Page 43 - SP015 Past Years PSPM Chapter 6 -14 Ver 2020

PSPM SP015

PSPM 2003/2004 SF017/2 No. 12(b)

10. Show that the equation for a progressive wave y = A sin (kx –  t) can be written in the

 x t 
form of  Ay sin 2      . [2 m]
  T 

PSPM 2003/2004 SF017/2 No. 12(c)

-1
11. A progressive wave with velocity 300 m s , frequency 600 Hz, and amplitude 20 cm is
propagating from left to right.

(a) Calculate the wavelength of the wave. [2 m]

(b) Write a wave equation for the wave. [4 m]

PSPM 2005/2006 SF017/2 No. 12(a)

12. Explain

(a) the speed of propagation of wave. [1 m]

(b) the vibrational speed of a particle. [1 m]

PSPM 2006/2007 SF017/2 No. 5

13. (a) What is meant by wave propagation velocity? [1 m]

(b) A transverse wave produced in a string is described by the expression,

y = 0.002 sin (30x – 2ft)

where y and x are in meter and t is in second. If the wave travels at a speed of
-1
30 m s , calculate its frequency. [3 m]

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