Wavelength - the distance from one wave crest or trough to another wave crest or trough. Amplitude - the distance from the median point or "middle" of the wave straight up to a crest (a maximum) or straight down to a trough (or minimum), which is the peak amplitude; or the distance from a trough straight up to a crest, or a crest straight down to a trough, called peak-to-peak amplitude.
Decrease the amount of work done.
Acceleration is the rate of change of velocity per unit of time.
Decreasing the amount of current flowing through the circuit by using a 5 volt battery instead of a 10 volt battery.
