help = brainlist please


(a) Waves P and Q have the same frequency, but wave P has twice the wavelength of wave Q
(b) Waves Q and R have the same wavelength, but wave R has twice the frequency of wave Q.
(c) Wave T shows a steady frequency but changing amplitude
(d) Wave S shows a steady amplitude but changing frequency
(e) Waves Q and R have a low amplitude and a steady frequency
HOPE THESE ARE RIGHT