Which diagram (A or B) shows transmission?

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane