The amplitude of a compressional wave depends on the

a.) density of material in compressions and rarefactions
b.) distance between crests and troughs
c.) number of wavelengths that pass by a point each second
d.) vibration of electric and magnetic parts

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Often called simply "velocity," this is the velocity of an object at a particular moment in time.