answer 1

(a) 2 cm

(b) 8 m

(c) Frequency, f = \(\frac{n}{t}\)

\(=\frac{3}{0.2}=\frac{30}{2}=15\) Hz

(d) V = fλ = 15 x 8 = 120 m/s