Can we say that the disturbance in a wave is caused by energy gained at one point in the system? Then it's that energy which propagates through the wave causing a disturbance?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates